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政大機構典藏 > 商學院 > 財務管理學系 > 期刊論文 > Item 140.119/62716

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/62716

Title:	Opinion Mining for Relating Subjective Expressions and Annual Earnings in US Financial Statements
Authors:	張元晨 Chen,Chien-Liang;Liu,Chao-Lin;Chang,Yuan-Chen;Tsai,Hsiang-Ping
Contributors:	財管系
Keywords:	financial text mining;opinion mining;sentiment analysis;financial multiword expressions;natural language processing;MPQA;information extraction
Date:	2013.07
Issue Date:	2013-12-19 11:56:24 (UTC+8)
Abstract:	Financial statements contain quantitative information and manager’s subjective evaluation of firm’s financial status. Using information released in U.S. 10-K filings. Both qualitative and quantitative appraisals are crucial for quality financial decisions. To extract such opinioned statements from the reports, we built tagging models based on the conditional random field (CRF) techniques, considering a variety of combinations of linguistic factors including morphology, orthography, predicate-argument structure, syntax, and simple semantics. Our results show that the CRF models are reasonably effective to find opinion holders in experiments when we adopted the popular MPQA corpus for training and testing. The contribution of our paper is to identify opinion patterns in multiword expressions (MWEs) forms rather than in single word forms. We find that the managers of corporations attempt to use more optimistic words to obfuscate negative financial performance and to accentuate the positive financial performance. Our results also show that decreasing earnings were often accompanied by ambiguous and mild statements in the reporting year and that increasing earnings were stated in assertive and positive way.
Relation:	Journal of Information Science and Engineering, 29(4), 743-764
Data Type:	article
Appears in Collections:	[財務管理學系] 期刊論文

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