DC 欄位 | 值 | 語言 |
dc.contributor.author | 陳光華 | zh-TW |
dc.contributor.author | 莊雅蓁 | zh-TW |
dc.creator | 陳光華; 莊雅蓁 | - |
dc.date | 2001 | zh_TW |
dc.date.accessioned | 2006-08-23T03:55:11Z | en |
dc.date.accessioned | 2018-05-30T04:19:14Z | - |
dc.date.available | 2006-08-23T03:55:11Z | en |
dc.date.available | 2018-05-30T04:19:14Z | - |
dc.date.issued | 2001 | - |
dc.identifier.uri | http://ntur.lib.ntu.edu.tw//handle/246246/29211 | - |
dc.description.abstract | 本研究主要探討議題有三:一,自動建
構之同義詞典對資訊檢索之輔助效益;二,以何種索
引典詞彙關係來擴展查詢問句可得到最佳的效益;
三,同義詞典與索引典整合輔助檢索的效益分析。限
於詞彙資源取得不易,本研究採用實驗文件資料庫為
基礎,以進行查詢問句擴展的實驗。首先,蒐集原始
查詢問句,再以不同的詞彙來源,包括以同義詞典及
索引典分別擴展查詢問句,以及整合兩者再擴展查詢
問句,建構多組不同的查詢問句擴展模式。實驗結果
的效益評估,由人工進行相關判斷,再依判斷所得計
算檢索結果的求準率。研究顯示,以同義詞典詞彙群
內詞彙數量較少的層次來擴展查詢問句,可得到較好
的檢索效益;不過以索引典各種詞彙關係來擴展查詢
問句時,檢索結果沒有顯著的差異。整體而言,以整
合所有詞彙關係的擴展模式有較好的檢索效益,尤其
以同義詞典擴展,再輔以索引典加權後的檢索效益可
略為提升。但如再以索引典進行二次擴展時,檢索效
益反而降低。實驗亦發現自動建構的同義詞典內容,
受斷詞品質的優劣所影響,因此,對查詢問句擴展的
檢索效益而言,字串比對方式亦是重要的影響因素。 | zh_TW |
dc.description.abstract | This thesis aims at three important
issues for query expansion: whether the automatic
constructed synonym dictionary could enhance the
retrieval effectiveness, which relationship of thesaurus
has the best performance, and the effectiveness of the
integration of synonym dictionary and thesaurus. In the
experiments of query expansion, the queries are
expanded in different models, including expanding by
either synonym dictionary or thesaurus or both. Finally,
performance is evaluated in precision. The results show
that query expansion using second level of synonym
dictionary has better performance. Though the effects of
different relationships prescribed in the thesaurus are
similar, expanding by union of all relationships shows
better performance. The model of first expanding query
by synonym dictionary then modifying it by thesaurus
has improved retrieval performance slightly, but the
performance is decreased in further expansion. We also
find that the correctness of word segmentation has a
great impact on the quality of synonym dictionary. The
mode of string mapping is another important factor. | en |
dc.format | application/pdf | en |
dc.format.extent | 316545 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language | zh-TW | - |
dc.language.iso | zh_TW | zh_TW |
dc.publisher | 臺北市:國立臺灣大學圖書資訊學系 | zh_TW |
dc.relation | 資訊傳播與圖書館學 8(1),2001年9月,59-75 | zh_TW |
dc.relation.ispartof | 資訊傳播與圖書館學 | - |
dc.rights | 國立臺灣大學圖書資訊學系 | zh_TW |
dc.subject | 資訊檢索 | zh_TW |
dc.subject | 查詢問句擴展 | zh_TW |
dc.subject | 索引典 | zh_TW |
dc.subject | 同義詞 | zh_TW |
dc.subject | Information Retrieval | en |
dc.subject | Query Expansion | en |
dc.subject | Thesaurus | en |
dc.subject | Synonym | en |
dc.title | 應用於資訊檢索的中文同義詞之建構 | zh_TW |
dc.title | Expansion of Chinese Words in Information Retrieval | en |
dc.type | journal article | en |
dc.relation.pages | 59-75 | - |
dc.identifier.uri.fulltext | http://ntur.lib.ntu.edu.tw/bitstream/246246/29211/1/jicls2001.pdf | - |
item.openairetype | journal article | - |
item.fulltext | with fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.grantfulltext | open | - |
item.languageiso639-1 | zh_TW | - |
item.cerifentitytype | Publications | - |
crisitem.author.dept | Library | - |
crisitem.author.dept | Library and Information Science | - |
crisitem.author.orcid | 0000-0003-0616-3815 | - |
crisitem.author.parentorg | Administrative Unit | - |
crisitem.author.parentorg | College of Liberal Arts | - |
顯示於: | 圖書資訊學系
|