Book cross-reading method
A technology for books and chapters, applied in the field of cross-reading of books, which can solve problems such as failure to consider the semantics of document words and inability to effectively retrieve massive hash codes.
Active Publication Date: 2014-04-09
ZHEJIANG UNIV
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Problems solved by technology
[0007] The purpose of the present invention is to provide a book cross-reading method for overcoming the shortcomings of the above-mentioned existing methods that fail to consider the semantics of document words and cannot effectively retrieve massive hash codes.
Method used
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Experimental program
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Embodiment
[0070] as attached image 3 As shown, an application example of the book cross-reading method is given. Below in conjunction with the method of this technology describe in detail the concrete steps that this example implements, as follows:
[0071] (1) When the system has preprocessed all book chapters, obtained chapter document fingerprints, and established a unified index. Assuming that the user is interested in the chapter "Treatment of Diabetes", and clicks the "Recommend" button, the system will obtain metadata such as the text information of the chapter and the category information of the book.
[0072] (2) Extract nouns or noun phrases contained in the chapter text through natural language processing techniques such as word segmentation, part-of-speech tagging, stop word removal, and phrase detection.
[0073](3) Calculate the document feature vector and the category feature vector to which the chapter belongs, and adjust the document feature vector of the chapter acc...
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The invention discloses a book cross-reading method. The book cross-reading recommendation technology is kind of substantially document-based retrieval, in other words, one document is taken as an inquiry to retrieve other documents similar in semantics. The book cross-reading recommendation technology includes that book chapters are generated into document fingerprints by means of a semantics similarity sensitivity harsh algorithm, the document fingerprints of the two book chapters similar in semantics are ensured to be similar in Hamming distance, then heterogeneous information of the document fingerprints, book metadata, chapter titles and the like are unified in an index, and finally candidate recommendation documents are rearranged based on access logs of a user and book metadata information. Due to the fact that the book chapters are projected into the semantics-related document fingerprints and the heterogeneous information of the document fingerprints, the metadata information, the chapter titles, user clicks and the like are unified into the index, other semantics-related chapters can be rapidly and efficiently recommended based on reading chapters of the user, user's understanding of book content can be assisted, and book cross reading can be realized.
Description
technical field [0001] The invention relates to a book content retrieval method, in particular to a book cross-reading method. Background technique [0002] With the increasing development of digital libraries, users hope to be able to read other book chapters related to the current content when reading books, and urgently hope that digital libraries can provide a book cross-reading recommendation service. [0003] Book cross-reading is essentially a document-based query (query by document), which uses a document as a query to retrieve other documents with similar content. Traditional text retrieval systems are generally designed as keyword-based retrieval, that is, query words are generally short. If the traditional text retrieval method is adopted directly, the performance will drop. For example, if the inverted index method is used, since the query document contains many words, it takes a long time to merge the retrieval results of each word. [0004] Documents can als...
Claims
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Login to View More IPC IPC(8): G06F17/30
CPCG06F16/93
Inventor 鲁伟明杨善松魏宝刚庄越挺
Owner ZHEJIANG UNIV