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Method for supporting full text retrieval system, and searching numerical value categorical data domain meanwhile

A numerical type, retrieval system technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as low efficiency, low text retrieval efficiency, inability to compare size or range retrieval, etc., to achieve high efficiency. Effect

Active Publication Date: 2008-03-05
NEW FOUNDER HLDG DEV LLC +2
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  • Abstract
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Problems solved by technology

Although relational databases can store and retrieve text data, the efficiency of text retrieval is very low, and it is difficult to meet the requirements of fast retrieval of massive text data; while traditional full-text retrieval does not support the retrieval of numerical data fields, let alone in retrieval Perform size comparison or range retrieval between values ​​in conditions
At present, in many applications, structured data and unstructured data are stored and retrieved separately, and the two applications are combined through the application system. This method not only brings a lot of development workload to the application system, but also has system functions. Limitations, inefficiencies

Method used

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  • Method for supporting full text retrieval system, and searching numerical value categorical data domain meanwhile
  • Method for supporting full text retrieval system, and searching numerical value categorical data domain meanwhile

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Embodiment Construction

[0075] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0076] The main difference between the method of the present invention and the prior art is that in the present invention, the fast indexing and retrieval of numerical data is realized by converting numerical data values ​​into ordered bit strings with a fixed length as index items. Since the bit string in the index item is of fixed length, the index item can be quickly located in the inverted index, and because the bit string is ordered, the numerical condition is a continuous interval in the inverted index. Thus, the support of the full-text retrieval system to the numerical data field is realized.

[0077] The present invention carries out experiment under common PC environment (CPU is P4 2.0G, internal memory is 1.0GB), realizes the full-text search system that supports numerical type data field according to the method of the present inven...

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Abstract

The method comprises: the fast index and retrieval of value type data is realized by converting the data value of value type data into the fixed-length ordered bit-string as the index item so as to realize the support of the full-text retrieval system to the value type data domain.

Description

technical field [0001] The invention belongs to the intelligent information processing technology, and in particular relates to a method for supporting a full-text retrieval system to simultaneously retrieve numerical data fields. Background technique [0002] With the rapid development of computer technology and network technology, the number of electronic documents has increased dramatically. How to quickly, comprehensively and accurately find the required information in this massive amount of information has become a common concern and a hot topic in the research field. Most electronic documents are unstructured text data written in natural language, and full-text retrieval technology is currently an important means of processing text data. [0003] There are many ways to implement full-text search, including inverted index, suffix array and signature file, etc. [0004] The general index correspondence is from "document number" to "all words in the document". The inve...

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 杨建武李超张阜东吴於茜
Owner NEW FOUNDER HLDG DEV LLC
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