喵喵 發問時間: 社會與文化語言 · 1 0 年前

請協助翻譯有關資料檢索之英文意思.....太難了qq

<Information vs. Data Retrieval>

IR system is concerned more with retrieving information about a subject than with retrieving data which satisfies a given query

Determine which documents of a collection contain the keywords in the user query

Information retrieval

-Deals with natural language text which is not always well structured and could be semantically ambiguous

Data retrieval system

-Deals with data that has a well defined structure and semantics

-Retrieve all objects which satisfy clearly defined conditions in regular expression or relational algebra expression

-Data has a well defined structure and semantics -- a database system

The effective retrieval of relevant information is directly affected

both by the user task and by the logical view of the document adopted

by the retrieval system

[Query] Translate user’s information need into a query

[Index, Weighting] Content identifiers (keywords, index terms, descriptors) characterize the stored texts.

[Similarity computation] degrees of coincidence between the sets of identifiers attached to queries and documents

generic information retrieval system select and return to the user desired documents from a large set of documents in accordance with criteria specified by the user

<functions>

1.document searchthe selection of documents from an existing

collection of documents

2.document routingthe dissemination of incoming documents to appropriate users on the basis of user interest profiles

The search process matches a single Detection Need against the stored corpus to return a subset of documents.

Routing matches a single document against a group of Profiles to determine which users are interested in the document.

Profiles stand long-term expressions of user needs.

Search queries are ad hoc in nature.

A generic detection architecture can be used for both the search and routing

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  • 1 0 年前
    最佳解答

    <訊息與數據檢索>

    與用挽回滿足一個規定的質問的數據相比,IR系統用挽回關於一個主題的訊息更多有關

    確定一次收集中的哪份資料在用戶疑問號裡包含關鍵字

    資訊擷取

    -處理沒被總很好地組織可能是含糊semantically的自然語言正文

    數據檢索系統

    -處理有一個確定得很好的架構和語義學的數據

    -挽回全部對象,這用正規表達式或者相關的代數表示滿足清楚確定的條件

    -數據有一個確定得很好的架構和語義學 -- 一個數據庫系統

    相關的訊息的有效的取回被直接影響

    兩個以那些用戶工作和以合乎邏輯觀看具有採用的那些資料

    透過取回系統

    [質問 ]把user s 訊息需要翻譯成為一個質問

    [索引,加重 ]內容標識符(關鍵字,標引詞,描述符)表現被儲存的正文的特性。

    [相象計算 ]附在質問和資料上的在各種標識符之間的巧合的度

    一般的資訊擷取系統選擇並且返回用戶根據用用戶說明的標準從一大套資料想要資料

    <功能>

    1.來自一次現有的檔案收集的資料的資料searchthe選擇

    2.合適的用戶的進來的資料的資料routingthe 傳播根據用戶使外形感興趣

    搜索過程匹配一次單個的察覺依照被儲存的全書需要返回一個資料的子集。

    鋪設使一份單個的資料與一組外形搭配確定哪個用戶對資料感興趣。

    外形站用戶需要的長期的表達模式。

    搜尋質問性質上是專門的。

    一座一般的察覺建築可以被為搜尋和鋪設使用

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