Detecting causality from online psychiatric texts using inter-sentential language patterns
<p>Abstract</p> <p>Background</p> <p>Online psychiatric texts are natural language texts expressing depressive problems, published by Internet users via community-based web services such as web forums, message boards and blogs. Understanding the cause-effect relations e...
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| Format: | Article |
| Language: | English |
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BMC
2012-07-01
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| Series: | BMC Medical Informatics and Decision Making |
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| Online Access: | http://www.biomedcentral.com/1472-6947/12/72 |
| _version_ | 1818808225498136576 |
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| author | Wu Jheng-Long Yu Liang-Chih Chang Pei-Chann |
| author_facet | Wu Jheng-Long Yu Liang-Chih Chang Pei-Chann |
| author_sort | Wu Jheng-Long |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Online psychiatric texts are natural language texts expressing depressive problems, published by Internet users via community-based web services such as web forums, message boards and blogs. Understanding the cause-effect relations embedded in these psychiatric texts can provide insight into the authors’ problems, thus increasing the effectiveness of online psychiatric services.</p> <p>Methods</p> <p>Previous studies have proposed the use of word pairs extracted from a set of sentence pairs to identify cause-effect relations between sentences. A word pair is made up of two words, with one coming from the cause text span and the other from the effect text span. Analysis of the relationship between these words can be used to capture individual word associations between cause and effect sentences. For instance, (broke up, life) and (boyfriend, meaningless) are two word pairs extracted from the sentence pair: “I broke up with my boyfriend. Life is now meaningless to me”. The major limitation of word pairs is that individual words in sentences usually cannot reflect the exact meaning of the cause and effect events, and thus may produce semantically incomplete word pairs, as the previous examples show. Therefore, this study proposes the use of inter-sentential language patterns such as ≪broke up, boyfriend>, <life, meaningless≫ to detect causality between sentences. The inter-sentential language patterns can capture associations among multiple words within and between sentences, thus can provide more precise information than word pairs. To acquire inter-sentential language patterns, we develop a text mining framework by extending the classical association rule mining algorithm such that it can discover frequently co-occurring patterns across the sentence boundary.</p> <p>Results</p> <p>Performance was evaluated on a corpus of texts collected from PsychPark (<url>http://www.psychpark.org</url>), a virtual psychiatric clinic maintained by a group of volunteer professionals from the Taiwan Association of Mental Health Informatics. Experimental results show that the use of inter-sentential language patterns outperformed the use of word pairs proposed in previous studies.</p> <p>Conclusions</p> <p>This study demonstrates the acquisition of inter-sentential language patterns for causality detection from online psychiatric texts. Such semantically more complete and precise features can improve causality detection performance.</p> |
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| issn | 1472-6947 |
| language | English |
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| publishDate | 2012-07-01 |
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| spelling | doaj.art-053f6b245a934ef5a4419b14ebf0df7a2022-12-21T20:55:31ZengBMCBMC Medical Informatics and Decision Making1472-69472012-07-011217210.1186/1472-6947-12-72Detecting causality from online psychiatric texts using inter-sentential language patternsWu Jheng-LongYu Liang-ChihChang Pei-Chann<p>Abstract</p> <p>Background</p> <p>Online psychiatric texts are natural language texts expressing depressive problems, published by Internet users via community-based web services such as web forums, message boards and blogs. Understanding the cause-effect relations embedded in these psychiatric texts can provide insight into the authors’ problems, thus increasing the effectiveness of online psychiatric services.</p> <p>Methods</p> <p>Previous studies have proposed the use of word pairs extracted from a set of sentence pairs to identify cause-effect relations between sentences. A word pair is made up of two words, with one coming from the cause text span and the other from the effect text span. Analysis of the relationship between these words can be used to capture individual word associations between cause and effect sentences. For instance, (broke up, life) and (boyfriend, meaningless) are two word pairs extracted from the sentence pair: “I broke up with my boyfriend. Life is now meaningless to me”. The major limitation of word pairs is that individual words in sentences usually cannot reflect the exact meaning of the cause and effect events, and thus may produce semantically incomplete word pairs, as the previous examples show. Therefore, this study proposes the use of inter-sentential language patterns such as ≪broke up, boyfriend>, <life, meaningless≫ to detect causality between sentences. The inter-sentential language patterns can capture associations among multiple words within and between sentences, thus can provide more precise information than word pairs. To acquire inter-sentential language patterns, we develop a text mining framework by extending the classical association rule mining algorithm such that it can discover frequently co-occurring patterns across the sentence boundary.</p> <p>Results</p> <p>Performance was evaluated on a corpus of texts collected from PsychPark (<url>http://www.psychpark.org</url>), a virtual psychiatric clinic maintained by a group of volunteer professionals from the Taiwan Association of Mental Health Informatics. Experimental results show that the use of inter-sentential language patterns outperformed the use of word pairs proposed in previous studies.</p> <p>Conclusions</p> <p>This study demonstrates the acquisition of inter-sentential language patterns for causality detection from online psychiatric texts. Such semantically more complete and precise features can improve causality detection performance.</p>http://www.biomedcentral.com/1472-6947/12/72Causality detectionInter-sentential language patternsBiomedical text miningNatural language processing |
| spellingShingle | Wu Jheng-Long Yu Liang-Chih Chang Pei-Chann Detecting causality from online psychiatric texts using inter-sentential language patterns BMC Medical Informatics and Decision Making Causality detection Inter-sentential language patterns Biomedical text mining Natural language processing |
| title | Detecting causality from online psychiatric texts using inter-sentential language patterns |
| title_full | Detecting causality from online psychiatric texts using inter-sentential language patterns |
| title_fullStr | Detecting causality from online psychiatric texts using inter-sentential language patterns |
| title_full_unstemmed | Detecting causality from online psychiatric texts using inter-sentential language patterns |
| title_short | Detecting causality from online psychiatric texts using inter-sentential language patterns |
| title_sort | detecting causality from online psychiatric texts using inter sentential language patterns |
| topic | Causality detection Inter-sentential language patterns Biomedical text mining Natural language processing |
| url | http://www.biomedcentral.com/1472-6947/12/72 |
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