%0 Report %D 2008 %T Generalizing Word Lattice Translation %A Dyer,Christopher %A Muresan,Smaranda %A Resnik, Philip %K *MACHINE TRANSLATION %K *STATISTICAL MACHINE TRANSLATION %K *WORD LATTICE TRANSLATION %K grammars %K HIERARCHICAL PHRASE-BASED MODELS %K linguistics %K MODELS %K STATISTICAL PROCESSES %X Word lattice decoding has proven useful in spoken language translation; we argue that it provides a compelling model for translation of text genres, as well. We extend lattice decoding to hierarchical phrase-based models, providing a unified treatment with phrase-based decoding by treating lattices as a case of weighted finite-state automata. In the process, we resolve a significant complication that lattice representations introduce in reordering models. Our experiments evaluating the approach demonstrate substantial gains for Chinese-English and Arabic-English translation. %I Instititue for Advanced Computer Studies, Univ of Maryland, College Park %8 2008/02// %G eng %U http://stinet.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA481994 %0 Report %D 2006 %T Vehicle Fingerprinting Using Drive-By Sounds %A Cevher, V. %A Chellapa, Rama %A Gurbuz, A.C. %A Shah, F. %A McClellan, J.H. %K *ACOUSTIC DETECTORS %K *GROUND VEHICLES %K *SIGNAL PROCESSING %K ACOUSTIC DETECTION AND DETECTORS %K AMPLITUDE %K Interference %K PASSIVE SYSTEMS %K spatial distribution %K STATISTICAL PROCESSES %K SURFACE TRANSPORTATION AND EQUIPMENT %K SYMPOSIA %K WAVE PROPAGATION %X We estimate a vehicle's speed, width, and length by jointly estimating its acoustic wave-pattern using a single passive acoustic sensor that records the vehicle's drive-by noise. The acoustic wave-pattern is estimated using three envelope shape (ES) components, which approximate the shape of the received signal's power envelope. We incorporate the parameters of the ES components along with estimates of the vehicle engine RPM and number of cylinders to form a vehicle profile vector. This vector provides a compressed statistics that can be used for vehicle identification and classification. Vehicle speed estimation and classification results are provided using field data. %I CENTER FOR AUTOMATION RESEARCH, UNIVERSITY OF MARYLAND COLLEGE PARK %8 2006/11// %G eng %U http://stinet.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA481471 %0 Report %D 2005 %T Headline Generation for Written and Broadcast News %A Zajic, David %A Dorr, Bonnie J %A Schwartz,Richard %K *INFORMATION RETRIEVAL %K *RADIO BROADCASTING %K AUTOMATIC %K AUTOMATIC SUMMARIZATION %K HEDGE TRIMMER %K INFORMATION SCIENCE %K RADIO COMMUNICATIONS %K STATISTICAL PROCESSES %K TEST AND EVALUATION %K WORDS(LANGUAGE) %X This technical report is an overview of work done on Headline Generation for written and broadcast news. The report covers HMM Hedge, a statistical approach based on the noisy channel model, Hedge Trimmer, a parse-and-trim approach using linguistically motivated trimming rules, and Topiary, a combination of Trimmer and Unsupervised Topic Discovery. Automatic evaluation of summaries using ROUGE and BLEU is described and used to evaluate the Headline Generation systems. %I Instititue for Advanced Computer Studies, Univ of Maryland, College Park %8 2005/03// %G eng %U http://stinet.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA454198