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University of Massachusetts Amherst
(273 results)-
White Papers
CASL: A Rapid-Prototyping Language for Modern Micro-Architectures
February 20, 2009, 12:00am PST
The authors introduce CASL, the CoGenT Architecture Specification Language, a mixed behavioral-structure architecture description language designed to facilitate fast-prototyping and tool...
Provided by University of Massachusetts Amherst
-
White Papers
Detecting Anomalies in Network Traffic Using Maximum Entropy Estimation
February 2, 2009, 12:00am PST
The authors develop a behavior-based anomaly detection method that detects network anomalies by checking the current network traffic against a baseline distribution estimated using the Maximum...
Provided by University of Massachusetts Amherst
-
White Papers
A Distributed Algorithm for Joint Sensing and Routing in Wireless Networks With Non-Steerable Directional Antennas
February 23, 2009, 12:00am PST
In many energy-rechargeable wireless sensor networks, sensor nodes must both sense data from the environment, and cooperatively forward sensed data to data sinks. Both data sensing and data...
Provided by University of Massachusetts Amherst
-
White Papers
High-Performance Complex Event Processing Over Streams
February 23, 2009, 12:00am PST
In this paper, the authors present the design, implementation, and evaluation of a system that executes complex event queries over real-time streams of RFID readings encoded as events. These...
Provided by University of Massachusetts Amherst
-
White Papers
Transparent Contribution of Storage and Memory
February 23, 2009, 12:00am PST
Many research projects have proposed contributory systems that utilize the significant free disk space, idle memory, and wasted CPU cycles found on end-user machines. These applications include...
Provided by University of Massachusetts Amherst
-
White Papers
Spider: Improving Mobile Networking With Concurrent Wi-Fi Connections
May 16, 2011, 12:00am PDT
The authors present an in-depth analysis of the performance of attempting concurrent AP connections from highly mo-bile clients. Previous solutions for concurrent Wi-Fi is limited to stationary...
Provided by University of Massachusetts Amherst
-
White Papers
Routing for Diverse Wireless Networks
July 21, 2010, 12:00am PDT
The paper is motivated by a simple question: can the authors design a simple routing protocol that works well across diverse wireless network environments such as meshes, MANETs, and DTNs? They...
Provided by University of Massachusetts Amherst
-
White Papers
Improving Mobile Networking With Concurrent Wi-Fi Connections
July 3, 2010, 12:00am PDT
Achieving ubiquitous connectivity or high aggregate throughput using a series of Wi-Fi access points can cause serious performance problems for highly mobile clients. While data transfer using a...
Provided by University of Massachusetts Amherst
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White Papers
Improved Memory Management for XML Data Stream Processing
July 3, 2010, 12:00am PDT
Running XPath queries on XML documents with minimum memory usage is a challenge. YFilter 1.0 stores the entire document in memory. The extensions to YFilter applied in are limited as they discuss...
Provided by University of Massachusetts Amherst
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White Papers
Dolly: Database Provisioning for the Cloud
February 16, 2011, 12:00am PST
The Cloud is an increasingly popular platform for e-commerce applications that can be scaled on-demand in a very cost effective way. Dynamic provisioning is used to autonomously add capacity in...
Provided by University of Massachusetts Amherst
-
White Papers
Kingfisher: A System for Elastic Cost-Aware Provisioning in the Cloud
January 26, 2010, 12:00am PST
Cloud computing platforms allow application providers to rent server capacity to run hosted applications and to dynamically vary the rented capacity to match demand. Today's cloud platforms offer...
Provided by University of Massachusetts Amherst
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White Papers
CloudNet: A Platform for Optimized WAN Migration of Virtual Machines
January 20, 2010, 12:00am PST
Cloud computing platforms are growing from clusters of machines within a data center to networks of data centers with resources spread across the globe. Virtual machine migration within the LAN...
Provided by University of Massachusetts Amherst
-
White Papers
Epsilon: Patching Mobile WiFi Networks
August 7, 2009, 12:00am PDT
Open Wi-Fi networks offer a chance to have ubiquitous, mobile connectivity by opportunistically leveraging previously deployed resources. Open Wi-Fi access points are densely deployed in many...
Provided by University of Massachusetts Amherst
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White Papers
SPIRE: Efficient Data Interpretation and Compression Over RFID Streams
September 28, 2009, 12:00am PDT
Despite its promise, RFID technology presents numerous challenges, including incomplete data, lack of location and containment information, and very high volumes. In this paper, the authors...
Provided by University of Massachusetts Amherst
-
White Papers
Witness-Based Detection of Forwarding Misbehaviors in Wireless Networks
August 2, 2009, 12:00am PDT
The authors consider the problem of identifying a node that incorrectly forwards packets in a static wireless ad hoc network. They propose a detection scheme that identifies a misbehaving node...
Provided by University of Massachusetts Amherst
-
White Papers
A Framework for Utility-Driven Network Trace Anonymization
February 20, 2009, 12:00am PST
The publication of network traces is critical for network research but their release is highly constrained by privacy and security concerns. The importance of a framework for anonymizing traces to...
Provided by University of Massachusetts Amherst
-
White Papers
A Unified Framework for the Automatic Generation of System Tools and Components
February 23, 2009, 12:00am PST
Machine description languages have long been suggested as a means for automatically generating simulator and compiler tools. Because of the complex nature of computers, designing a language that...
Provided by University of Massachusetts Amherst
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White Papers
Learning Causal Models of Relational Domains
July 2, 2010, 12:00am PDT
Methods for discovering causal knowledge from observational data have been a persistent topic of AI research for several decades. Essentially all of this work focuses on knowledge representations...
Provided by University of Massachusetts Amherst
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White Papers
Discovering Causal Knowledge by Design
July 2, 2010, 12:00am PDT
Causal knowledge is frequently pursued by researchers in many fields, such as medicine, economics, and social science, yet very little research in knowledge discovery focuses on discovering causal...
Provided by University of Massachusetts Amherst
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White Papers
Accurate Estimation of the Degree Distribution of Private Networks
July 2, 2010, 12:00am PDT
The authors describe an efficient algorithm for releasing a provably private estimate of the degree distribution of a network. The algorithm satisfies a rigorous property of differential privacy,...
Provided by University of Massachusetts Amherst
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White Papers
Bias/Variance Analysis for Relational Domains
June 11, 2007, 12:00am PDT
Bias/variance analysis is a useful tool for investigating the performance of machine learning algorithms. Conventional analysis decomposes loss into errors due to aspects of the learning process,...
Provided by University of Massachusetts Amherst
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White Papers
Query Optimization for Sensor Networks
August 19, 2008, 12:00am PDT
This paper proposes a new approach to obtain optimality in distributed query processing in a wireless sensor network environment. The goal of this paper is to design a scheme which supports...
Provided by University of Massachusetts Lowell
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White Papers
Collaborative Visual Analytics With Session Histories
April 1, 2009, 12:00am PDT
Using sonar to detect submarines used to be an effective method. Current technologies, however, have made it possible for submarines to thwart standard (active or passive) sonar mechanisms. One...
Provided by University of Massachusetts Lowell
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White Papers
Constructing Strong Barriers With Underwater Sensor Networks
October 12, 2008, 12:00am PDT
Using sonar to detect submarines used to be an effective method. Current technologies, however, have made it possible for submarines to thwart standard (active or passive) sonar mechanisms. One...
Provided by University of Massachusetts Lowell
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White Papers
Performance Evaluation of AES Targeting a High-End DSP
April 30, 2008, 12:00am PDT
Efficient implementation of block ciphers is critical towards achieving both high security and high-speed processing. Numerous block ciphers, such as the Advanced Encryption Standard, have been...
Provided by University of Massachusetts Lowell
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White Papers
Experimentally Validated Energy Analysis of Embedded Software
April 30, 2008, 12:00am PDT
A wide range of current and new technologies employ embedded systems that are characterized as both low-power and low-cost. Because of these constraints, maximizing the performance of these...
Provided by University of Massachusetts Lowell
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White Papers
Advanced Interactions With Heatmaps for Analyzing High-Dimensional Datasets
December 4, 2010, 12:00am PST
The authors introduce an extended heatmap visualization integrated with enhanced interactive capabilities and computational tools for analyzing large and complex datasets. A heatmap is capable of...
Provided by University of Massachusetts Lowell
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White Papers
The PL-Tree: A Fast High-Dimensional Access Method for Range Queries
December 9, 2009, 12:00am PST
The quest for processing range queries of high-dimensional data has resulted in a number of innovative indexing mechanisms. Most of the early methods index data according to their geometric...
Provided by University of Massachusetts Lowell
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White Papers
A Shifting Strategy for Dynamic Channel Assignment Under Spatially Varying Demand
January 1, 2011, 12:00am PST
This paper presents a new method for Dynamic Channel Assignment (DCA) in wireless cellular systems under random spatio-temporal variation of traffic demand. The method uses a two-phase Integer...
Provided by University of Massachusetts Lowell
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White Papers
Underwriting Syndicates, Information And The Secondary Market Liquidity Of Initial Public Offerings
September 10, 2007, 12:00am PDT
In this paper, the author examines whether the services provided by the underwriting syndicate have an impact on the secondary market liquidity for IPOs. Specifically, the author argues that...
Provided by University of Massachusetts
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White Papers
Redline: First Class Support for Interactivity in Commodity Operating Systems
November 3, 2008, 12:00am PST
While modern workloads are increasingly interactive and resource-intensive (e.g., graphical user interfaces, browsers, and multimedia players), current operating systems have not kept up. These...
Provided by University of Massachusetts Amherst
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White Papers
A Multi-Block Interleaving Structure for NAND Flash Memory Storage
May 16, 2008, 12:00am PDT
NAND flash memory is becoming more widely used in various computing systems due to improved cost effectiveness. This research is to design a cost effective solid state disk that can support high...
Provided by University of Massachusetts
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White Papers
PCS: An Efficient Clustering Method for High-Dimensional Data
May 10, 2008, 12:00am PDT
Clustering algorithms partition a set of objects into clusters based on similarity of objects. A clustering is therefore a set of clusters, where similar objects are placed in the same cluster....
Provided by University of Massachusetts Lowell
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White Papers
Integrated Technical Reference Model and Sensor Network Architecture
May 14, 2008, 12:00am PDT
This paper presents a multi-layered Integrated Technical Reference Model (I-TRM). The ITRM is based on a classical closed-loop control system and combines an Information-Centric Technical...
Provided by University of Massachusetts
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White Papers
Petri Nets Across Graduate Computer Science Curriculum
May 3, 2008, 12:00am PDT
This paper describes a comprehensive approach to teaching Petri nets across graduate computer science curriculum. Petri nets are used in several courses, both required and electives, as a...
Provided by University of Massachusetts
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White Papers
Current Global Imbalances And The Keynes Plan
December 1, 2007, 12:00am PST
The current state of the international economy is characterised by well-known "Global imbalances". Facts include: wide and persistent current account deficits run by the US, with correspondingly...
Provided by University of Massachusetts Amherst
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White Papers
The International Circuit Of Key Currencies And The Global Crisis: Is There Scope For Reform?
March 1, 2010, 12:00am PST
The causes of the global crisis are still hotly debated among economists, and for a good reason: the remedy crucially depends upon the diagnosis, and we still need a recipe to exit this crisis,...
Provided by University of Massachusetts Amherst
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White Papers
U.S., China, And The Unraveling Of Global Imbalances
November 1, 2007, 12:00am PDT
During the 1950s and 1960s, the capitalist world economy experienced unprecedented rapid growth, widely known as the "Golden age." However, by the late 1960s new contradictions emerged. High...
Provided by University of Massachusetts Amherst
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White Papers
Promising Avenues, False Starts And Dead Ends: Global Governance And Development Finance In The Wake Of The Crisis
November 1, 2010, 12:00am PDT
The paper examines three related questions. How is the crisis affecting the governance of the IMF and the influence that developing countries have within the institution; the policy space...
Provided by University of Massachusetts Amherst
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White Papers
Not Your Grandfather's IMF: Global Crisis, "Productive Incoherence" And Developmental Policy Space
August 1, 2010, 12:00am PDT
The response by the IMF (and developing country national governments) to the current global financial crisis represents a moment of what the author terms "Productive incoherence" that has...
Provided by University of Massachusetts Amherst
-
White Papers
Accurate Estimation of the Degree Distribution of Private Networks
July 2, 2010, 12:00am PDT
The authors describe an efficient algorithm for releasing a provably private estimate of the degree distribution of a network. The algorithm satisfies a rigorous property of differential privacy,...
Provided by University of Massachusetts Amherst
-
White Papers
Discovering Causal Knowledge by Design
July 2, 2010, 12:00am PDT
Causal knowledge is frequently pursued by researchers in many fields, such as medicine, economics, and social science, yet very little research in knowledge discovery focuses on discovering causal...
Provided by University of Massachusetts Amherst
-
White Papers
Learning Causal Models of Relational Domains
July 2, 2010, 12:00am PDT
Methods for discovering causal knowledge from observational data have been a persistent topic of AI research for several decades. Essentially all of this work focuses on knowledge representations...
Provided by University of Massachusetts Amherst
-
White Papers
A Unified Framework for the Automatic Generation of System Tools and Components
February 23, 2009, 12:00am PST
Machine description languages have long been suggested as a means for automatically generating simulator and compiler tools. Because of the complex nature of computers, designing a language that...
Provided by University of Massachusetts Amherst
-
White Papers
A Framework for Utility-Driven Network Trace Anonymization
February 20, 2009, 12:00am PST
The publication of network traces is critical for network research but their release is highly constrained by privacy and security concerns. The importance of a framework for anonymizing traces to...
Provided by University of Massachusetts Amherst
-
White Papers
Witness-Based Detection of Forwarding Misbehaviors in Wireless Networks
August 2, 2009, 12:00am PDT
The authors consider the problem of identifying a node that incorrectly forwards packets in a static wireless ad hoc network. They propose a detection scheme that identifies a misbehaving node...
Provided by University of Massachusetts Amherst
-
White Papers
SPIRE: Efficient Data Interpretation and Compression Over RFID Streams
September 28, 2009, 12:00am PDT
Despite its promise, RFID technology presents numerous challenges, including incomplete data, lack of location and containment information, and very high volumes. In this paper, the authors...
Provided by University of Massachusetts Amherst
-
White Papers
Epsilon: Patching Mobile WiFi Networks
August 7, 2009, 12:00am PDT
Open Wi-Fi networks offer a chance to have ubiquitous, mobile connectivity by opportunistically leveraging previously deployed resources. Open Wi-Fi access points are densely deployed in many...
Provided by University of Massachusetts Amherst
-
White Papers
CloudNet: A Platform for Optimized WAN Migration of Virtual Machines
January 20, 2010, 12:00am PST
Cloud computing platforms are growing from clusters of machines within a data center to networks of data centers with resources spread across the globe. Virtual machine migration within the LAN...
Provided by University of Massachusetts Amherst
-
White Papers
Kingfisher: A System for Elastic Cost-Aware Provisioning in the Cloud
January 26, 2010, 12:00am PST
Cloud computing platforms allow application providers to rent server capacity to run hosted applications and to dynamically vary the rented capacity to match demand. Today's cloud platforms offer...
Provided by University of Massachusetts Amherst
-
White Papers
Dolly: Database Provisioning for the Cloud
February 16, 2011, 12:00am PST
The Cloud is an increasingly popular platform for e-commerce applications that can be scaled on-demand in a very cost effective way. Dynamic provisioning is used to autonomously add capacity in...
Provided by University of Massachusetts Amherst
-
White Papers
Improved Memory Management for XML Data Stream Processing
July 3, 2010, 12:00am PDT
Running XPath queries on XML documents with minimum memory usage is a challenge. YFilter 1.0 stores the entire document in memory. The extensions to YFilter applied in are limited as they discuss...
Provided by University of Massachusetts Amherst
-
White Papers
Improving Mobile Networking With Concurrent Wi-Fi Connections
July 3, 2010, 12:00am PDT
Achieving ubiquitous connectivity or high aggregate throughput using a series of Wi-Fi access points can cause serious performance problems for highly mobile clients. While data transfer using a...
Provided by University of Massachusetts Amherst
-
White Papers
Routing for Diverse Wireless Networks
July 21, 2010, 12:00am PDT
The paper is motivated by a simple question: can the authors design a simple routing protocol that works well across diverse wireless network environments such as meshes, MANETs, and DTNs? They...
Provided by University of Massachusetts Amherst
-
White Papers
Spider: Improving Mobile Networking With Concurrent Wi-Fi Connections
May 16, 2011, 12:00am PDT
The authors present an in-depth analysis of the performance of attempting concurrent AP connections from highly mo-bile clients. Previous solutions for concurrent Wi-Fi is limited to stationary...
Provided by University of Massachusetts Amherst
-
White Papers
Transparent Contribution of Storage and Memory
February 23, 2009, 12:00am PST
Many research projects have proposed contributory systems that utilize the significant free disk space, idle memory, and wasted CPU cycles found on end-user machines. These applications include...
Provided by University of Massachusetts Amherst
-
White Papers
High-Performance Complex Event Processing Over Streams
February 23, 2009, 12:00am PST
In this paper, the authors present the design, implementation, and evaluation of a system that executes complex event queries over real-time streams of RFID readings encoded as events. These...
Provided by University of Massachusetts Amherst
-
White Papers
A Distributed Algorithm for Joint Sensing and Routing in Wireless Networks With Non-Steerable Directional Antennas
February 23, 2009, 12:00am PST
In many energy-rechargeable wireless sensor networks, sensor nodes must both sense data from the environment, and cooperatively forward sensed data to data sinks. Both data sensing and data...
Provided by University of Massachusetts Amherst
-
White Papers
Detecting Anomalies in Network Traffic Using Maximum Entropy Estimation
February 2, 2009, 12:00am PST
The authors develop a behavior-based anomaly detection method that detects network anomalies by checking the current network traffic against a baseline distribution estimated using the Maximum...
Provided by University of Massachusetts Amherst
-
White Papers
CASL: A Rapid-Prototyping Language for Modern Micro-Architectures
February 20, 2009, 12:00am PST
The authors introduce CASL, the CoGenT Architecture Specification Language, a mixed behavioral-structure architecture description language designed to facilitate fast-prototyping and tool...
Provided by University of Massachusetts Amherst
-
White Papers
Maximizing the Data Utility of a Data Archiving & Querying System Through Joint Coding and Scheduling
February 20, 2009, 12:00am PST
The authors study a joint scheduling and coding problem for collecting multi-snapshots spatial data in a resource constrained sensor network. Motivated by a distributed coding scheme for single...
Provided by University of Massachusetts Amherst
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White Papers
Connectivity in Cooperative Wireless Ad Hoc Networks
February 20, 2009, 12:00am PST
The connectivity and capacity of large ad hoc networks have been studied extensively under standard point-to-point physical layer assumptions. However, extensive recent research has demonstrated...
Provided by University of Massachusetts Amherst
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White Papers
A Design for Distributed Collaborative Adaptive Sensing of the Atmosphere
February 20, 2009, 12:00am PST
Consisting of a tightly meshed network of short range Doppler weather radars, Distributed Collaborative Adaptive Sensing (DCAS) represents a new paradigm in meteorological sensing. Rather than...
Provided by University of Massachusetts Amherst
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White Papers
Archipelago: Trading Address Space for Reliability and Security
February 23, 2009, 12:00am PST
Memory errors are a notorious source of security vulnerabilities that can lead to service interruptions, information leakage and unauthorized access. Because such errors are also difficult to...
Provided by University of Massachusetts Amherst
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White Papers
Strengthening Forensic Investigations of Child Pornography on P2P Networks
December 3, 2010, 12:00am PST
Measurements of the Internet for law enforcement purposes must be forensically valid. The authors examine the problems inherent in using various network- and application-level identifiers in the...
Provided by University of Massachusetts Amherst
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White Papers
Improved Network Consistency and Connectivity in Mobile and Sensor Systems
September 1, 2009, 12:00am PDT
Edge networks such as sensor, mobile, and disruption tolerant networks suffer from topological uncertainty and disconnections due to myriad of factors including limited battery capacity on client...
Provided by University of Massachusetts Amherst
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White Papers
Forensic Investigation of Peer-to-Peer File Sharing Networks
May 25, 2010, 12:00am PDT
The investigation of peer-To-peer (p2p) file sharing networks is now of critical interest to law enforcement. P2P networks are extensively used for sharing and distribution of contraband. The...
Provided by University of Massachusetts Amherst
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White Papers
Wage Changes, Establishment Growth, And The Effect Of Composition Bias
October 1, 2007, 12:00am PDT
The correlation between real wages and aggregate employment growth has been the object of several empirical studies conducted with both aggregate and micro data. Despite the new availability of...
Provided by University of Massachusetts Lowell
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White Papers
Broadcast Analysis for Large Cooperative Wireless Networks
September 1, 2009, 12:00am PDT
The capability of nodes to broadcast their message to the entire wireless network when nodes employ cooperation is considered. The authors employ an asymptotic analysis using an extended random...
Provided by University of Massachusetts Amherst
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White Papers
BenchLab: Benchmarking With Real Web Applications and Web Browsers
March 28, 2011, 12:00am PDT
Popular benchmarks such as TPC-W and RUBiS that are commonly used for evaluation by the systems community are no longer representative of modern Web applications. Many of these benchmarks lack the...
Provided by University of Massachusetts
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White Papers
MPCS: Mobile-Phone Based Patient Compliance System for Chronic Illness Care
June 4, 2009, 12:00am PDT
More than 100 million Americans are currently living with at least one chronic health condition and expenditures on chronic diseases account for more than 75 percent of the $2.3 trillion cost of...
Provided by University of Massachusetts Lowell
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White Papers
Employment Effects Under Planned Changes To The EPA's Air Pollution Rules
February 1, 2011, 12:00am PST
The U.S. electric power sector is changing and modernizing in response to societal and market forces. Power companies face a business imperative to meet increasing pressures for cleaner, more...
Provided by University of Massachusetts
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White Papers
Financial Stress And Asymmetric Financial Decisions
December 1, 2010, 12:00am PST
Building wealth requires saving, borrowing, and investing. These decisions may depend on stress due to the lack of financial security (low financial assets). Stress should influence personal...
Provided by University of Massachusetts
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White Papers
Generating Jobs Through State Employer Tax Credits: Is There A Better Way?
April 6, 2010, 12:00am PDT
The Governors of Massachusetts, Connecticut, Rhode Island and several other states have recently proposed employer tax credits as measures to fight high unemployment in their states. Such policies...
Provided by University of Massachusetts
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White Papers
The Potential Revenue From Financial Transactions Taxes
December 1, 2009, 12:00am PST
The economic crisis of the last two years has led to serious concerns about the sharp growth in the federal government's fiscal deficit as well as the government's overall debt burden as a share...
Provided by University of Massachusetts
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White Papers
Have Differences In Credit Access Diminished In An Era Of Financial Market Deregulation?
August 1, 2010, 12:00am PDT
Over the past few decades, financial markets became increasingly deregulated and household debt expanded, sometimes rapidly. It is thus possible that greater deregulation led to improved credit...
Provided by University of Massachusetts
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White Papers
How Infrastructure Investments Support The U.S. Economy: Employment, Productivity And Growth
January 1, 2009, 12:00am PST
The United States system of civilian public infrastructure has deteriorated badly over the past generation. The breaching of New Orleans' water levees in 2005 in the wake of Hurricane Katrina and...
Provided by University of Massachusetts
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White Papers
Did Immigrants In The U.S. Labor Market Make Conditions Worse For Native Workers During The Great Recession?
January 1, 2011, 12:00am PST
Did the presence of immigrant workers in the United States labor market - including both documented and undocumented workers - significantly affect conditions for low-wage native workers during...
Provided by University of Massachusetts
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White Papers
The Structure Of Employment, Globalization, And Economic Crisis: Rethinking Contemporary Employment Dynamics With A Focus On The U.S. And Japan
November 1, 2010, 12:00am PDT
This paper explores the intersections between the current trajectory of globalization, changes to the structure of employment, and policies for maintaining opportunities for decent employment....
Provided by University of Massachusetts
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White Papers
Capital Controls And 21st Century Financial Crises: Evidence From Colombia And Thailand
January 1, 2010, 12:00am PST
In the run up to the financial crisis of 2007-2009 many developing nations fell victim to massive inflows of capital, capital that their financial systems found difficult to absorb. One of a...
Provided by University of Massachusetts
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