نتایج جستجو برای: nlp formulation

تعداد نتایج: 120726  

2014
James Masanz Serguei V. Pakhomov Hua Xu Stephen T. Wu Christopher G. Chute Hongfang Liu

The number of Natural Language Processing (NLP) tools and systems for processing clinical free-text has grown as interest and processing capability have surged. Unfortunately any two systems typically cannot simply interoperate, even when both are built upon a framework designed to facilitate the creation of pluggable components. We present two ongoing activities promoting open source clinical ...

Journal: :Journal of the American Medical Informatics Association : JAMIA 2017
Ergin Soysal Jingqi Wang Min Jiang Yonghui Wu Serguei V. S. Pakhomov Hongfang Liu Hua Xu

Existing general clinical natural language processing (NLP) systems such as MetaMap and Clinical Text Analysis and Knowledge Extraction System have been successfully applied to information extraction from clinical text. However, end users often have to customize existing systems for their individual tasks, which can require substantial NLP skills. Here we present CLAMP (Clinical Language Annota...

2017
Dapeng Liu Yan Li Manoj A. Thomas

Natural Language Processing (NLP) is now widely integrated into web and mobile applications, enabling natural interactions between human and computers. Although many NLP studies have been published, none have comprehensively reviewed or synthesized tasks most commonly addressed in NLP research. We conduct a thorough review of IS literature to assess the current state of NLP research, and identi...

Journal: :Natural Language Engineering 2009
Yaoyong Li Kalina Bontcheva Hamish Cunningham

Support Vector Machines (SVM) have been used successfully in many Natural Language Processing (NLP) tasks. The novel contribution of this paper is in investigating two techniques for making SVM more suitable for language learning tasks. Firstly, we propose an SVM with uneven margins (SVMUM) model to deal with the problem of imbalanced training data. Secondly, SVM active learning is employed in ...

2006
Dan Stefanescu Dan Tufis

The aligning and merging of ontologies with overlapping information are actual one of the most active domain of investigation in the Semantic Web community. Multilingual lexical ontologies thesauri are fundamental knowledge sources for most NLP projects addressing multilinguality. The alignment of multilingual lexical knowledge sources has various applications ranging from knowledge acquisition...

2015
Philipp Renner Karl Schmedders

This paper contributes to the theoretical and numerical analysis of discrete time dynamic principal agent problems with continuous choice sets. We first provide a new and simplified proof for the recursive reformulation of the sequential dynamic principal agent relationship. Next we prove the existence of a unique solution for the principal’s value function, which solves the dynamic programming...

Journal: :Kybernetika 2011
Lenka Pavelková

The paper deals with parameter and state estimation and focuses on two problems that frequently occur in many practical applications: (i) bounded uncertainty and (ii) missing measurement data. An algorithm for the state estimation of the discrete-time non-linear state space model whose uncertainties are bounded is proposed. The algorithm also copes with situations when some measurements are mis...

Journal: :Optimization Methods and Software 2016
Luís M. Fernandes Masao Fukushima Joaquim Júdice Hanif D. Sherali

The Eigenvalue Complementarity Problem (EiCP) differs from the traditional eigenvalue problem in that the primal and dual variables belong to a closed and convex cone K and its dual, respectively, and satisfy a complementarity condition. In this paper we investigate the solution of the SecondOrder Cone EiCP (SOCEiCP) where K is the Lorentz cone. We first show that the SOCEiCP reduces to a speci...

2000
Barbora Hladká

Our context considerations will be practically oriented; we will explore the specification of a context scope in the Czech morphological tagging. We mean by morphological tagging/annotation the automatic/manual disambiguation of the output of morphological analysis. The Prague Dependency Treebank (PDT) serves as a source of annotated data. The main aim is to concentrate on the evaluation of the...

2013
Xue-Yuan Chen Shan-Mei Wang Nan Li Yang Hu Yuan Zhang Jin-Fu Xu Xia Li Jie Ren Bo Su Wei-Zhong Yuan Xin-Rong Teng Rong-Xuan Zhang Dian-hua Jiang Xavier Mulet Hui-Ping Li

OBJECTIVE Acute lung injury (ALI), is a major cause of morbidity and mortality, which is routinely treated with the administration of systemic glucocorticoids. The current study investigated the distribution and therapeutic effect of a dexamethasone(DXM)-loaded immunoliposome (NLP) functionalized with pulmonary surfactant protein A (SP-A) antibody (SPA-DXM-NLP) in an animal model. METHODS DXM...

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