A concept - based approach is expected to resolve the word sense ambiguities in information retrieval and apply the semantic importance of the concepts, instead of the term frequency, to representing the contents of a document. consequently, a formalized document framework is proposed. the document framework is used to express the meaning of a document with the concepts which are expressed by high semantic importance. the framework consists of two parts : the " domain " information and the " situation background " information of a document. a document - extracting algorithm and a two - stage smoothing method are also proposed. the quantification of the similarity between the query and the document framework depends on the smoothing method. the experiments on the trec6 collection demonstrate the feasibility and effectiveness of the proposed approach in information retrieval tasks. the average recall level precision of the model using the proposed approach is about 10 ? higher than that of traditional ones
為了獲取詞語在文章中的語義權重，解決詞語的同義、多義模糊問題，提升
信息檢索的效率，提出了一種基於概念的檢索模型，模型中設計了一種形式化的文本內容表示框架，框架由2部分構成:文章的"領域"以及"情
景與背
景"
信息，並由概念（形式化語義）加以表示.同時，提出了提取該概念框架的方法，給出了用於框架與檢索要求間匹配的兩階段平滑演算法.實驗表明，在trec6提供的小規模語料集下，採用所提出方法的
信息檢索模型與傳統模型相比，平均召回準確率提升了約10 ? ，效果顯著，充分說明了基於本文描述方法構建的、以概念作為處理中介的
信息檢索系統的有效性和可行性
You ll find more background information about antipatterns, but also information about memory management, caching, ejb components, coding conventions, performance analysis, and more
您可以在書中找到更多關于反模式的背
景信息，以及關于內存管理、高速緩存、 ejb組件、編碼約定、性能分析的
信息和更多內容。
If you ' d like to get some background information on what ' s happening when you install software ( which may be a little technical in places ), read packages and package management
如果您想了解更多的安裝軟體時發生的背
景信息（可能包含適量的技術性知識） ，請閱讀「軟體包和軟體包管理」 。
Factors affecting the accessing of backgrounded information in multi - clue discourse comprehension
多線索語篇閱讀中影響背
景信息通達的因素
Technical background info on xml in the was advanced edition 3. 5 online help
Was高級版3 . 5在線幫助中有關xml的技術背
景信息
Guests from left ms janet ng, mr alex ma, mr cy lee, mrs jessica yeung and mr peter yan answering questions from the audience
眾嘉賓左起吳世瑤女士，馬錦霖先生，李清源先生，楊吳斯馨女士及任
景信先生為現場觀眾解答疑問
Aiming at the scheme of the signal electromagnetic environment simulator of the wireless communication system, the mission of this project is to design and realize the conversion of high speed parallel signal to serial signal and conversion of high speed digital signal to analog signal. the signal comes from the v / uhf wave band of the background simulator
本課題的任務是針對通
信信號電磁環境模擬器系統的方案要求，設計實現背
景信號模擬器v uhf波段後端高速
信號的復接與d a轉換，為后級的頻率綜合器的
信號頻譜搬移提供了基本
信號。
Background on the london 2012 olympic bid
倫敦2012申奧背
景信息
Infrared imaging seeker can provide much information about the target and the background, which helps to settle the problems of the automatic targets recognition ( atr ) at long distance and of aiming at fatal parts within short distance
紅外成像導引頭可以提供豐富的目標和背
景信息，能較好的解決遠距離目標自動識別和近距離命中點選擇等問題。
Mr peter yan
任
景信先生
By thorough study of chaos, more and more researches show that a lot of weak signals are embedded in the strong chaotic noise
隨著對混沌學的深入研究，越來越多的科學研究表明很多微弱
信號湮沒在具有混沌行為的背
景信號里。
Apply the background information of the form to locate the geometric structure is a research hotspot of the document processing
採用表格版面的背
景信息來定位表格的幾何結構是目前表格處理的研究熱點。
The activation and suppression of different anaphoric referents during discourse comprehension
不同性質語篇背
景信息的激活與抑制
Environment testing. part 3 : background information. section 1 : cold and dry heat tests
環境試驗.第3部分:背
景信息.第1節:低溫和乾熱試驗
The effect of contextual navigation aids and cognitive style on the usability of hypertext
背景信息導航幫助和認知風格對超文本使用的影響
