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采用术语定义模式和多特征的新术语及定义识别方法 被引量:12
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作者 荀恩东 李晟 《计算机研究与发展》 EI CSCD 北大核心 2009年第1期62-69,共8页
新术语及其定义抽取是信息抽取的重要研究内容之一.研究结果表明,在科技文献中,一个新术语往往伴随其定义出现,通过考察,在真实文本中,术语定义存在显著的语言表述特征,从大规模真实语料库中,通过考察术语定义构成的语言学模式、定义中... 新术语及其定义抽取是信息抽取的重要研究内容之一.研究结果表明,在科技文献中,一个新术语往往伴随其定义出现,通过考察,在真实文本中,术语定义存在显著的语言表述特征,从大规模真实语料库中,通过考察术语定义构成的语言学模式、定义中词汇和术语周边的统计特征,提出了以术语定义的语言学模式(LPTD)作为待识别候选新术语集,同时考虑到有关新术语出现的上下文统计特征,用SVM分类器方法完成科技语料中新术语及其定义的识别.在大规模科技期刊上进行方法验证,开放性评测结果的精确率为90.5%、召回率达78.1%. 展开更多
关键词 信息抽取 术语定义模式 统计语言学模型 支持向量机 句子隶属度
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Effect of polypeptide 2B1 on condition of dampness pattern in rats in terms of Traditional Chinese Medicine 被引量:3
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作者 Zhangbin Yang Ting Xiang +6 位作者 Shijun Zhang Hongrui Zhan Zexiong Chen Baoguo Sun Xiaoling Chen Jingli Shi Bin Ren 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2014年第2期214-220,共7页
OBJECTIVE: This study investigated how polypeptide 2B1 is involved in regulating and governing dampness in rat models with dampness pattern defined in terms of Traditional Chinese Medicine. METHODS: We randomly divi... OBJECTIVE: This study investigated how polypeptide 2B1 is involved in regulating and governing dampness in rat models with dampness pattern defined in terms of Traditional Chinese Medicine. METHODS: We randomly divided 48 SPF 10-week-old male Sprague-Dawley (SD) rats into a normal group, normal + Aristolochic acid I (AA-I) for 5 min group, normal + AA-I for 60 min group, dampness pattern group (DS-Group), dampness pattern + AA-I for 5 rain tern + AA-I for 60 min group, and dampness pat- group. Groups were then treated accordingly. We took out the lung, stom- ach, liver, spleen, kidney, large intestine, and small intestine tissues to detect gene and protein expres- sion of organic anion transporter polypeptide 2B1 (OATP2B1). RESULTS= Gene expression of OATP2B1 in spleen, kidney, and small intestine of rats with dampness pattern was lower than that in normal rats (P〈0.05). The gene expressions of OATP2B1 in liver, stomach, large intestine, and small intestine were lower than that in control rats at different time points after being stimulated by AA-I (P〈0.05). CONCLUSION There is coordination among multiple viscera in handling the condition of dampness, and the mechanism underlying the action may rely on regulating the expression of OATP2B1. 展开更多
关键词 Medicine Chinese traditional VISCERA Organic anion transporter polypeptide 2B1 Dampness pattern Aristolochic acid
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