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Preview: HP Labs Technical Reports

HP Labs Technical Reports



Listing of recent published HP Labs Technical Reports



Published: Wed, 24 Sep 2014 16:10:01 PDT

Last Build Date: Wed, 24 Sep 2014 16:10:01 PDT

Copyright: 2014 Hewlett-Packard Development Company, L.P.
 



Embedded Scanning, Encryption and Certification Workflows on Multi-Function Printers (MFPs)

Wed, 24 Sep 2014 16:10:01 PDT

HPL-2014-27 Embedded Scanning, Encryption and Certification Workflows on Multi-Function Printers (MFPs) - Balinsky, Helen; Mohammad, Nassir
Keyword(s): multi-function printers; publicly posted composite document; secure solution; secure scan; workflow streamlining
Abstract: A recently proposed document format: Publicly Posted Composite Documents (PPCDs) [1] has been developed to tackle both the containment and security aspects of composite documents participating in inter-organizational workflows. Here, the access control and authentication material together with the a ...
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The Rheology of Dense Colloidal Pastes Used in 3D-Printing

Wed, 24 Sep 2014 16:10:01 PDT

HPL-2014-29 The Rheology of Dense Colloidal Pastes Used in 3D-Printing - Avery, Michael P.; Klein, Susanne; Richardson, Robert; Bartlett, Paul; Adams, Guy; Dickin, Fraser; Simske, Steven
Keyword(s): 3D printing; rheology; Young's Modulus
Abstract: The rheology of dense, aqueous pastes of soda-lime glass frit and a polysaccharide binder, designed for use in a recently developed glass 3D-printing process, is reported. Pastes containing either xanthan gum or 2-hydroxyethyl cellulose binder and glass frit with average particle sizes of either 38 ...
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From Scan to Print: 3D Printing as a Means for Replication

Wed, 24 Sep 2014 16:10:01 PDT

HPL-2014-30 From Scan to Print: 3D Printing as a Means for Replication - Klein, Susanne; Avery, Michael; Adams, Guy; Pollard, Stephen; Simske, Steven
Keyword(s): 3D printing; scanning; software; fidelity
Abstract: Replication, or making exact copies with consistent results, is at the heart of manufacturing. It is used in mass production of all kinds of items, from foodstuff to cars, from houses to books. But it is also used to reproduce already existing objects. In the 18th and 19th centuries plaster casting ...
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On Automatic Text Segmentation

Wed, 24 Sep 2014 16:10:01 PDT

HPL-2014-35 On Automatic Text Segmentation - Dadachev, Boris; Balinsky, Helen; Balinsky, Alexander
Keyword(s): Natural Language Processing; Automatic Text Segmentation; Weighted Feature Extraction; Unusual Behavior Detection; Scale-Space Theory
Abstract: Automatic text segmentation, which is the task of breaking a text into topically-consistent segments, is a fundamental problem in Natural Language Processing, Document Classification and Information Retrieval. Text segmentation can significantly improve the performance of various text mining algorit ...
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Migrating SimCloud to HP Helion

Wed, 24 Sep 2014 16:10:01 PDT

HPL-2014-36 Migrating SimCloud to HP Helion - Oblea, Francisco; Votaw, Annabelle Eseo; Kothari, Sunil; Zeng, Jun
Keyword(s): Cloud deployment; HP Helion; OpenStack; Software as a Service
Abstract: This is our submission to HP Helion Tech Champs Contest. SimCloud is a Simulation as a Service (SaaS) created by HP Labs/Print and Content Delivery Lab driven by the need from PPS/Graphics business for a recommendation tool that can quantitatively differentiate amongst different equipment configurat ...
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Air Cooling Limits of 3D Stacked Logic Processor and Memory Dies

Thu, 22 May 2014 10:10:01 PDT

HPL-2014-24 Air Cooling Limits of 3D Stacked Logic Processor and Memory Dies - Kumari, Niru; Shih, Rocky; Escobar-Vargas, Sergio; Cader, Tahir; Govyadinov, Alexander; Anthony, Sarah; Bash, Cullen
Keyword(s): 3D stack; 3D IC stack; thermal management
Abstract: Through-Silicon-Vias (TSVs) enable 3D stack of logic processor and memory dies with significant improvement in latency and energy efficiency of large memory-bound computations. However, additional layers of memory die increase IC package thermal resistance. Thermal management has been identified as ...
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Recommending Learning Resources with Selected Passage based on Latent Topics in E-Text

Thu, 22 May 2014 10:10:01 PDT

HPL-2014-25 Recommending Learning Resources with Selected Passage based on Latent Topics in E-Text - Liu, Lei; Koutrika, Georgia
Keyword(s): .
Abstract: When readers have difficulty to understand any part of the e-text, they may want to find some learning resources to help them understand. Treating the whole unclear passage as the query and submit it to a search engine is unsuccessful since existing search engines were designed to accept small queri ...
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Design of an Energy-Efficient Silicon Microring Resonator-Based Photonic Transmitter

Wed, 7 May 2014 10:10:01 PDT

HPL-2014-21 Design of an Energy-Efficient Silicon Microring Resonator-Based Photonic Transmitter - Li, Cheng; Chen, Chin-Hui; Wang, Binhao; Palermo, Samuel; Fiorentino, Marco; Beausoleil, Raymond
Keyword(s): Silicon ring resonator; optical interconnects; pre-emphasis
Abstract: Silicon microring resonator-based photonic interconnects offer an attractive substitute to conventional electrical interconnects due to the negligible frequency-dependent channel loss and high bandwidth density offered via wavelength-division multiplexing (WDM). This paper presents silicon photonic ...
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When Data Must Satisfy Constraints Upon Writing

Wed, 23 Apr 2014 10:10:01 PDT

HPL-2014-19 When Data Must Satisfy Constraints Upon Writing - Ordentlich, Erik; Roth, Ron M.
Keyword(s): .
Abstract: We initiate a study of constrained codes in which any codeword can be transformed into any other codeword by a sequence of single symbol changes such that the intermediate words (after each symbol change) all satisfy the underlying constraint. We shall refer to a set of constrained sequences with th ...
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Sensitivity Analysis and Optimization of Sub-wavelength Optical Gratings Using Adjoints

Mon, 7 Apr 2014 10:10:01 PDT

HPL-2014-16 Sensitivity Analysis and Optimization of Sub-wavelength Optical Gratings Using Adjoints - Niederberger, Armand C. R.; Fattal, David A.; Gauger, Nicolas R.; Fan, Shanhui; Beausoleil, Raymond G.
Keyword(s): simulation; optimization
Abstract: Numerical optimization of photonic devices is often limited by a large design space: the conventional finite-differences gradient method requires as many electric field computations as there are design parameters. Adjoint-based optimization can deliver the same gradients with only two electric field ...
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Modeling Mutual Influence Between Social Actions and Social Ties

Mon, 7 Apr 2014 10:10:01 PDT

HPL-2014-18 Modeling Mutual Influence Between Social Actions and Social Ties - Yu, Xiaofeng; Xie, Jun Qing
Keyword(s): Social Actions and Social Ties; Mutual Influence
Abstract: In online social media, social action prediction and social tie discovery are two fundamental tasks for social network analysis. Traditionally, they were considered as separate tasks and solved independently. In this paper, we investigate the high correlation and mutual influence between social acti ...
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COVR: Composable Output-Valid Resilient Messaging

Sat, 22 Mar 2014 10:10:01 PDT

HPL-2014-14 COVR: Composable Output-Valid Resilient Messaging - Karp, Alan H.; Stiegler, Marc; Kelly, Terence
Keyword(s): Resilience; messaging protocol; fault tolerance
Abstract: As distributed systems scale to larger sizes, the impact of crash-restart failures increases. These failures must be dealt with in a principled manner since they may result in data inconsistencies. Current solutions often prove unworkable at large scale or when the applications are distributed acros ...
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Atlas: Leveraging Locks for Non-volatile Memory Consistency

Mon, 24 Feb 2014 16:10:01 PST

HPL-2013-78R1 Atlas: Leveraging Locks for Non-volatile Memory Consistency - Chakrabarti, Dhruva R.; Boehm, Hans-J.; Bhandari, Kumud
Keyword(s): non-volatile memory; transactions; locks
Abstract: Non-volatile memory, such as memristors and PCRAM, can revolutionize the way programs persist data. In-memory objects can be persistent as the program executes, thus removing the need for a separate data storage format. However, the challenge is to ensure that such data remains consistent if a failu ...
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The NFA Segments Scan Algorithm

Mon, 24 Feb 2014 16:10:01 PST

HPL-2014-10 The NFA Segments Scan Algorithm - Barkol, Omer; Lehavi, David
Keyword(s): formal languages; regular expression; automata
Abstract: We present a novel way for parsing text with non deterministic finite automatons. For "real life" regular expressions and text, our algorithm scans only a fraction of the characters, and performs a small number of operations for each of these characters (for synthetic worse case scenarios, it would ...
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A WDM Silicon Photonic Transmitter Based on Carrier-Injection Microring Modulators

Mon, 24 Feb 2014 16:10:01 PST

HPL-2014-11 A WDM Silicon Photonic Transmitter Based on Carrier-Injection Microring Modulators - Chen, Chin-Hui; Li, Cheng; Shafik, Ayman; Fiorentino, Marco; Chiang, Patrick; Palermo, Samuel; Beausoleil, Raymond
Keyword(s): Optical interconnects; Photonic integrated circuits
Abstract: We present a 5 x 10 Gbps WDM silicon photonic transmitter based on carrier-injection type microring modulators. Resonant wavelengths can be adjusted by both thermal heaters and bias tuning. ...
Full Report



Technology Survey on Video Face Tracking

Mon, 24 Feb 2014 16:10:01 PST

HPL-2014-13 Technology Survey on Video Face Tracking - Zhang, Tong; Gomes, Herman Martins
Keyword(s): face tracking; video analytics; video surveillance; object tracking; video face recognition; technology survey
Abstract: With the pervasiveness of monitoring cameras installed in public areas, schools, hospitals, work places and homes, video analytics technologies for interpreting these video contents are becoming increasingly relevant to people's lives. Among such technologies, human face detection and tracking (and ...
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CACTI-IO Technical Report

Sat, 7 Dec 2013 10:10:01 PST

HPL-2013-79 CACTI-IO Technical Report - Jouppi, Norman P.; Kahng, Andrew B.; Muralimanohar, Naveen; Srinivas, Vaishnav
Keyword(s): IO; Interconnect; SERDES; PHY; Memory bus; DDR; LPDDR
Abstract: We describe CACTI-IO, an extension to CACTI that includes power, area and timing models for the IO and PHY of the off-chip memory interface for various server and mobile configurations. CACTI-IO enables quick design space exploration of the off-chip IO along with the DRAM and cache parameters. We de ...
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Automatic Text and Data Stream Segmentation Using Weighted Feature Extraction

Thu, 7 Nov 2013 16:10:01 PST

HPL-2013-72 Automatic Text and Data Stream Segmentation Using Weighted Feature Extraction - Dadachev, Boris; Balinsky, Alexander; Balinsky, Helen; Forman, George
Keyword(s): helmholtz principle; text segmentation; feature extraction; data mining
Abstract: Automatic text and data stream segmentation is a fundamental problem in text data mining. Even moderately long document may consist of several relatively independent topics and parts. Such different parts can seriously affect performance of classification and mining algorithms. Applications of data ...
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Generic Crash-Resilient Storage for Indigo and Beyond

Thu, 7 Nov 2013 16:10:01 PST

HPL-2013-75 Generic Crash-Resilient Storage for Indigo and Beyond - Blattner, Aviv; Dagan, Ram; Kelly, Terence
Keyword(s): fault tolerance; Indigo; storage; persistent heaps
Abstract: Computer crashes threaten application data integrity. The threat is particularly acute for expensive industrial equipment such as high-volume printing presses, whose stringent uptime requirements demand both high performance during normal operation and rapid recovery following crashes. We have desig ...
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Tradeoffs in Compressing Virtual Machine Checkpoints

Tue, 22 Oct 2013 16:10:01 PDT

HPL-2013-68 Tradeoffs in Compressing Virtual Machine Checkpoints - Hou, Kai-Yuan; Shin, Kang G.; Turner, Yoshio; Singhal, Sharad
Keyword(s): checkpointing; cloud services; failure recovery; efficiency; scalability
Abstract: Checkpoint replication is a prevalent way of maintaining virtual machine availability in the presence of host failures. Since checkpoint replication can impose heavy load on network resources, checkpoint compression has been suggested to reduce network usage. This paper presents the first detailed e ...
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SAIL: Single Access Point Based Indoor Localization

Mon, 7 Oct 2013 16:10:01 PDT

HPL-2013-63 SAIL: Single Access Point Based Indoor Localization - Mariakakis, Alex; Sen, Souvik; Lee, Jeongkeun; Kim, Kyu-Han
Keyword(s): Indoor positioning; WiFi Sensing; Mobile Phone
Abstract: Despite years of innovative research, indoor localization has yet to become mainstream. Existing solutions that use WiFi-based techniques either rely on a large density of APs, manual fingerprinting, or prescribes crowdsourcing. They achieve satisfactory accuracy, but are not yet practical enough to ...
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Corybantic: Towards the Modular Composition of SDN Control Programs

Fri, 6 Sep 2013 16:10:01 PDT

HPL-2013-62 Corybantic: Towards the Modular Composition of SDN Control Programs - AuYoung, Alvin; Banerjee, Sujata; Lee, Jeongkeun; Mogul, Jeffrey C.; Mudigonda, Jayaram; Popa, Lucian; Sharma, Puneet; Turner, Yoshio
Keyword(s): SDN; resource management; composing; policy; auctions
Abstract: Software-Defined Networking (SDN) promises to enable vigorous innovation, through separation of the control plane from the data plane, and to enable novel forms of network management, through a controller that uses a global view to make globally-valid decisions. The design of SDN controllers creates ...
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Introducing Pathogen: A Real-Time Virtual Machine Introspection Framework

Thu, 22 Aug 2013 10:10:01 PDT

HPL-2013-55 Introducing Pathogen: A Real-Time Virtual Machine Introspection Framework - Roberts, Anthony; McClatchey, Richard; Liaquat, Saad; Edwards, Nigel; Wray, Mike
Keyword(s): Security; Monitoring; Introspection; Malware
Abstract: In recent years, malware has grown extremely rapidly in complexity and rates of system infection. Current generation anti-virus and anti-malware software provides system protection through the use of locally installed monitoring agents, which are dependent upon vendor generated signature and heurist ...
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Silicon Photonic Integrated Devices For Optical Interconnects

Thu, 22 Aug 2013 10:10:01 PDT

HPL-2013-56 Silicon Photonic Integrated Devices For Optical Interconnects - Liang, Di; Kurczveil, Geza; Chen, Chin-Hui; Fiorentino, Marco; Peng, Zhen; Beausoleil, Raymond G.
Keyword(s): Optical interconnects; Integrated optoelectronic circuits
Abstract: We present our latest update on key components in the integrated Si photonic interconnect system, including hybrid Si microring lasers, Si microring modulators, hybrid Si photodetector and passive waveguide devices. ...
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OpenStack Federation in Experimentation Multi-cloud Testbeds

Thu, 22 Aug 2013 10:10:01 PDT

HPL-2013-58 OpenStack Federation in Experimentation Multi-cloud Testbeds - Lorenzo del Castillo, Juan Angel; Mallichan, Kate; Al-Hazmi, Yahya
Keyword(s): Cloud Federation; cloud computing; openstack
Abstract: There is an increasing number of cloud platforms emerging in both academia and industry. They often federate resources from multiple infrastructures in order to benefit from the unique features that each presents. After introducing the main capabilities and features of OpenStack, this article addres ...
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Home Platform over BonFIRE Project (HOPBOP)

Thu, 22 Aug 2013 10:10:01 PDT

HPL-2013-59 Home Platform over BonFIRE Project (HOPBOP) - Ortiz Sanchez, Byron; Diz Martinez, Paula; Lorenzo del Castillo, Juan Angel
Keyword(s): BonFIRE; QoS; Home Platform; latency; resilience
Abstract: HOPBOP is one out of five new experiments in the EU FP7 BonFIRE project that have been selected in the second open call. The aim of this experiment is to test the Televes Home Platform in a real scenario, where constraints of bandwidth, processing and storing converge and may compromise the throughp ...
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Integrated DWDM Silicon Photonic Transceiver with Self-Adaptive CMOS Circuits for Chip-to-Chip Optical Interconnects

Tue, 6 Aug 2013 16:10:01 PDT

HPL-2013-50 Integrated DWDM Silicon Photonic Transceiver with Self-Adaptive CMOS Circuits for Chip-to-Chip Optical Interconnects - Chen, Chin-Hui; Li, Cheng; Bai, Rui; Shafik, Ayman; Fiorentino, Marco; Peng, Zhen; Chiang, Patrick; Palermo, Samuel; Beausoleil, Raymond
Keyword(s): optical interconnect
Abstract: . ...
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3D Printing: When and Where Does It Make Sense?

Tue, 6 Aug 2013 16:10:01 PDT

HPL-2013-51 3D Printing: When and Where Does It Make Sense? - Klein, Susanne; Adams, Guy; Dickin, Fraser; Simske, Steve
Keyword(s): 3D printing; hybrid printing; glass; additive manufacturing
Abstract: Twenty years ago, when Captain Jean-Luc Picard ordered: "Tea, Earl Grey, hot" it emerged in a pot from the Star Trek replicator, a machine which made everything and anything from seemingly nothing. An image was created which is so ingrained in our perception of the possible future that 3D printing i ...
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Memristive Devices for Computing: Mechanisms, Applications and Challenges

Mon, 22 Jul 2013 16:10:01 PDT

HPL-2013-48 Memristive Devices for Computing: Mechanisms, Applications and Challenges - Yang, J. Joshua; Choi, Byung Joon; Zhang, Min-Xian; Torrezan, Antonio C.; Strachan, John Paul; Williams, R. Stanley
Keyword(s): memristor; switch; memristive device; computing
Abstract: Memristive devices are two terminal electrical resistance switches that can retain a state of internal resistance based on the history of applied voltage and current. These devices can be used for computing by both storing and processing information. The switching mechanisms, applications and challe ...
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The Who, What, Why and How of High Performance Computing Applications in the Cloud

Mon, 22 Jul 2013 16:10:01 PDT

HPL-2013-49 The Who, What, Why and How of High Performance Computing Applications in the Cloud - Gupta, Abhishek; Kale, Laxmikant V.; Gioachin, Filippo; March, Verdi; Suen, Chun Hui; Lee, Bu-Sung; Faraboschi, Paolo; Kaufmann, Richard; Milojicic, Dejan
Keyword(s): High Performance Computing; Cloud; Applications; Supercomputers; Performance Evaluation; Economics
Abstract: Cloud computing is emerging as an alternative to supercomputers for some of the high-performance computing (HPC) applications that do not require a fully dedicated machine. With cloud as an additional deployment option, HPC users are faced with the challenges of dealing with highly heterogeneous res ...
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Denoising as well as the best of any two denoisers

Sun, 7 Jul 2013 10:10:01 PDT

HPL-2013-45 Denoising as well as the best of any two denoisers - Ordentlich, Erik
Keyword(s): .
Abstract: Given two arbitrary sequences of denoisers for block lengths tending to infinity we ask if it is possible to construct a third sequence of denoisers with an asymptotically vanishing (in block length) excess expected loss relative to the best expected loss of the two given denoisers for all clean cha ...
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Fast Steered Response Power Computation in 3D Spatial Regions

Sat, 22 Jun 2013 10:10:01 PDT

HPL-2013-40 Fast Steered Response Power Computation in 3D Spatial Regions - Said, Amir; Lee, Bowon; Kalker, Ton
Keyword(s): volumetric integral; branch-and-bound;
Abstract: ...
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Improving Restore Speed for Backup Systems that Use Inline Chunk-Based Deduplication

Sat, 22 Jun 2013 10:10:01 PDT

HPL-2013-41 Improving Restore Speed for Backup Systems that Use Inline Chunk-Based Deduplication - Lillibridge, Mark; Eshghi, Kave; Bhagwat, Deepavali
Keyword(s): deduplication; fragmentation; restore; caching; off-line caching
Abstract: Slow restoration due to chunk fragmentation is a serious problem facing inline chunk-based data deduplication systems: restore speeds for the most recent backup can drop orders of magnitude over the lifetime of a system. We study three techniques--increasing cache size, container capping, and using ...
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Tell Me What I Don't Know - Making the most of Social Health Forums

Sat, 22 Jun 2013 10:10:01 PDT

HPL-2013-43 Tell Me What I Don't Know - Making the most of Social Health Forums - Rolia, Jerome; Yao, Wen; Basu, Sujoy; Lee, Wei-Nchih; Singhal, Sharad; Kumar, Akhil; Sabella, Sharat
Keyword(s): Situational awareness; healthcare application
Abstract: We describe a novel approach to helping patients learn about their condition using social health forums. We infer a patient's condition based on her clinical data, and assign her to a clinical state pertaining to that condition. Our system presents the patient with forum posts that are most relevant ...
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Approximate Graph Mining with Label Costs

Sat, 8 Jun 2013 10:10:01 PDT

HPL-2013-36 Approximate Graph Mining with Label Costs - Anchuri, Pranay; Zaki, Mohammed J.; Barkol, Omer; Golan, Shahar; Shamy, Moshe
Keyword(s): data mining; graph analysis; cmdb; approximation techniques;
Abstract: Many real-world graphs have complex labels on the nodes and edges. Mining only exact patterns yields limited insights, since it may be hard to find exact matches. However, in many domains it is relatively easy to compute some cost (or distance) between different labels. Using this information, it be ...
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Hamming-weight constrained coded arrays based on covering codes

Wed, 22 May 2013 10:10:01 PDT

HPL-2013-33 Hamming-weight constrained coded arrays based on covering codes - Ordentlich, Erik; Roth, Ron M.
Keyword(s):
Abstract: We present a framework based on covering codes over the set of binary n-words for coding data into n * n binary arrays with a prescribed upper bound on the Hamming weight (i.e., number of 1's) in each row and column. We obtain previously presented schemes for the case when the upper bound is n=2 as ...
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A Bluetooth Digital Camera Appliance

Fri, 29 Mar 2013 16:10:01 PDT

HPL-2003-265R1 A Bluetooth Digital Camera Appliance - McReynolds, Alan; Recker, John ; Tourrilhes, Jean; Krishnan, Venky
Keyword(s): Bluetooth; camera; upload
Abstract: The digital camera's role in the photographic process is still largely limited to acquiring photographic images. A wireless link associated with software services on an access point allows a camera to finally supercede the "film roll" processing model. Adding remote services and a local cache of ima ...
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A Rules Based Algorithm for Self-Organizing Virtual Sensors

Fri, 29 Mar 2013 16:10:01 PDT

HPL-2006-101R1 A Rules Based Algorithm for Self-Organizing Virtual Sensors - Mesarina, Malena ; Das, Devaraj; Recker, John
Keyword(s): sensor networks; self-organizing; virtual sensors
Abstract: Current methods of programming sensor nodes require individual programming of sensors, impeding their usage in practical industry applications. In this paper, we present a methodology that allows sensors to be programmed based on functionality, providing a higher level of abstraction to applications ...
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Line-of-sight signaling and positioning for mobile devices

Fri, 29 Mar 2013 16:10:01 PDT

HPL-2013-22 Line-of-sight signaling and positioning for mobile devices - Hong, Wei; Samadani, Ramin; Baker, Mary
Keyword(s): Line-of-sight; device positioning; device identification; optical signaling; mobile device
Abstract: We are developing an optical line-of-sight signaling technology that enables mobile devices such as smartphones, tablets, and laptops to identify, locate, and receive information from other devices and infrastructure within their vicinity. Using this technology we can determine where particular devi ...
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Electrophoretic liquid crystal displays: How far are we?

Fri, 29 Mar 2013 16:10:01 PDT

HPL-2013-23 Electrophoretic liquid crystal displays: How far are we? - Klein, Susanne
Keyword(s): Liquid crystal; electrophoresis; display
Abstract: We are in the middle of another revolution in information processing and distribution. After the invention of script and then print, pictures are taking over again. The number of gadgets with displays is larger than the world population. On average every single person on earth owns at least one devi ...
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Cells: a Self-hosting Virtual Infrastructure Service

Fri, 8 Mar 2013 16:10:01 PST

HPL-2012-158R1 Cells: a Self-hosting Virtual Infrastructure Service - Coles, Alistair; Deliot, Eric; Edwards, Aled; Fischer, Anna; Goldsack, Patrick; Guijarro, Julio; Hawkes, Rycharde; Kirschnick, Johannes; Loughran, Steve; Murray, Paul; Wilcock, Lawrence
Keyword(s): cloud computing; infrastructure as a service
Abstract: We describe the design and implementation of Cells, a novel multi-tenanted virtual infrastructure service. Cells has the unique property of being self-hosting: it operates its own management system within one of the tenant virtual infrastructures that it manages and therefore benefits from the same ...
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Identifying Business Tasks and Commitments from Email and Chat Conversations

Fri, 8 Mar 2013 16:10:01 PST

HPL-2013-4 Identifying Business Tasks and Commitments from Email and Chat Conversations - Kalia, Anup; Motahari Nezhad, Hamid Reza; Bartolini, Claudio; Singh, Munindar
Keyword(s): Task Extraction; natural-language processing; Case Management;
Abstract: Case management applications and, more generally, people-centric processes involve the definition, resolution and communication of commitments for tasks over channels such as chat and email. Identifying and tracking tasks and commitments can help in streamlining the collaborative work in business en ...
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The influence of suspended nano-particles on the Frederiks threshold of the nematic host

Fri, 8 Mar 2013 16:10:01 PST

HPL-2013-5 The influence of suspended nano-particles on the Frederiks threshold of the nematic host - Klein, Susanne; Richardson, Robert M; Greasty, Robert; Jenkins, Rhys; Stone, Joseph; Thomas, Michael R; Sarua, Andrei
Keyword(s): Frederiks transition; barium titanate; liquid crystal
Abstract: In recent years several papers reported an enhanced dielectric anisotropy when ferroelectric particles were suspended in a liquid crystal. These results seem to be sensitive to the liquid crystal used and the preparation method of the ferroelectric particles. In this paper we compare different prepa ...
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Electro-induced Orientational Ordering of Anisotropic Pigment Nanoparticles

Fri, 8 Mar 2013 16:10:01 PST

HPL-2013-6 Electro-induced Orientational Ordering of Anisotropic Pigment Nanoparticles - Greasty, Robert J; Richardson, Robert M; Klein, Susanne; Cherns, David; Thomas, Michael R; Pizzey, Claire; Terrill, Nick; Rochas, Cyrille
Keyword(s): Anisotropic pigment nanoparticles; colloids; liquid crystals; X-ray scattering; electric field alignment.
Abstract: The response of anisotropic pigment particle suspensions to externally applied electric fields has been explored for possible application in reflective display technologies. Three different types of pigment particle were suspended in dodecane using a polymeric stabiliser and showed Schlieren texture ...
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Non-cooperative joint replenishment under asymmetric information

Fri, 8 Mar 2013 16:10:01 PST

HPL-2013-9 Non-cooperative joint replenishment under asymmetric information - Korpeoglu, Evren; Guler, Kemal; Sen, Alper
Keyword(s): inventory competition; Joint replenishment; Economic order quantity model; asymmetric information;
Abstract: We consider jointly replenishing n ex-ante identical firms that operate under an EOQ like setting using a non-cooperative game under asymmetric information. In this game, each firm, upon being privately informed about its demand rate (or inventory cost rate), submits a private contribution to an int ...
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Multi-period supplier selection with price uncertainty

Fri, 8 Mar 2013 16:10:01 PST

HPL-2013-10 Multi-period supplier selection with price uncertainty - Sen, Alper; Yaman, Hande; Guler, Kemal; Korpeoglu, Evren
Keyword(s): Supplier selection; Quantity discounts; Price uncertainty; multi-stage stochastic programming
Abstract: We consider a problem faced by a procurement manager who needs to purchase a large volume of multiple items over a planning horizon (a quarter or a year) that consists of multiple periods (months). There are multiple suppliers that are qualified to offer all or a portion of the items in consideratio ...
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Boosted Varying-Coefficient Regression Models for Product Demand Prediction

Fri, 8 Mar 2013 16:10:01 PST

HPL-2013-11 Boosted Varying-Coefficient Regression Models for Product Demand Prediction - Wang, Jianqiang (Jay); Hastie, Trevor
Keyword(s): Boosting; gradient descent; tree-based regression; varying-coefficient model
Abstract: Estimating the aggregated market demand for a product in a dynamic market is critical to manufacturers and retailers. Motivated by the need for a statistical demand prediction model for laptop pricing at Hewlett-Packard, we have developed a novel boosting-based varying-coefficient regression model. ...
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Dictionary and pattern-based recognition of organization names in Russian news texts

Fri, 8 Mar 2013 16:10:01 PST

HPL-2013-14 Dictionary and pattern-based recognition of organization names in Russian news texts - Solovyev, Valery; Gareev, Rinat; Ivanov, Vladimir; Serebryakov, Sergey; Vassilieva, Natalia;
Keyword(s): Named entity recognition; knowledge-based event extraction;
Abstract: This paper describes a part of the event extraction system which has been developed in collaboration with HP Labs Russia. The domain of input texts is business news feeds. One of the most important event participant types is 'Organization'. This paper is focused on the problem of organization names ...
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Forensic Authentication of Data Bearing Halftones

Fri, 8 Mar 2013 16:10:01 PST

HPL-2013-15 Forensic Authentication of Data Bearing Halftones - Pollard, Stephen; Ulichney, Robert; Gaubatz, Matthew; Simske, Steven
Keyword(s): forensic printing; Stegatones; image registration; Gabor filters; biometrics
Abstract: This paper introduces a practical system for combining overt, covert and forensic information in a single, small printed feature. The overt "carrier" feature need not be a dedicated security mark such as a 2D or color barcode, but can instead be integrated into a desirable object such as a logo as p ...
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Print Biometrics: Recovering Forensic Signatures from Halftone Images

Tue, 22 Jan 2013 16:10:01 PST

HPL-2013-1 Print Biometrics: Recovering Forensic Signatures from Halftone Images - Pollard, Stephen; Simske, Steven; Adams, Guy
Keyword(s): document forensics; biometrics; Gabor filters; anti-counterfeiting
Abstract: High-resolution imaging is useful for the forensic identification of unique printed regions. In this paper, we adapt an iris biometric approach to provide significant statistical discrimination between any two imaged halftone areas. The method is based on image registration followed by 2D Gabor wave ...
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Resource Contention Detection and Management

Tue, 22 Jan 2013 16:10:01 PST

HPL-2013-3 Resource Contention Detection and Management - Mukherjee, J.; Krishnamurthy, D.; Rolia, J.; Hyser, C.
Keyword(s): Performance; consolidation; quality of service
Abstract: Public and private cloud computing environments typically employ virtualization methods to consolidate application workloads onto shared servers. Modern servers typically have one or more sockets each with one or more computing cores, a multi-level caching hierarchy, a memory subsystem, and an inter ...
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Security Analysis and Improvements of IEEE802.11u

Fri, 21 Dec 2012 16:10:01 PST

HPL-2012-243 Security Analysis and Improvements of IEEE802.11u - Liu, Yongqiang; Li, Shijian; Xie, Junqing; Xu, Xunteng
Keyword(s): IEEE802.11u; DoS Attack; Comeback Delay; u-Shield
Abstract: With the increasing popularity of IEEE802.11u-based Wi-Fi CERTIFIED Passpoint program, the IEEE802.11u protocol is being implemented in a large number of Wi-Fi equipments. This paper thoroughly analyzes the security vulnerabilities of IEEE802.11u and discovers three potential attacks: Bogus GAS Resp ...
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Why Locks Should Not Be Used In Generic Programming

Fri, 21 Dec 2012 16:10:01 PST

HPL-2012-246 Why Locks Should Not Be Used In Generic Programming - Gottschlich, Justin E; Boehm, Hans-J.
Keyword(s): locks; mutexes; generic programming; templates; transactional memory; deadlock
Abstract: Locks are the most widely used synchronization mechanism for threads. It is well-known that naive use of locks can easily lead to program failures through deadlock. Such deadlock is usually avoided through careful lock ordering. We argue that this approach is incompatible with several increasingly i ...
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Speculative computation in Multilisp.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-1.html CRL-90-1 Speculative computation in Multilisp. - Osborne, Randy B.
Keyword(s): Sorting-(Electronic computers); Computer networks; Multiprocessors.
Abstract: ...
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Validated retrieval in case-based reasoning.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-2.html CRL-90-2 Validated retrieval in case-based reasoning. - Simoudis, Evangelos; Miller, James.
Keyword(s): Garbage collection-(Computer science); Multiprocessors;
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Consistent timestamping for transactions in distributed systems.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-3.html CRL-90-3 Consistent timestamping for transactions in distributed systems. - Lomet, David.
Keyword(s): Parallel processing-(Electronic computers); Electronic data processing-Distributed processing; Interactive computer systems.
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Recovery for shared disk systems using multiple redo logs.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-4.html CRL-90-4 Recovery for shared disk systems using multiple redo logs. - Lomet, David B.
Keyword(s): Electronic data processing-Distributed processing;Interactive computer systems.
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Acquiring knowledge for validation models.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-5.html CRL-90-5 Acquiring knowledge for validation models. - Simoudis, Evangelos; Miller, James.
Keyword(s): Electronic data processing-Distributed processing; Expert systems-(Computer science); Reasoning.
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A replay mechanism for mostly functional parallel programs.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-6.html CRL-90-6 A replay mechanism for mostly functional parallel programs. - Halstead, Robert H. Jr.; Kranz, David A.
Keyword(s): X Window System-(Computer system); Windows-(Computer programs); Interactive computer systems.
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Lazy task creation : a technique for increasing the granularity of parallel programs.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-7.html CRL-90-7 Lazy task creation : a technique for increasing the granularity of parallel programs. - Mohr, Eric; Kranz, David A; Halstead, Robert H. Jr.
Keyword(s): Parallel programming-(Computer science); Interactive computer systems.
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The X Window System, Version 11.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-8.html CRL-90-8 The X Window System, Version 11. - Gettys, James; Karlton, Philip L.; McGregor, Scott.
Keyword(s): Expert systems-(Computer science); Reasoning; Knowledge, Theory of.
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Non-blocking garbage collection for multiprocessors.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-9.html CRL-90-9 Non-blocking garbage collection for multiprocessors. - Herlihy, Maurice; Moss, J. Eliot B.
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Analyzing distributed commitment by reasoning about knowledge.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-10.html CRL-90-10 Analyzing distributed commitment by reasoning about knowledge. - Mazer, Murray S; Lochovsky, Frederick H.
Keyword(s): Parallel processing-(Electronic computers); Multiprocessors.
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Counting networks and multi-processor coordination.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-11.html CRL-90-11 Counting networks and multi-processor coordination. - Aspnes, James; Herlihy, Maurice; Shavit, Nir.
Keyword(s): Reasoning; Memory management-(Computer science);
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Real-time octree generation from rotating objects.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-12.html CRL-90-12 Real-time octree generation from rotating objects. - Szeliski, Richard.
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Shape from rotation.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-13.html CRL-90-13 Shape from rotation. - Szeliski, Richard.
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Reconstructing and visualizing models of neuronal dendrites.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-90-14.html CRL-90-14 Reconstructing and visualizing models of neuronal dendrites. - Carlbom, Ingrid; Harris, Kristen M.; Terzopoulos, Demetri.
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Typechecking polymorphism in Emerald.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-91-1.html CRL-91-1 Typechecking polymorphism in Emerald. - Black, Andrew P.; Hutchinson, Norman.
Keyword(s): Hard disks-(Computer science); File organization-(Computer science); Hard disk management.
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VDI - a visual debugging interface for image interpretation and other applications.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-91-2.html CRL-91-2 VDI - a visual debugging interface for image interpretation and other applications. - Klinker, Gudrun.
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A transactional model for long-running activities.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-91-3.html CRL-91-3 A transactional model for long-running activities. - Dayal, Umeshwar; Hsu, Meichun; Ladin, Rivka.
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Providing high availability using lazy replication.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-91-4.html CRL-91-4 Providing high availability using lazy replication. - Ladin, Rivka; Liskov, Barbara; Shrira, Liuba; Ghemawat, Sanjay.
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Randomized wait-free concurrent objects (extended abstract).

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-91-5.html CRL-91-5 Randomized wait-free concurrent objects (extended abstract). - Herlihy, Maurice.
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Impossibility results for asynchronous PRAM

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-91-6.html CRL-91-6 Impossibility results for asynchronous PRAM - Herlihy, Maurice.
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MLR : a recovery method for multi-level systems.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-91-7.html CRL-91-7 MLR : a recovery method for multi-level systems. - Lomet, David B.
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Concurrency and recovery for index trees.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-91-8.html CRL-91-8 Concurrency and recovery for index trees. - Lomet, David; Salzberg, Betty.
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Media recovery with time-split B-trees.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-91-9.html CRL-91-9 Media recovery with time-split B-trees. - Lomet, David; Salzberg Betty.
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A methodology for implementing highly concurrent data objects.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-91-10.html CRL-91-10 A methodology for implementing highly concurrent data objects. - Herlihy, Maurice.
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Linearizable counting networks.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-91-12.html CRL-91-12 Linearizable counting networks. - Herlihy, Maurice; Shavit, Nir; Waarts, Orli.
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Integrating computer graphics computer vision and image processing in scientific applications

Thu, 20 Dec 2012 10:10:01 PST

Integrating computer graphics computer vision and image processing in scientific applications - Carlbom, Ingrid; Hsu, William; Chakravarty, Indranil. CRL-91-13
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Surface modeling with oriented particle systems.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-91-14.html CRL-91-14 Surface modeling with oriented particle systems. - Szeliski, Richard; Tonnesen, David.
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Rollback databases.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-92-1.html CRL-92-1 Rollback databases. - Lomet, David; Salzberg, Betty.
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The organization engine : virtual data integration.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-92-3.html CRL-92-3 The organization engine : virtual data integration. - Miller, James S; Niedner, Carl; London, Jack.
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How the Rdb/VMS data sharing system became fast.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-92-4.html CRL-92-4 How the Rdb/VMS data sharing system became fast. - Lomet, David; Anderson, Rick; Rengarajan, T.K.; Spiro, Peter.
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Time-lapse snapshots

Thu, 20 Dec 2012 10:10:01 PST

Time-lapse snapshots - Dwork, Cynthia; Herlihy, Maurice; Plotkin, Serge; Waarts, Orli. CRL-92-5
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Low contention load balancing on large-scale multiprocessors

Thu, 20 Dec 2012 10:10:01 PST

Low contention load balancing on large-scale multiprocessors - Herlihy, Maurice; Lim, Ben-Hong; Shavit, Nir. CRL-92-6
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Transactional memory : architectural support for lock-free data structures.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-92-7.html CRL-92-7 Transactional memory : architectural support for lock-free data structures. - Herlihy, Maurice; Moss, J. Eliot B.
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Modeling and analysis of empirical data in collaborative environments

Thu, 20 Dec 2012 10:10:01 PST

Modeling and analysis of empirical data in collaborative environments - Carlbom, Ingrid; Hsu, William; Klinker, Gudrun; Szeliski, Richard ; Waters, Keith; Doyle, Michael; Gettys, Jim; Harris, Kristen M. ; Levergood, Tom; Palmer, Ricky; Palmer, Larry; Picart, Marc; Terzopoulos, Demetri; Tonnesen, David; Vannier, Michael; Wallace, Greg. CRL-92-8
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Private lock management.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-92-9.html CRL-92-9 Private lock management. - Lomet, David.
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Are DSP chips obsolete?

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-92-10.html CRL-92-10 Are DSP chips obsolete? - Stewart, Lawrence C; Payne, Andrew C.; Levergood, Thomas M.
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Modeling and visualization of empirical data

Thu, 20 Dec 2012 10:10:01 PST

Modeling and visualization of empirical data - Carlbom, Ingrid CRL-92-11
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Encapsulating plurality.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-92-12.html CRL-92-12 Encapsulating plurality. - Black, Andrew P.; Immel, Mark P.
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A new presumed commit optimization for two phase commit.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-93-1.html CRL-93-1 A new presumed commit optimization for two phase commit. - Lampson, Butler; Lomet, David.
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Key range locking strategies for improved concurrency.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-93-2.html CRL-93-2 Key range locking strategies for improved concurrency. - Lomet, David.
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Recovering 3D shape and motion from image streams using non-linear least squares

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-93-3.html CRL-93-3 Recovering 3D shape and motion from image streams using non-linear least squares - Szeliski, Richard; Kang, Sing Bing
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DECface: An automatic lip-synchronization algorithm for synthetic faces

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-93-4.html CRL-93-4 DECface: An automatic lip-synchronization algorithm for synthetic faces - Waters, Keith; Levergood, Thomas M.
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STDL : a portable language for transaction processing.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-93-5.html CRL-93-5 STDL : a portable language for transaction processing. - Bernstein, Philip A.; Gyllstrom, Per O.; Wimberg, Tom.
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Middleware : an architecture for distributed system services.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-93-6.html CRL-93-6 Middleware : an architecture for distributed system services. - Bernstein, Philip A.
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Robust shape recovery from occluding contours using a linear smoother.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-93-7.html CRL-93-7 Robust shape recovery from occluding contours using a linear smoother. - Szeliski, Richard; Weiss, Richard.
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AudioFile : a network-transparent system for distributed audio applications.

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-93-8.html CRL-93-8 AudioFile : a network-transparent system for distributed audio applications. - Levergood, Thomas M.; Payne, Andrew C.; Gettys, James; Treese, G. Winfield; Stewart, Lawrence C.
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LoFi: A TURBOchannel audio module

Thu, 20 Dec 2012 10:10:01 PST

http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-93-9.html CRL-93-9 LoFi: A TURBOchannel audio module - Levergood, Thomas M.
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