Ken Chen

VarScan: variant detection in massively parallel sequencing of individual and pooled samples (2009)

Koboldt, Daniel C., Chen, Ken, Wylie, Todd, Larson, David E., McLellan, Michael D., Mardis, Elaine R., ...

Summary: Massively parallel sequencing technologies hold incredible promise for the study of DNA sequence variation, particularly the identification of variants affecting human disease. The...

Somatic mutations affect key pathways in lung adenocarcinoma (2008)

Ding, Li, Getz, Gad, Wheeler, David A., Mardis, Elaine R., McLellan, Michael D., Cibulskis, Kristian, ...

Determining the genetic basis of cancer requires comprehensive analyses of large collections of histopathologically well- classified primary tumours. Here we report the results of a collaborative...

dependent (2008)

Ken Chen, Jennifer S. Cole

A factored language model for prosody

LANDMARK-BASED SPEECH RECOGNITION: REPORT OF THE 2004 (2008)

Johns Hopkins, Summer Workshop, Mark Hasegawa-johnson, James Baker, Sarah Borys, Ken Chen, ...

Three research prototype speech recognition systems are described, all of which use recently developed methods from artificial intelligence (specifically support vector machines, dynamic Bayesian...

On The Design Of A New Scalable Reliable Multicast Transport Protocol (2007)

Stephan Block, Ken Chen, Ahmed Serhrouchni, Ecole Nationale Superieure, M. H. Sherif

This document presents the design and performance evaluation of a scalable, reliable, oneto -many multicast transport protocol. We show through simulation that it scales extremely well to a very big...

Some Design Issues of SRMTP, a Scalable Reliable Multicast Transport Protocol (2007)

Stephan Block, Ken Chen, Philippe Godlewski, Ahmed Serhrouchni

. In this paper, we propose a transport layer protocol for oneto -many multicast that is designed to have good scalability properties in large receiver groups and provides reliable transmission....

An Approximate Analysis of Waiting Time in Multi-classes M=G=1=:=EDF Queues (2007)

Ken Chen, Laurent Decreusefond

Abstract This paper deals with non-preemptive and work-conserving M=G=1 queues ordered by the Earliest-Deadline-First (EDF) queueing discipline. The EDF discipline is more and more used for handling...

On the detection of functionally coherent groups of protein domains with an extension to protein annotation (2007)

McLaughlin, William A, Chen, Ken, Hou, Tingjun, Wang, Wei

Abstract Background Protein domains coordinate to perform multifaceted cellular functions, and domain combinations serve as the functional building blocks of the cell. The available methods to...

PolyScan: An automatic indel and SNP detection approach to the analysis of human resequencing data (2007)

Chen, Ken, McLellan, Michael D., Ding, Li, Wendl, Michael C., Kasai, Yumi, Wilson, Richard K., ...

Small insertions and deletions (indels) and single nucleotide polymorphisms (SNPs) are common genetic variants that are thought to be associated with a wide variety of human diseases. Owing to the...

Inducible overexpression of wild-type prion protein in the muscles leads to a primary myopathy in transgenic mice. (2007)

Huang, Shenghai, Liang, Jingjing, Zheng, Mengjie, Li, Xinyi, Wang, Meiling, Wang, Ping, ...

The prion protein (PrP) level in muscle has been reported to be elevated in patients with inclusion-body myositis, polymyositis, dermatomyositis, and neurogenic muscle atrophy, but it is not clear...

Prosodic Hierarchy as an Organizing Framework for the Sources of Context in Phone-Based and Articulatory-Feature-Based Speech Recognition (2007)

Mark Hasegawa-johnson, Jennifer Cole, Ken Chen, Partha Lal, Amit Juneja, Taejin Yoon, ...

Automatic speech recognition (ASR) is like solving a crossword puzzle. Context at every level is used to resolve ambiguity: the more context we can bring to bear, the higher will be the accuracy of...

Computational Analysis and Prediction of the Binding Motif and Protein Interacting Partners of the Abl SH3 Domain (2006)

Tingjun Hou, Ken Chen, William A. McLaughlin, Benzhuo Lu, Wei Wang

Protein-protein interactions, particularly weak and transient ones, are often mediated by peptide recognition domains, such as Src Homology 2 and 3 (SH2 and SH3) domains, which bind to specific...

Performances des mécanismes de robustesse de H.264/AVC sur un lien sans fil (2006)

Benayoune, Salim, Achir, Nadjib, Boussetta, Khaled, Chen, Ken

Le standard H.264/AVC suscite depuis quelque temps un intérêt croissant de la part de la communauté réseau. D'un point de vue réseau, le principal apport de ce standard réside dans...

Une nouvelle approche pour la gestion de flux temps réels basée sur l'algorithme EDF (2006)

Fawaz, W., Chen, Ken

Pour répondre aux exigences temporelles de flux temps réels, beaucoup de techniques d'ordonnancement de paquets ont été proposées dans la littérature, pour être utilisées au niveau de...

Performances des mécanismes de robustesse de H.264/AVC sur un lien sans fil (2006)

Benayoune, Salim, Achir, Nadjib, Boussetta, Khaled, Chen, Ken

Le standard H.264/AVC suscite depuis quelque temps un intérêt croissant de la part de la communauté réseau. D'un point de vue réseau, le principal apport de ce standard réside dans...

Une nouvelle approche pour la gestion de flux temps réels basée sur l'algorithme EDF (2006)

Fawaz, W., Chen, Ken

Pour répondre aux exigences temporelles de flux temps réels, beaucoup de techniques d'ordonnancement de paquets ont été proposées dans la littérature, pour être utilisées au niveau de...

Efficient classification of multilabel and imbalanced data using min-max modular classifiers (2006)

Ken Chen, Bao-liang Lu

Abstract — Many real-world applications, such as text categorization and subcellular localization of protein sequences, involve multi-label classification with imbalanced data. In this paper, we...

City Out of Breath (2005)

Chen, Ken.

Manoa - Volume 17, Number 1, 2005

Some lessons from an experience with active video flow regulation (2005)

Chen, Ken, Hammi, Rim

People are paying more and more attention to network infrastructures which are capable of dynamic code deployment and reconfiguration, in order to deal with the increase of network complexity both on...

An automatic prosody labeling system using ANN-based syntacticprosodic model and GMM-based acoustic-prosodic model (2004)

Ken Chen, Mark Hasegawa-johnson, Aaron Cohen

Automatic prosody labeling is important for both speech synthesis and automatic speech understanding. Humans use both syntactic cues and acoustic cues to develop their prediction of prosody for a...

How Prosody Improves Word Recognition (2004)

Ken Chen, Mark Hasegawa-johnson

recognition. In this paper, we provide a schematic view describing how prosody can help word recognition. We provide our view in terms of a Bayesian network that models the stochastic dependence...

Multimodal Dialog Systems Research at Illinois (2003)

Levinson, Stephen E., Huang, Thomas S., Hasegawa-Johnson, Mark A., Chen, Ken, Chu, Stephen

Multimodal dialog systems research at the University of Illinois seeks to develop algorithms and systems capable of robustly extracting and adaptively combining information about the speech and...

Improving the Robustness of Prosody Dependent Language Modeling Based on Prosody Syntax Dependence (2003)

Ken Chen, Mark Hasegawa-johnson

This paper presents a novel approach that improves the robustness of prosody dependent language modeling by leveraging the dependence between prosody and syntax. A prosody dependent language model...

Automatic Recognition of Pitch Movements Using Time-Delay Recursive Neural Network (2003)

Sung-suk Kim, Mark Hasegawa-johnson, Ken Chen

This paper proposes a novel method for the automatic recognition of pitch accents with no prior knowledge about the phonetic content of the signal (no knowledge of word or phoneme boundaries or of...

An intonational phrase boundary and pitch accent dependent speech recognizer (2003)

Ken Chen, Mark Hasegawa-johnson, Sung-suk Kim

Does prosody help word recognition? In this paper, we propose a novel probabilistic framework in which word and phoneme are dependent on prosody in a way that improves word recognition. We describe...

Adaptive Estimation of Information Values in Continuous Decision Making and Control of Remotely Piloted Vehicles (2002)

Steeb, Randall, Chen, Ken, Freedy, Amos

This report describes research and development centered on evaluation of information needs in supervision of remotely piloted vehicles. The selection of information for transmission and display is a...

An Evaluation of Using Mutual Information for Selection of Acoustic-Features Representation of Phonemes for Speech Recognition (2002)

Mohamed Kamal Omar, Ken Chen, Mark Hasegawa-johnson

This paper addresses the problem of finding a subset of the acoustic feature space that best represents the phoneme set used in a speech recognition system. A maximum mutual information approach is...

A study of data cryptography (2001)

Chen, Ken.

Facsimile of the author's original dissertation. Alternate pages blank. Includes bibliographical references.

Analysis and Modeling of Information Handling Tasks in Supervisory Control of Advanced Aircraft. (1998)

Chu,Yee-yeen, Chen,Ken, Clark,Cynthia, Freedy,Amos

The problems addressed in this study stem from the increasing supervisory loads imposed on the operator in airborne system operations. Future aircraft will be characterized by high information loads,...

Generalized scheduling on a single machine in a real-time systems based on time value functions (1992)

Muhlethaler, Paul, Chen, Ken

Time value functions is a new concept for the description of real-time system. In such systems time value function (TVF) is associated to each task. The value of this function taken at time t gives...

Generalized scheduling on a single machine in a real-time systems based on time value functions (1992)

Muhlethaler, Paul, Chen, Ken

Time value functions is a new concept for the description of real-time system. In such systems time value function (TVF) is associated to each task. The value of this function taken at time t gives...

Generalized scheduling on a single machine in a real-time systems based on time value functions (1992)

Muhlethaler, Paul, Chen, Ken

Time value functions is a new concept for the description of real-time system. In such systems time value function (TVF) is associated to each task. The value of this function taken at time t gives...

Drosophila Myc is oncogenic in mammalian cells and plays a role in the diminutive phenotype

Schreiber-Agus, Nicole, Stein, David, Chen, Ken, Goltz, Jason S., Stevens, Leslie, DePinho, Ronald A.

Biochemical and biological activities of Myc oncoproteins are highly dependent upon their association with another basic region helix–loop–helix/leucine zipper (bHLH/LZ) protein, Max. Our...

Identification of Mammalian Sds3 as an Integral Component of the Sin3/Histone Deacetylase Corepressor Complex

Alland, Leila, David, Gregory, Shen-Li, Hong, Potes, Jason, Muhle, Rebecca, Lee, Hye-Chun, ...

Silencing of gene transcription involves local chromatin modification achieved through the local recruitment of large multiprotein complexes containing histone deacetylase (HDAC) activity. The...

Computational Analysis and Prediction of the Binding Motif and Protein Interacting Partners of the Abl SH3 Domain

Hou, Tingjun, Chen, Ken, McLaughlin, William A, Lu, Benzhuo, Wang, Wei

Protein-protein interactions, particularly weak and transient ones, are often mediated by peptide recognition domains, such as Src Homology 2 and 3 (SH2 and SH3) domains, which bind to specific...

Drosophila Myc is oncogenic in mammalian cells and plays a role in the diminutive phenotype

Schreiber-Agus, Nicole, Stein, David, Chen, Ken, Goltz, Jason S., Stevens, Leslie, DePinho, Ronald A.

Biochemical and biological activities of Myc oncoproteins are highly dependent upon their association with another basic region helix–loop–helix/leucine zipper (bHLH/LZ) protein, Max. Our...

Identification of Mammalian Sds3 as an Integral Component of the Sin3/Histone Deacetylase Corepressor Complex

Alland, Leila, David, Gregory, Shen-Li, Hong, Potes, Jason, Muhle, Rebecca, Lee, Hye-Chun, ...

Silencing of gene transcription involves local chromatin modification achieved through the local recruitment of large multiprotein complexes containing histone deacetylase (HDAC) activity. The...

Computational Analysis and Prediction of the Binding Motif and Protein Interacting Partners of the Abl SH3 Domain

Hou, Tingjun, Chen, Ken, McLaughlin, William A, Lu, Benzhuo, Wang, Wei

Protein-protein interactions, particularly weak and transient ones, are often mediated by peptide recognition domains, such as Src Homology 2 and 3 (SH2 and SH3) domains, which bind to specific...

Inducible overexpression of wild-type prion protein in the muscles leads to a primary myopathy in transgenic mice

Huang, Shenghai, Liang, Jingjing, Zheng, Mengjie, Li, Xinyi, Wang, Meiling, Wang, Ping, ...

The prion protein (PrP) level in muscle has been reported to be elevated in patients with inclusion-body myositis, polymyositis, dermatomyositis, and neurogenic muscle atrophy, but it is not clear...

PolyScan: An automatic indel and SNP detection approach to the analysis of human resequencing data

Chen, Ken, McLellan, Michael D., Ding, Li, Wendl, Michael C., Kasai, Yumi, Wilson, Richard K., ...

Small insertions and deletions (indels) and single nucleotide polymorphisms (SNPs) are common genetic variants that are thought to be associated with a wide variety of human diseases. Owing to the...

Macrophage Migration Inhibitory Factor Promotes Colorectal Cancer

He, Xing-Xiang, Chen, Ken, Yang, Jun, Li, Xiao-Yu, Gan, Huo-Ye, Liu, Cheng-Yong, ...

A growing body of evidence implicates macrophage migration inhibitory factor (MIF) in tumorigenesis and metastasis. In this study, we investigated whether MIF expression was associated with...

Cell-permeable Tat-NBD peptide attenuates rat pancreatitis and acinus cell inflammation response

Long, You-Ming, Chen, Ken, Liu, Xue-Jin, Xie, Wen-Rui, Wang, Hui

AIM: To investigate the effects of Tat-NEMO-binding domain (NBD) peptide on taurocholate-induced pancreatitis and lipopolysaccharide (LPS)-stimulated AR42J acinus cells inflammatory response in rats.

Acetylation of EKLF Is Essential for Epigenetic Modification and Transcriptional Activation of the β-Globin Locus▿

Sengupta, Tanushri, Chen, Ken, Milot, Eric, Bieker, James J.

Posttranslational modifications of transcription factors provide alternate protein interaction platforms that lead to varied downstream effects. We have investigated how the acetylation of EKLF plays...