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13 results on '"Ning Xia"'

2. zhong guo tan yang qu zhi wu zhi

Author

ning xia hui zu zi zhi qu nong ye xian dai hua ji di ban gong shi ning xia hui zu zi zhi qu xu mu ju shan xi sheng xi bei zhi wu yan jiu suo, Institute of Botany, Chinese Academy of Sciences, and ning xia hui zu zi zhi qu nong ye xian dai hua ji di ban gong shi ning xia hui zu zi zhi qu xu mu ju shan xi sheng xi bei zhi wu yan jiu suo

Subjects
Botany
Published
1993

8. zhong guo tan yang qu zhi wu zhi

Author

xi bei zhi wu yan jiu suo ning xia hui zu zi zhi qu nong ye xian dai hua ji di ban gong shi, Institute of Botany, Chinese Academy of Sciences, and xi bei zhi wu yan jiu suo ning xia hui zu zi zhi qu nong ye xian dai hua ji di ban gong shi

Subjects
Botany
Published
1988

13. Semi-supervised Abstraction-Augmented String Kernel for Multi-level Bio-Relation Extraction.

Author

Kuksa, Pavel, Qi, Yanjun, Bai, Bing, Collobert, Ronan, Weston, Jason, Pavlovic, Vladimir, and Ning, Xia

Abstract

Bio-relation extraction (bRE), an important goal in bio-text mining, involves subtasks identifying relationships between bio-entities in text at multiple levels, e.g., at the article, sentence or relation level. A key limitation of current bRE systems is that they are restricted by the availability of annotated corpora. In this work we introduce a semi-supervised approach that can tackle multi-level bRE via string comparisons with mismatches in the string kernel framework. Our string kernel implements an abstraction step, which groups similar words to generate more abstract entities, which can be learnt with unlabeled data. Specifically, two unsupervised models are proposed to capture contextual (local or global) semantic similarities between words from a large unannotated corpus. This Abstraction-augmented String Kernel (ASK) allows for better generalization of patterns learned from annotated data and provides a unified framework for solving bRE with multiple degrees of detail. ASK shows effective improvements over classic string kernels on four datasets and achieves state-of-the-art bRE performance without the need for complex linguistic features. [ABSTRACT FROM AUTHOR]

Published
2010
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