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Information Technology

Data & informatics

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Displaying 376 - 400 of 661

Confidence Regions for Parameters of Linear Models

April 1, 2010
Author(s)
Andrew L. Rukhin
A method is suggested for constructing a conservative confidence region for the parameters of a general linear model. In meta-analytical applications, when the results of independent but heterogeneous studies are to be combined, this region can be employed

AN AUTOMATIC OVERLAP-BASED CELL TRACKING SYSTEM

February 26, 2010
Author(s)
Joe Chalfoun, Antonio Cardone, Alden A. Dima, Michael Halter, Daniel P. Allen
In order to facilitate the extraction of quantitative data from live cell image sets, automated image analysis methods are needed. This paper presents an overlap-based cell tracking algorithm that has the ability to track cells across a set of time-lapse

Asynchronous Cooperative MIMO Systems using A Linear Dispersion Structure

February 2, 2010
Author(s)
Hamid Gharavi
In this treatise, we propose a novel family of Asynchronous Cooperative Linear Dispersion Codes (ACLDCs),which is capable of maintaining full diversity in cooperative scenarios even at the presence of asynchronous reception. The linear dispersion structure

Overlap-Based Cell Tracker

February 2, 2010
Author(s)
Joe Chalfoun, Antonio Cardone, Alden A. Dima, Michael Halter, Daniel P. Allen
In order to facilitate the extraction of quantitative data from live cell image sets, automated image analysis methods are needed. This paper presents an introduction to the general principle of an overlap cell tracking software developed by NIST. This

View subspaces for indexing and retrieval of 3D models

January 21, 2010
Author(s)
Helin Dutagaci, Afzal A. Godil, Bulent Sankur, Yucel Yemez
View-based indexing schemes for 3D object retrieval is gaining popularity since they provide good retrieval results. These schemes are coherent with the theory that humans recognize objects based on their 2D appearances. The view-based techniques also

Overview of the TREC 2008 Blog Track

January 12, 2010
Author(s)
Ian M. Soboroff, Iadh Ounis, Craig Macdonald
The Blog track explores the information seeking behaviour in the blogosphere. The track was introduced in 2006 [1], with a main pilot search task, namely the opinion-finding task. In TREC 2007 [2], the track investigated two main tasks inspired by the

A Hybrid Frame Concealment Algorithm for H.264/AVC

January 5, 2010
Author(s)
Hamid Gharavi
In packet-based video transmissions, packets loss due to channel errors may result in the loss of the whole video frame. Recently, many error concealment algorithms have been proposed in order to combat channel errors, however most of the existing

EDITOR IN CHIEF (EIC) MESSAGE

January 1, 2010
Author(s)
Hamid Gharavi
This Editor In Chief's (EIC) message is expected to appear in the January, 2010 issue of the IEEE Transactions on CAS for Video Technology (TCSVT). The editorial team will be under the leadership of the new EIC for a period of two years.

Overview of the TREC 2008 Enterprise Track

January 1, 2010
Author(s)
Ian M. Soboroff, Krisztian Balog, Nick Craswell, Arjen de Vries, Paul Thomas, Peter Bailey
The goal of the enterprise track is to conduct experiments with enterprise data that reflect the experiences of users in real organizations. This year, we continued with the CERC collection introduced in TREC 2007. Topics were developed in conjunction with

Text Retrieval Conference (TREC)

December 9, 2009
Author(s)
Ellen M. Voorhees
This article summarizes the history, results, and impact of the Text Retrieval Conference (TREC), a workshop series designed to support the information retrieval community by building the infrastructure necessary for large-scale evaluation of retrieval

The TRECVid 2008 Event Detection Evaluation

December 9, 2009
Author(s)
Jonathan G. Fiscus, John S. Garofolo, Paul D. Over, Martial Michel, Richard T. Rose
This paper is a summary of the 2008 TRECVid Event Detection evaluation. TRECVid is a laboratory-style evaluation that aims to model real world situations or significant component tasks. The event detection evaluation was organized to address detection of a

Trends in Multimedia Communications Over Mobile Networks

November 3, 2009
Author(s)
Hamid Gharavi
Increasing demand for high quality multimedia services has been a driving factor in the technological evolution of high bandwidth wireless/mobile communications systems and standards. The most challenging aspect is the support of higher quality video

Creating a web-scale video collection for research

October 23, 2009
Author(s)
Paul D. Over, George M. Awad, Alan Smeaton, Colum Foley, James Lanagan
This paper begins by considering a number of important design questions for a web-scale, widely available, multimedia test collection intended to support long-term scientific evaluation and comparison of content-based video analysis and exploitation

Climbing Mount Probable: Mutation as a Cause of Nonrandomness in Evolution

October 1, 2009
Author(s)
Arlin B. Stoltzfus
Genomes differ systematically in Guanine-plus-Cytosine (GC) content. GC-rich genomes encode proteins enriched in amino acids with GC-rich codons, such as Glycine (with codons GGT, GGC, GGA, GGG), while AT-rich genomes are enriched in amino acids with AT

Evaluating Speech Translation Systems: Applying SCORE to TRANSTAC Technologies

September 29, 2009
Author(s)
Craig I. Schlenoff, Brian A. Weiss, Michelle P. Steves, Gregory A. Sanders, Frederick M. Proctor, Ann M. Virts
The Spoken Language Communication and Translation System for Tactical Use (TRANSTAC) program is a Defense Advanced Research Projects Agency (DARPA) advanced technology research and development program. The goal of the TRANSTAC program is to demonstrate

Improving Data Quality in Embedded Sensor Systems for APC

September 28, 2009
Author(s)
Julien M. Amelot, YaShian Li-Baboud
Achieving next-generation factory (NGF) goals has been an industry challenge for APC applications to acquire a sufficient level of data quality to maximize the benefits of automation. For example, it is difficult to get accurate timestamps because sensor

Overview of the TAC 2008 Update Summarization Task

September 4, 2009
Author(s)
Hoa T. Dang, Karolina K. Owczarzak
The summarization track at the Text Analysis Conference (TAC) is a direct continuation of the Document Understanding Conference (DUC) series of workshops, focused on providing common data and evaluation framework for research in automatic summarization. In

Facial Shape Analysis and Sizing System

July 24, 2009
Author(s)
Afzal A. Godil
The understanding of shape and size of the human head and faces is vital for design of facial wear products, such as respirators, helmets, eyeglasses and for ergonomic studies. 3D scanning is used to create 3D databases of thousands of humans from

Is spam an issue for opinionated blog post search?

July 19, 2009
Author(s)
Ian M. Soboroff, Craig Macdonald, Iadh Ounis
In opinion-finding, the retrieval system is tasked with re- trieving not just relevant documents, but those that also express an opinion towards the query target entity. This task has been studied in the context of the blogosphere by groups participating
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