نتایج جستجو برای: extraction

تعداد نتایج: 165505  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی 1389

چکیده ندارد.

2006
Razvan C. Bunescu Raymond J. Mooney Arun K. Ramani Edward M. Marcotte

The task of mining relations from collections of documents is usually approached in two different ways. One type of systems do relation extraction from individual sentences, followed by an aggregation of the results over the entire collection. Other systems follow an entirely different approach, in which co-occurrence counts are used to determine whether the mentioning together of two entities ...

2005
Heng Ji Ralph Grishman

Information extraction systems incorporate multiple stages of linguistic analysis. Although errors are typically compounded from stage to stage, it is possible to reduce the errors in one stage by harnessing the results of the other stages. We demonstrate this by using the results of coreference analysis and relation extraction to reduce the errors produced by a Chinese name tagger. We use an N...

2000
Bir Bhanu Michael Boshra Xuejun Tan

We present a novel approach for extraction of minutiae features from fingerprint images. The proposed approach is based on the use of logical templates for minutiae extraction in the presence of data distortion. A logical template is an expression that is applied to the binary ridge (valley) image at selected potential locations to detect the presence of minutia at these locations. It is adapte...

Journal: :Information 2015
Shengyu Liu Buzhou Tang Qingcai Chen Xiaolong Wang

Drug name recognition (DNR), which seeks to recognize drug mentions in unstructured medical texts and classify them into pre-defined categories, is a fundamental task of medical information extraction, and is a key component of many medical relation extraction systems and applications. A large number of efforts have been devoted to DNR, and great progress has been made in DNR in the last severa...

Journal: :Journal of clinical pathology 1977
R Cobcroft G Tamagnini K M Dormandy

Serial plasmaphereses were performed on a 23-year-old haemophiliac, with antibodies to factor VIII (FVIII), in order to reduce the antibody level before multiple dental extractions. Eight phereses were carried out in which approximately 1.5 litres plasma was exchanged with isotonic saline. By the ninth exchange, which was carried out immediately before the extraction, the antibody level had fal...

2017
Olivier Ferret Xavier Tannier Aurélie Névéol Julien Tourille

In this paper, we present a method for temporal relation extraction from clinical narratives in French and in English. We experiment on two comparable corpora, the MERLOT corpus for French and the THYME corpus for English, and show that a common approach can be used for both languages.

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2005
jamshid manzoori ghasem karim nezhad

the aim of this work was to develop a selective cloud point extraction method for the separation and preconcentration of copper(ii) prior to spectrophotometric determination. for this purpose dithizone was used as a complexing agent and the experimental solution was acidified with sulfuric acid. triton x-114 was used as a surfactant and after phase separation, based on the cloud point of the mi...

Journal: :journal of agricultural science and technology 2010
p. keshavarz m. j. malakouti n. karimian a. fotovat

use of saline water for irrigation has shown considerable promise. however, its effect on the solubility and bioavailability of native soil nutrients is not well understood. this study was conducted to evaluate the effects of salinity on the behavior of zinc(zn) in calcareous soils. the soil samples with different physiochemical properties were collected from four locations in khorasan province...

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