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Association for Computing Machinery
(6222 results)-
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SideSight: Multi-^Touch^ Interaction Around Small Devices
October 22, 2008, 12:00am PDT
Interacting with mobile devices using touch can lead to fingers occluding valuable screen real estate. For the smallest devices, the idea of using a touch-enabled display is almost wholly...
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What Level of Estimating Accuracy Does TCP Need and Can TCP Achieve
December 1, 2009, 12:00am PST
Accurate and effective estimation of TCP operating point impacts directly on TCP performance, especially in modern high-speed networks. This paper focuses on two crucial questions: In order to...
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Practical and Low-Overhead Masking of Failures of TCP-Based Servers
May 1, 2009, 12:00am PDT
This paper describes an architecture that allows a replicated service to survive crashes without breaking its TCP connections. The approach does not require modifications to the TCP protocol, to...
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Tracking the Power in an Enterprise Decision Support System
August 21, 2009, 12:00am PDT
Enterprises rely on decision support systems to influence critical business choices. At the same time, IT-related power costs are growing and are a key concern for enterprise executives. Yet,...
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Cloud Computing Security
November 13, 2009, 12:00am PST
Cloud computing is clearly one of today's most enticing technology areas due, at least in part, to its cost-efficiency and flexibility. However, despite the surge in activity and interest, there...
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Open Standards and Cloud Computing
July 28, 2009, 12:00am PDT
At KDD-2009 in Paris, a panel on open standards and cloud computing addressed emerging trends for data mining applications in science and industry. This report summarizes the answers from a...
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The Delay-Friendliness of TCP
June 6, 2008, 12:00am PDT
TCP has traditionally been considered unfriendly for real-time applications. Nonetheless, popular applications such as Skype use TCP since UDP packets cannot pass through many NATs and firewalls....
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Safe and Effective Fine-Grained TCP Retransmissions for Datacenter Communication
August 21, 2009, 12:00am PDT
This paper presents a practical solution to a problem facing high-fan-in, high-bandwidth synchronized TCP workloads in datacenter Ethernets - the TCP incast problem. In these networks, receivers...
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Reflections on the TCP Macroscopic Model
November 12, 2008, 12:00am PST
The prevailing paradigm, uniform congestion control algorithms interacting with simple network devices, was absolutely the correct model when the Internet was in its in-fancy. Today, there is too...
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Social Spam Detection
April 21, 2009, 12:00am PDT
The popularity of social bookmarking sites has made them prime targets for spammers. Many of these systems require an administrator's time and energy to manually filter or remove spam. This paper...
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Nullification Test Collections for Web Spam and SEO
April 21, 2009, 12:00am PDT
Research in the area of adversarial information retrieval has been facilitated by the availability of the UK-2006/UK-2007 collections, comprising crawl data, link graph, and spam labels. However,...
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Verifying Dereference Safety Via Expanding-Scope Analysis
July 24, 2008, 12:00am PDT
This paper addresses the challenging problem of verifying the safety of pointer dereferences in real Java programs. The paper provides an automatic approach to this problem based on a sound...
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Visualization Annotation at Internet Scale
April 10, 2008, 12:00am PDT
Visualization annotation allows users to communicate within a visualization as opposed to outside it. While effective in research settings, the technique has not found a home on today's social...
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Constructing Comprehensive Summaries of Large Event Sequences
August 27, 2008, 12:00am PDT
Event sequences capture system and user activity over time. Prior research on sequence mining has mostly focused on discovering local patterns. Though interesting, these pat-terns reveal local...
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Generating Precise and Concise Procedure Summaries
January 12, 2008, 12:00am PST
This paper presents a framework for generating procedure summaries that are precise - applying the summary in a given context yields the same result as re-analyzing the procedure in that context,...
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Deriving Linearizable Fine-Grained Concurrent Objects
June 13, 2008, 12:00am PDT
Practical and efficient algorithms for concurrent data structures are difficult to construct and modify. Algorithms in the literature are often optimized for a specific setting, making it hard to...
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Disk Scrubbing Versus Intra-Disk Redundancy for High-Reliability RAID Storage Systems
June 6, 2008, 12:00am PDT
Two schemes proposed to cope with unrecoverable or latent media errors and enhance the reliability of RAID systems are examined. The first scheme is the established, widely used disk scrubbing...
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A Data Mining Case Study: Analytics-Driven Solutions for Customer Targeting and Sales Force Allocation
August 15, 2007, 12:00am PDT
Improving sales force productivity is a key strategic priority to drive corporate revenue growth. Sales professionals need to be able to easily identify new sales prospects, and sales executives...
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Accessing the Deep Web: When Good Ideas Go Bad
October 23, 2008, 12:00am PDT
Prevailing wisdom assumes that there are well-defined, effective and efficient methods for accessing Deep Web content. Unfortunately, there are a host of technical and non-technical factors that...
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Seeing Is Retrieving: Building Information Context From What the User Sees
January 16, 2008, 12:00am PST
As the user's document and application workspace grows more diverse, supporting personal information management becomes increasingly important. This trend toward diversity renders it difficult to...
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Whitepapers
Collaborative Location and Activity Recommendations With GPS History Data
April 30, 2010, 12:00am PDT
As the mobile devices with positioning function, such as GPS phones, become more and more popular, people now are able to know their locations easily. Based on these location data, various...
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Cross-Domain Activity Recognition
October 3, 2009, 12:00am PDT
In activity recognition, one major challenge is huge manual effort in labeling when a new domain of activities is to be tested. In this paper, the authors ask an interesting question: can the...
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Domain-Constrained Semi-Supervised Mining of Tracking Models in Sensor Networks
August 15, 2007, 12:00am PDT
Accurate localization of mobile objects is a major research problem in sensor networks and an important data mining application. Specifically, the localization problem is to determine the location...
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Joint Learning User's Activities and Profiles From GPS Data
November 3, 2009, 12:00am PST
As the GPS-enabled mobile devices become extensively available, the authors are now given a chance to better understand human behaviors from a large amount of the GPS trajectories representing the...
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PAL: Propagation-Aware Anomaly Localization for Cloud Hosted Distributed Applications
October 23, 2011, 12:00am PDT
Distributed applications running inside cloud are prone to performance anomalies due to various reasons such as insufficient resource allocations, unexpected workload increases, or software bugs....
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LIFEGUARD: Practical Repair of Persistent Route Failures
August 17, 2012, 12:00am PDT
The Internet was designed to always find a route if there is a policy-compliant path. However, in many cases, connectivity is disrupted despite the existence of an underlying valid path. The...
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FairCloud: Sharing the Network in Cloud Computing
August 17, 2012, 12:00am PDT
The network, similar to CPU and memory, is a critical and shared resource in the cloud. However, unlike other resources, it is neither shared proportionally to payment, nor do cloud providers...
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Making Middleboxes Someone Else's Problem: Network Processing as a Cloud Service
August 17, 2012, 12:00am PDT
Modern enterprises almost ubiquitously deploy middlebox processing services to improve security and performance in their networks. Despite this, the authors find that today's middlebox...
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UCLinux: A Linux Security Module for Trusted-Computing-Based Usage Controls Enforcement
November 2, 2007, 12:00am PDT
Usage controls allow the distributor of some information to limit how recipients of that information may use it. The Trusted Computing Group has standardized Trusted Platform Modules (TPMs) that...
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Linux Kernel Integrity Measurement Using Contextual Inspection
November 2, 2007, 12:00am PDT
This paper introduces the Linux Kernel Integrity Monitor (LKIM) as an improvement over conventional methods of software integrity measurement. LKIM employs contextual inspection as a means to more...
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Cloud Computing: An Overview
June 9, 2009, 12:00am PDT
Google, Yahoo, Amazon, and others have built large, purpose-built architectures to support their applications and taught the rest of the world how to do massively scalable architectures to support...
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Controlling Data in the Cloud: Outsourcing Computation Without Outsourcing Control
November 13, 2009, 12:00am PST
Cloud computing is clearly one of today's most enticing technology areas due, at least in part, to its cost-efficiency and flexibility. However, despite the surge in activity and interest, there...
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Spatio-Textual Spreadsheets: Geotagging Via Spatial Coherence
November 6, 2009, 12:00am PST
The spatio-textual spreadsheet is a conventional spreadsheet where spatial attribute values are specified textually. Techniques are presented to automatically find the textually-specified spatial...
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Web Spam Identification Through Language Model Analysis
March 23, 2009, 12:00am PDT
Nowadays, Web Spam is one of the main problems of the search engines because the quality of their search results has been degraded by the methods used by spammers. During recent years there have...
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Additive Guarantees for Degree Bounded Directed Network Design
May 20, 2008, 12:00am PDT
The problem of finding a minimum spanning tree that satisfies given degree bounds on vertices has received much attention in the field of combinatorial optimization recently. This problem was...
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Interactive WiFi Connectivity for Moving Vehicles
August 22, 2008, 12:00am PDT
The author asks if the ubiquity of WiFi can be leveraged to provide cheap connectivity from moving vehicles for common applications such as Web browsing and VoIP. Driven by this question, the...
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Improving Compiler-Runtime Separation With XIR
March 19, 2010, 12:00am PDT
Intense research on virtual machines has highlighted the need for flexible software architectures that allow quick evaluation of new design and implementation techniques. The interface between the...
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Server-Side Detection of Malware Infection
September 11, 2009, 12:00am PDT
The paper reviews the intertwined problems of malware and online fraud, and argues that the fact that service providers often are financially responsible for fraud causes a relative lack of...
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pBMDS: A Behavior-Based Malware Detection System for Cellphone Devices
March 24, 2010, 12:00am PDT
Computing environments on cellphones, especially smartphones, are becoming more open and general-purpose, thus they also become attractive targets of malware. Cellphone malware not only causes...
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Machine Learning-Based Prefetch Optimization for Data Center Applications
November 20, 2009, 12:00am PST
The dynamic nature of data centers, which sees frequent release of applications and upgrading of servers, makes it difficult to fine tune their performance. Yet, the significance of performance...
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Minimum-Latency Aggregation Scheduling in Wireless Sensor Networks Under Physical Interference Model
October 21, 2010, 12:00am PDT
Minimum-Latency Aggregation Scheduling (MLAS) is a problem of fundamental importance in wireless sensor networks. There however has been very little effort spent on designing algorithms to achieve...
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PeerPress: Utilizing Enemies' P2P Strength Against Them
October 18, 2012, 12:00am PDT
The authors propose a new, active scheme for fast and reliable detection of P2P malware by exploiting the enemies' strength against them. Their new scheme works in two phases: host-level dynamic...
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Multicast Scheduling for Scalable Video Streaming in Wireless Networks
February 23, 2010, 12:00am PST
The authors consider how relatively simple extensions of popular channel-aware schedulers can be used to multicast scalable video streams in high speed radio access networks. To support the...
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TinyCasper: A Privacy-Preserving Aggregate Location Monitoring System in Wireless Sensor Networks
June 12, 2008, 12:00am PDT
This paper presents a privacy-preserving aggregate location monitoring system, namely, TinyCasper, in which users can monitor moving objects in Wireless Sensor Networks while preserving their...
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Towards Location-Based Social Networking Services
November 2, 2010, 12:00am PDT
Social networking applications have become very important web services that provide Internet-based platforms for their users to interact with their friends. With the advances in the location-aware...
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MobiFeed: A Location-Aware News Feed System for Mobile Users
November 9, 2012, 12:00am PST
A location-aware news feed system enables mobile users to share geo-tagged user-generated messages, e.g., a user can receive nearby messages that are the most relevant to her. In this paper, the...
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Casper: Query Processing for Location Services without Compromising Privacy
January 1, 2013, 12:00am PST
In this paper, the authors present a new privacy-aware query processing framework Capser in which mobile and stationary users can obtain snapshot and/or continuous location-based services without...
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Robust Group Key Agreement Using Short Broadcasts
November 2, 2007, 12:00am PDT
A Group Key Agreement protocol (GKA) allows a set of players to establish a shared secret key which can be used to se-cure a subsequent communication. Several efficient constant-round GKAs have...
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Self-Healing in Unattended Wireless Sensor Networks
March 1, 2010, 12:00am PST
Wireless Sensor Networks (WSNs) appeal to a wide range of applications that involve monitoring of various physical phenomena. However, WSNs are subject to many threats. In particular, lack of...
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Network Coding to Combat Packet Loss in Underwater Networks
September 1, 2010, 12:00am PDT
Channel variability and a high level of ambient noise lead to significant probability of packet loss in many underwater networks. Techniques based on acknowledgements and re-transmissions (such as...
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Sampling Based Algorithms for Quantile Computation in Sensor Networks
June 16, 2011, 12:00am PDT
Sensor networks are large ad-hoc networks of interconnected, battery powered, wireless sensors. They are now being widely deployed to monitor diverse physical variables, such as temperature,...
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Locating in Fingerprint Space: Wireless Indoor Localization With Little Human Intervention
August 26, 2012, 12:00am PDT
Indoor localization is of great importance for a range of pervasive applications, attracting many research efforts in the past decades. Most radio-based solutions require a process of site survey,...
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Choice as a Principle in Network Architecture
August 17, 2012, 12:00am PDT
There has been a great interest in defining a new network architecture that can meet the needs of a future Internet. One of the main challenges in this context is how to realize the many different...
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Runtime Efficient Event Scheduling in Multi-Threaded Network Simulation
March 25, 2011, 12:00am PDT
Developing an efficient parallel simulation framework for multiprocessor systems is hard. A primary concern is the considerable amount of parallelization overhead imposed on the event handling...
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Effective Service Capacity Analysis of Opportunistic Multi-Carrier OFDMA Systems
October 25, 2012, 12:00am PDT
Exact queuing-theoretic modeling of wireless systems is tough due to the complex service processes that arise from the interaction of the wireless channel with state-of-the-art signal processing...
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Software Energy Optimization Through Fine-Grained Function-Level Voltage and Frequency Scaling
October 12, 2012, 12:00am PDT
This paper presents a methodology and a tool-chain to perform estimation and optimization of the energy consumption associated to software execution on tiny embedded systems. The estimation phase...
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Enabling Ultra-Low Power Operation in High-End Wireless Sensor Networks Nodes
October 12, 2012, 12:00am PDT
This paper presents a prototype hardware/software architecture for minimizing energy consumption on high-end microcontrollers, while simplifying the development of applications providing a...
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NBTI-Aware Design of NoC Buffers
January 23, 2013, 12:00am PST
Network-on-Chips (NoC) play a central role in determining performance and reliability in current and future multi-core architectures. Continuous scaling of CMOS technology enable widespread...
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Low-Power Wireless Bus
November 9, 2012, 12:00am PST
The authors present the Low-Power Wireless Bus (LWB), a communication protocol that supports several traffic patterns and mobile nodes immersed in static infrastructures. LWB turns a multi-hop...
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SniffMob: Inferring Human Contact Patterns Using Wireless Devices
June 11, 2009, 12:00am PDT
The size of existing data sets regarding human mobility and person-to-person contact has been limited by the labor-intensive nature of the data collection techniques employed. In this paper, the...
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Enhancing Tor's Performance Using Real-Time Traffic Classification
October 18, 2012, 12:00am PDT
Tor is a low-latency anonymity-preserving network that enables its users to protect their privacy online. It consists of volunteer-operated routers from all around the world that serve hundreds of...
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Changing of the Guards: A Framework for Understanding and Improving Entry Guard Selection in Tor
October 15, 2012, 12:00am PDT
Tor is the most popular low-latency anonymity overlay network for the Internet, protecting the privacy of hundreds of thousands of people every day. To ensure a high level of security against...
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Energy Harvesting Enabled Wireless Sensor Networks: Energy Model and Battery Dimensioning
May 15, 2012, 12:00am PDT
Wireless Sensor Networks (WSN) present a pending challenge for a complete deployability due to energy requirements. The Self-Powered WSN approach aims to extend the sensor node life by means of...
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Fault Injection on a Large-Scale Network Testbed
November 11, 2011, 12:00am PST
In the real Internet, various types of problems are encountered. Before integrating new technologies into the Internet, developers should understand the behavior of these technologies in the event...
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Making the Best of Two Worlds: A Framework for Hybrid Experiments
August 22, 2012, 12:00am PDT
In this paper, the authors present the design and implementation of a framework for hybrid experiments that integrates a real-world wireless testbed with a wireless network emulation testbed. The...
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Performance Evaluation of DTN Implementations on a Large-Scale Network Emulation Testbed
August 22, 2012, 12:00am PDT
In this paper, the authors present a series of experiments that evaluate the performance of two DTN implementations, DTN2 and IBR-DTN, in urban mobility scenarios. The experiments were carried out...
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A First Look at Cellular Machine-to-Machine Traffic - Large Scale Measurement and Characterization
June 15, 2012, 12:00am PDT
Cellular network based Machine-To-Machine (M2M) communication is fast becoming a market-changing force for a wide spectrum of businesses and applications such as telematics, smart metering,...
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Obtaining In-Context Measurements of Cellular Network Performance
November 16, 2012, 12:00am PST
Network service providers, and other parties, require an accurate understanding of the performance cellular networks deliver to users. In particular, they often seek a measure of the network...
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Can You GET Me Now? Estimating the Time-to-First-Byte of HTTP Transactions With Passive Measurements
November 16, 2012, 12:00am PST
Cellular network operators have a compelling interest to monitor HTTP transaction latency because it is an important component of the user experience. Existing techniques to monitor latency...
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Smart Data Structures: An Online Machine Learning Approach to Multicore Data Structures
June 18, 2011, 12:00am PDT
As multicores become prevalent, the complexity of programming is skyrocketing. One major difficulty is efficiently orchestrating collaboration among threads through shared data structures....
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The New Frontier of Communications Research: Smart Grid and Smart Metering
April 15, 2010, 12:00am PDT
This paper discusses some of the challenges and opportunities of communications research in the area of smart grids and smart metering. It is clear that the communications research community has...
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FANGS: High Speed Sequence Mapping for Next Generation Sequencers
March 26, 2010, 12:00am PDT
Next Generation Sequencing machines are generating millions of short DNA sequences (reads) everyday. There is a need for efficient algorithms to map these sequences to the reference genome to...
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Sentiment Identification by Incorporating Syntax, Semantics and Context Information
October 8, 2012, 12:00am PDT
Understanding the sentiment of sentences allows users to summarize opinions which could help people make informed decisions. All of the state-of-the-art algorithms perform well on individual...
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Crowdsourcing Recommendations From Social Sentiment
August 12, 2012, 12:00am PDT
In this paper, the authors investigate an innovative recommendation system by incorporating relevant social opinion and sentiment information. Their recommendation system, a powerful application...
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User-Interest Based Community Extraction in Social Networks
August 12, 2012, 12:00am PDT
The rapid evolution of modern social networks motivates the design of networks based on users' interests. Using popular social media such as Facebook and Twitter, the authors show that this new...
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CluChunk: Clustering Large Scale User-Generated Content Incorporating Chunklet Information
August 12, 2012, 12:00am PDT
The exponential rise of online content in the form of blogs, microblogs, forums, and multimedia sharing sites has raised an urgent demand for efficient and high-quality text clustering algorithms...
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Algorithm-Based Fault Tolerance for Dense Matrix Factorizations
February 29, 2012, 12:00am PST
Dense matrix factorizations, such as LU, Cholesky and QR, are widely used for scientific applications that require solving systems of linear equations, eigenvalues and linear least squares...
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CloudFilter: Practical Control of Sensitive Data Propagation to the Cloud
October 19, 2012, 12:00am PDT
A major obstacle for the adoption of cloud services in enterprises is the potential loss of control over sensitive data. Companies often have to safeguard a subset of their data because it is...
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Experiences Using Cloud Computing for a Scientific Workflow Application
June 8, 2011, 12:00am PDT
Clouds are rapidly becoming an important platform for scientific applications. In this paper, the authors describe their experiences running a scientific workflow application in the cloud. The...
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On Pending Interest Table in Named Data Networking
October 30, 2012, 12:00am PDT
Internet has witnessed its paramount function transition from host-to-host communication to content dissemination. Named Data Net-working (NDN) and Content-Centric Networking (CCN) emerge as a...
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