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Joint Entity and Event Extraction with Generative Adversarial Imitation Learning

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Data Intelligence 2019年第2期1卷 99-120页

作者： Tongtao Zhang Heng Ji Avirup Sil Computer Science Department Rensselaer Polytechnic InstituteTroyNew York 12180-3590USA ibm research AI ArmonkNew York 10504-1722USA

We propose a new framework for entity and event extraction based on generative adversarial imitation learning-an inverse reinforcement learning method using a generative adversarial network(GAN).We assume that instances and labels yield to various extents of difficulty and the gains and penalties(rewards)are expected to be *** utilize discriminators to estimate proper rewards according to the difference between the labels committed by the ground-truth(expert)and the extractor(agent).Our experiments demonstrate that the proposed framework outperforms state-of-the-art methods.

关键词： Information extraction Event extraction Imitation learning Generative adversarial network

A comprehensive review of tools for exploratory analysis of tabular industrial datasets

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Visual Informatics 2018年第4期2卷 235-253页

作者： Aindrila Ghosh Mona Nashaat James Miller Shaikh Quader Chad Marston Department of Electrical and Computer Engineering University of Alberta116 Street NWEdmontonT6G 1H9Canada Machine Learning research IBM CanadaTorontoCanada Information Technology and Analytics IBM U.S.BostonUnited States

Exploratory data analysis plays a major role in obtaining insights from *** the last two decades,researchers have proposed several visual data exploration tools that can assist with each step of the analysis ***,in recent years,data analysis requirements have changed *** constantly increasing size and types of data to be analyzed,scalability and analysis duration are now among the primary concerns of ***,in order to minimize the analysis cost,businesses are in need of data analysis tools that can be used with limited analytical *** address these challenges,traditional data exploration tools have evolved within the last few *** this paper,with an in-depth analysis of an industrial tabular dataset,we identify a set of additional exploratory requirements for large ***,we present a comprehensive survey of the recent advancements in the emerging field of exploratory data *** investigate 50 academic and non-academic visual data exploration tools with respect to their utility in the six fundamental steps of the exploratory data analysis *** also examine the extent to which these modern data exploration tools fulfill the additional requirements for analyzing large ***,we identify and present a set of research opportunities in the field of visual exploratory data analysis.

关键词： Exploratory data analysis Industrial tabular data Interactive visualization Systematic literature review research opportunities

X-RAY REFLECTIVITY CHARACTERIZATION OF SURFACES,INTERFACES AND MULTILAYERS

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X-RAY REFLECTIVITY CHARACTERIZATION OF SURFACES,INTERFACES A...

Rapid micro-immunohistochemistry

Sixteenth Congress of the International Union of Crystallography

作者： T.C.Huang R.Gilles G.Will ibm almaden research Center 650 Harry RoadSan JoseCA 95120-6099USA Mineralogical Institute University BonnPoppelsdorfer Schloss5300 Bonn 1Germany

＜正＞Characterization of surfaces,interfaces and thin films is a growing and important application of X-ray analysis.X-ray results can be used to develop methods of growth of materials and in the interpretation of their physical properties. In our laboratories,the X-ray reflectivity technique has been used successfully for the characterization of surface smoothness and

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Microsystems & Nanoengineering 2020年第1期6卷 285-294页

作者： Robert D.Lovchik David Taylor Govind Kaigala ibm research Europe Saeumerstrasse 48803 RueschlikonSwitzerland Present address:Eidgenossische Technische Hochschule Zurich Department of Mechanical and Process EngineeringSonneggstrasse 38092 ZurichSwitzerland

We present a new and versatile implementation of rapid and localized immunohistochemical staining of tissue ***(IHC)comprises a sequence of specific biochemical reactions and allows the detection of specific proteins in tissue *** the rapid implementation of IHC,we fabricated horizontally oriented microfluidic probes(MFPs)with functionally designed apertures to enable square and circular footprints,which we employ to locally expose a tissue to time-optimized sequences of different *** show that the two main incubation steps of IHC protocols can be performed on MDAMB468-1510A cell block sections in less than 30 min,compared to incubation times of an hour or more in standard *** analysis on the timescale of tens of minutes could potentially be applied during surgery,enabling clinicians to react in more dynamically and ***,this rapid IHC implementation along with conservative tissue usage has strong potential for the implementation of multiplexed assays,allowing the exploration of optimal assay conditions with a small amount of tissue to ensure high-quality staining results for the remainder of the sample.

关键词： versatile steps sections

Bayesian Optimization for Field-Scale Geological Carbon Storage

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Engineering 2022年第11期18卷 96-104页

作者： Xueying Lu Kirk E.Jordan Mary F.Wheeler Edward O.Pyzer-Knapp Matthew Benatan Center for Subsurface Modeling Oden Institute for Computational Engineering and SciencesThe University of Texas at AustinAustinTX 78712USA ibm research United Kingdom Warrington WA44ADUK

We present a framework that couples a high-fidelity compositional reservoir simulator with Bayesian optimization(BO)for injection well scheduling optimization in geological carbon *** work represents one of the first at tempts to apply BO and high-fidelity physics models to geological carbon *** implicit parallel accurate reservoir simulator(IPARS)is utilized to accurately capture the underlying physical processes during CO_(2)*** provides a framework for several flow and mechanics models and thus supports both stand-alone and coupled *** this work,we use the compositional flow module to simulate the geological carbon storage *** compositional flow model,which includes a hysteretic three-phase relative permeability model,accounts for three major CO_(2)trapping mechanisms:structural trapping,residual gas trapping,and solubility ***,IPARS is coupled to the International Business Machines(ibm)Corporation Bayesian Optimization Accelerator(BOA)for parallel optimizations of CO_(2)injection strategies during field-scale CO_(2)*** builds a probabilistic surrogate for the objective function using a Bayesian machine learning algorithm-the Gaussian process regression,and then uses an acquisition function that leverages the uncertainty in the surrogate to decide where to *** ibm BOA addresses the three weaknesses of standard BO that limits its scalability in that ibm BOA supports parallel(batch)executions,scales better for high-dimensional problems,and is more robust to *** demonstrate these merits by applying the algorithm in the optimization of the CO_(2)injection schedule in the Cranfield site in Mississippi,USA,using field *** optimized injection schedule achieves 16%more gas storage volume and 56%less water/surfactant usage compared with the *** performance of BO is compared with that of a genetic algorithm(GA)and a covariance matrix adaptation(CMA)-e

关键词： Compositional flow Bayesian optimization Geological carbon storage CCUS Machine learning AI for science

并行高分辨率有限区预报系统在ibm SP上的建立

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应用气象学报 2003年第1期14卷 119-121页

作者：朱政慧闫之辉 Zaphiris Christidis 国家气象中心数控室北京100081 ibm TJ Watson research Center New York 10598 USA

从理论上讲，在多节点多处理器并行计算机系统上用MPI/OpenMP进行混合并行编程，即在节点间用MPI通信，而节点内用OpenMP，应该取得比用纯MPI并行化的应用程序更好的并行性能。目前，各国的应用程序开发者和气象工作者们都在致力于这方... 详细信息

从理论上讲，在多节点多处理器并行计算机系统上用MPI/OpenMP进行混合并行编程，即在节点间用MPI通信，而节点内用OpenMP，应该取得比用纯MPI并行化的应用程序更好的并行性能。目前，各国的应用程序开发者和气象工作者们都在致力于这方面的研究。可以说，这种方法的可行性是不容置疑的，它应当是今后并行编程的框架设计的共同趋势。本文介绍了在ibm SP并行计算机上优化和并行化高分辨率有限区同化预报系统(HLFAS)中模式所采用的这种混合编程方法和技术。

关键词：天气预报 ibmSP并行机 HLAFS模式并行处理应用程序

Month-Long Simulations of Gravity Waves over North America and North Atlantic in Comparison with Satellite Observations

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Acta meteorologica Sinica 2013年第3期27卷 446-454页

作者：张福青张盟卫俊宏汪曙光 Department of Meteorology Pennsylvania State UniversityUniversity ParkPA 16802 USA ibm research Department of Applied Physics and Applied Mathematics Columbia UniversityNew York NY 10027 USA

Mesoscale simulations of gravity waves in the upper troposphere and lower stratosphere over North America and North Atlantic Ocean in January 2003 are compared with satellite radiance measurements from the Advanced Microwave Sounding Unit-A （AMSU-A）. Four regions of strong gravity wave （GW） activities are found in the model simulations and the AMSU-A observations： the northwestern Atlantic, the U.S. Rockies, the Appalachians, and Greenland. GWs over the northwestern Atlantic Ocean axe associated with the midlatitude baroclinic jet-front system, while the other three regions are apparently related to high topography. Model simulations are further used to analyze momentum fluxes in the zonal and meridional directions. It is found that strong westward momentum fluxes axe prevalent over these regions over the whole period. Despite qualitative agreement between model simulations and satellite measurements, sensitivity experiments demonstrate that the simulated GWs are sensitive to the model spin-up time.

关键词： gravity wave satellite radiance measurement baroclinic jet-front

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ibm GALE中文识别系统

清华大学学报（自然科学版） 2009年第S1期49卷 1249-1253页

作者：张世磊施勤秦勇刘文 CHU StephenM KUO Hong-Kwang MANGU Lidia ibm中国研究院北京100193 ibm华生研究中心

为解决中文音频自动转成文字问题,ibm开发了GALE中文识别系统。该系统采用区分性声学模型训练方法和新颖的基于主题的语言模型自适应技术;为获得最优的识别性能,系统采用多遍解码的识别策略。该文还给出该系统在3个测试集上的识别结果:... 详细信息

为解决中文音频自动转成文字问题,ibm开发了GALE中文识别系统。该系统采用区分性声学模型训练方法和新颖的基于主题的语言模型自适应技术;为获得最优的识别性能,系统采用多遍解码的识别策略。该文还给出该系统在3个测试集上的识别结果:包括广播新闻和广播访谈节目,结果显示,ibm GALE中文识别系统取得了很好的识别性能;此外,该文还分析了特殊声学现象对识别结果的影响,结果显示,对识别率影响最大的3种声学现象为说话人语速过快、语音交叠和口音问题,这指示了系统下一步的改进方向。

关键词：语音识别区分型模型训练语言模型自适应多遍解码

Application Server Aging Model and Multi-Level Rejuvenation Strategy Using Semi-Markov Process

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Wuhan University Journal of Natural Sciences 2006年第5期11卷 1209-1215页

作者： ZHAO Tianhai QI Yong SHEN Junyi HOU Di ZHENG Xiaomei LIU Liang School of Electronics and Information Engineering Xi＇an Jiaotong University Xi＇an 710049 Shaanxi China ibm China research Laboratory Beijing 100094China

Aiming at the characteristic of the dependency between the application components and the application server platform, a rejuvenation strategy with two different levels of rejuvenation granularities is put forward in this paper including the application component reiuvenation and the application server system rejuvenation. The availability and maintenance cost functions are obtained by means of establishing the application server aging model and the boundary condition of the optimal rejuvenation time is analyzed. Theory analysis indicates that the two-level rejuvenation strategy is superior to the traditional single level one. Finally, evaluation experiments are carried out and numerical result shows that compared with the traditional rejuvenation policy, the rejuvenation strategy proposed in this paper can further increase availability of the application server and reduce maintenance cost.

关键词： application server software rejuvenation reliability software maintenance