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Frontiers of Computer Science 2012年第3期6卷 293-312页

作者： Pei LI Xin Luna DONG Andrea MAURINO Divesh SRIVAStAVA Department of Informatics Systems and Communication University of Milan-Bicocca Milan 20126 Italy Data Management Department AT&T Labs-Research Florham Park NJ 07932 USA

Many data sets contain temporal records which span a long period of time; each record is associated with a time stamp and describes some aspects of a real-world en- tity at a particular time （e.g., author information in DBLP）. In such cases, we often wish to identify records that describe the same entity over time and so be able to perform interest- ing longitudinal data analysis. However, existing record link- age techniques ignore temporal information and fall short for temporal data. this article studies linking temporal records. First, we ap- ply time decay to capture the effect of elapsed time on entity value evolution. Second, instead of comparing each pair of records locally, we propose clustering methods that consider the time order of the records and make global decisions. Ex- perimental results show that our algorithms significantly out- perform traditional linkage methods on various temporal data sets.

关键词： temporal data record linkage data integration

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PRESELECtION OF CANDIDAtE UNItS IN A UNIt SELECtION-BASED tEXt-tO-SPEECH SYNtHESIS SYStEM

PRESELECTION OF CANDIDATE UNITS IN A UNIT SELECTION-BASED TE...

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6～(th) International Conference on Spoken Language Processing

作者： Alistair Conkie Mark C.Beutnagel Ann K.Syrdal Philip E.Brown At＆t labs-research Florham Park NJ USA At＆t labs-research Florham Park NJ USA At＆t labs-research Florham Park NJ USA At＆t labs-research Florham Park NJ USA

＜正＞ Unit selection-based speech synthesis has recently been the focus of much attention in the speech synthesis community. In general, the speech quality from such a system achieves a high degree of naturalness and good intelligibility. However, examining and selecting units for synthesis as a runtime operation makes the unit selection process computationally expensive. Considerable attention has been focused on reducing the complexity of unit selection while maintaining quality. Previous approaches to speeding up the process of runtime unit selection have focused on two aspects. （1） By limiting the number of candidate synthesis units considered in the unit selection process, the number of calculations required can be reduced. （2） By precomputing part of the needed calculations, the runtime complexity can be reduced. Much progress has been made using these methods, but usually at the expense of quality. We present two methods of reducing the complexity of the calculation that avoid any reduction in synthesis quality, while allowing a very fast unit selection process. Results are presented for the reduction in complexity of the calculation process, and for a perceptual experiment that shows quality is not reduced relative to a full unit selection process.

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tHE At＆t-DARPA COMMUNICAtOR MIXED-INItIAtIVE SPOKEN DIALOG SYStEM

THE AT＆T-DARPA COMMUNICATOR MIXED-INITIATIVE SPOKEN DIALOG ...

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6～(th) International Conference on Spoken Language Processing

作者： E.Levin S.Narayanan R.Pieraccini K.Biatov E.Bocchieri G.DiFabbrizio W.Eckert S.Lee A.Pokrovsky M.Rahim P.Ruscitti M.Walker at＆t labs-research 180 park avenue florham park NJ 07932 levinshribiatovenricopinosungbokandreimazinruscittiwalker at＆t labs-research 180 park avenue florham park NJ 07932 levinshribiatovenricopinosungbokandreimazinruscittiwalker at＆t labs-research 180 park avenue florham park NJ 07932 levinshribiatovenricopinosungbokandreimazinruscittiwalker at＆t labs-research 180 park avenue florham park NJ 07932 levinshribiatovenricopinosungbokandreimazinruscittiwalker at＆t labs-research 180 park avenue florham park NJ 07932 levinshribiatovenricopinosungbokandreimazinruscittiwalker at＆t labs-research 180 park avenue florham park NJ 07932 levinshribiatovenricopinosungbokandreimazinruscittiwalker at＆t labs-research 180 park avenue florham park NJ 07932 levinshribiatovenricopinosungbokandreimazinruscittiwalker At＆t labs-research 180 park avenue Florham Park NJ 07932 levinshribiatovenricopinosungbokandreimazinruscittiwalker at＆t labs-research 180 park avenue florham park NJ 07932 levinshribiatovenricopinosungbokandreimazinruscittiwalker at＆t labs-research 180 park avenue florham park NJ 07932 levinshribiatovenricopinosungbokandreimazinruscittiwalker at＆t labs-research 180 park avenue florham park NJ 07932 levinshribiatovenricopinosungbokandreimazinruscittiwalker at＆t labs-research 180 park avenue florham park NJ 07932 levinshribiatovenricopinosungbokandreimazinruscittiwalker

＜正＞the design and implementation of the At＆t Communicator mixed-initiative spoken dialog system is described. the Communicator project, sponsored by DARPA and launched in 1999, is a multi-year multi-site project on advanced spoken dialog systems research. the main focus of this paper is on issues related to the design of mixed-initiative systems. In addition to describing our architecture and implementation of the complex travel task, the paper reports on some preliminary evaluation results.

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EXPLOItING FREQUENCY-SCALING INVARIANCEPROPERtIES OF tHE SCALE tRANSFORM FORAUtOMAtIC SPEECH RECOGNItION

EXPLOITING FREQUENCY-SCALING INVARIANCEPROPERTIES OF THE SCA...

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6～(th) International Conference on Spoken Language Processing

作者： S.Umesh RichardC.Rose S.Parthasarathy Indian Institute of technology Kanpur INDIA At＆t labs-research Florham Park NJ USA At＆t labs-research Florham Park NJ USA

＜正＞An experimental study of the application of scale-transform to improve the performance of speaker independent continuous speech recognition, is presented in this paper. three major results are described. First, a comparison was made between the scale-transform based magnitude cepstrum coefficients （StCC） and mel-scale filter bank cepstrum coefficients （MFCC） on a telephone based connected digit recognition task. It was shown that

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Co-occurrence of Cell Lines, Basal Media and Supplementation in the Biomedical research Literature

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Journal of Data and Information Science 2020年第3期5卷 161-177页

作者： Jessica Cox Darin McBeath Corey Harper Ron Daniel Elsevier labs 230 Park AvenueNew YorkNY 10169USA

Purpose: the use of in vitro cell culture and experimentation is a cornerstone of biomedical research, however, more attention has recently been given to the potential consequences of using such artificial basal medias and undefined supplements. As a first step towards better understanding and measuring the impact these systems have on experimental results, we use text mining to capture typical research practices and trends around cell ***/methodology/approach: to measure the scale of in vitro cell culture use, we have analyzed a corpus of 94,695 research articles that appear in biomedical research journals published in ScienceDirect from 2000–2018. Central to our investigation is the observation that studies using cell culture describe conditions using the typical sentence structure of cell line, basal media, and supplemented compounds. Here we tag our corpus with a curated list of basal medias and the Cellosaurus ontology using the Aho-Corasick algorithm. We also processed the corpus with Stanford CoreNLP to find nouns that follow the basal media, in an attempt to identify supplements used. Findings: Interestingly, we find that researchers frequently use DMEM even if a cell line's vendor recommends less concentrated media. We see long-tailed distributions for the usage of media and cell lines, with DMEM and RPMI dominating the media, and HEK293, HEK293 t, and HeLa dominating cell lines used. research limitations: Our analysis was restricted to documents in ScienceDirect, and our text mining method achieved high recall but low precision and mandated manual inspection of many *** implications: Our findings document current cell culture practices in the biomedical research community, which can be used as a resource for future experimental ***/value: No other work has taken a text mining approach to surveying cell culture practices in biomedical research.

关键词： Cell culture Biomedical research text mining

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Measurement of sub-fm/Hz^(1/2) displacement spectral densities in ultrahigh-Q single-crystal microcavities with hertz-level lasers

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Photonics research 2022年第5期10卷 1202-1209页

作者： YOON-SOO JANG JINKANG LIM WENtING WANG SEUNG-WOO KIM ANAtOLIY SAVCHENKOV ANDREY BMAtSKO CHEE WEI WONG Fang Lu Mesoscopic Optics and Quantum Electronics Laboratory University of CaliforniaLos AngelesCalifornia 90095USA Division of Physical Metrology Korea Research Institute of Standards and Science(KRISS)Daejeon 34113Republic of Korea CACI-LGS labs Florham ParkNew Jersey 07932USA Department of Mechanical Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea OEwaves Inc. PasadenaCalifornia 91107USA Jet Propulsion Laboratory California Institute of TechnologyPasadenaCalifornia 91109USA

tracing a resonance frequency of a high quality factor(Q)optical cavity facilitates subpicometer displacement measurements of the optical cavity via Pound-Drever-Hall(PDH)locking scheme,tightly synchronizing a laser frequency to the optical *** we present observations of subfemtometer displacements on a ultrahigh-Q single-crystal MgF_(2)whispering-gallery-mode microcavity by frequency synchronization between a 1 Hz cavity-stabilized laser and a resonance of the MgF_(2) cavity using PDH laser-cavity *** characterize not only the displacement spectral density of the microcavity with a sensitivity of 1.5×10^(-16) m/Hz^(1/2) over the Fourier offset frequency ranging from 15 mHz to 100 kHz but also a 1.77 nm displacement fluctuation of the microcavity over 4500 *** measurement capability not only supports the analysis of integrated thermodynamical and technical cavity noise but allows for minute displacement measurements using laser-cavity locking for ultraprecise positioning,metrology,and sensing.

关键词： synchronization displacement cavity

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