JPH11134341A - System for displaying selection of descriptive information in hyper media description language - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an HTML description language selection display system for automatically selecting necessary parts from HTML description language, putting them together, displaying them, and quickly and efficiently retrieving a page on which truly necessary information is printed. SOLUTION: A character string including a keyword is retrieved by a character string retrieving part 13 from an HTML file obtained by an HTML obtaining part 12 from a URL inputted by an inputting part 11. Then a division tag included in this character string is found by a tag analyzing part 14, and the character string including the keyword is extracted by an information extracting part 15, and displayed on an outputting part 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hypermedia description language (hereinafter abbreviated as HTML: HyperText).
The present invention relates to a system for displaying an excerpt of descriptive information according to Markup Language, and particularly to a WWW (World W
The present invention relates to an HTML description information excerpt display system that excerpts and displays a portion related to a given keyword from homepage information described in HTML on ide Web).

[0002]

2. Description of the Related Art An information retrieval system called WWW has been constructed in the Internet which has been rapidly spreading recently. According to the WWW, various information and services are provided by a home page described in a language called HTML. It has been made to be.

[0003] At present, the number of homepages is enormous, and it is difficult for a user to find out what he or she desires from among them. So, in WWW,
For example, various search services are provided such that when a keyword or the like is input, a home page including the keyword is searched.

Further, according to the technology described in Japanese Patent Application Laid-Open No. Hei 9-171513, a user can easily recognize that a desired homepage has been opened.

[0005] Then, by performing a keyword search, a URL (Uniform Reso) of a corresponding homepage is obtained.
source locator, a kind of address)
Using this, a homepage is displayed by a WWW browser, and the user has obtained desired information.

[0006]

The above-described conventional homepage display system, that is, the HTML description information display system displays the homepage, that is, the full text of the HTML description information, and a large number of URLs are obtained by the above keyword search. Is obtained, it is necessary to display all the homepages with a WWW browser and visually search for a page on which really necessary information is posted.

An object of the present invention is to provide an HTML description information excerpt display system that can automatically extract necessary portions from a homepage, that is, HTML description information and collectively display them. .

[0008]

According to a first aspect of the present invention, there is provided an HTML description information excerpt display system, comprising: character string search means for searching a description string described in a hypermedia description language for a keyword character string including a specified keyword; Tag analysis means for analyzing a tag in the description information to detect a pre-designated division tag, and extracting the keyword character string from the description information based on the detected division tag and extracting the keyword string by a hypermedia description language It is configured to include information extracting means for shaping into information, and display means for displaying the extracted keyword character string.

The HTML description information excerpt display system according to a second aspect of the present invention is the HTML description information excerpt display system according to the first aspect, wherein the character string search means first deletes a tag from the description information and searches for a keyword character string when searching. Searching and restoring the deleted tag after the search.

The HTML description information excerpt display system according to a third aspect of the present invention is the HTML description information excerpt display system according to the first aspect, wherein the information extracting means includes a nearest pre-designated divided tag preceding the keyword and a nearest precedent keyword following the keyword. It is characterized in that a subsequent specified division tag is searched to extract a character string between the preceding specified division tag and the subsequent specified division tag.

The HTML description information excerpt display system according to a fourth invention is the HTML description information excerpt display system according to the third invention, wherein the information extracting means uses a character string delimiter tag when there are a plurality of character string blocks including the extracted keywords. It is characterized by one character string block.

According to a fifth aspect of the present invention, there is provided the HTML description information excerpt display system according to the third aspect of the present invention, wherein the information extracting means includes a step of: If there is a start tag at the end of the block, delete it, and otherwise add a corresponding missing tag unless there is a subsequent end tag corresponding to the preceding start tag in the string block. It is characterized by.

According to a sixth aspect of the present invention, there is provided the HTML description information excerpt display system according to the third aspect of the present invention, wherein the information extracting means indicates a tag indicating that the information is in the hypermedia description language and a header part of the information. It is characterized in that it is formed into excerpt information by a tag and a tag indicating the text of the information.

According to a seventh aspect of the present invention, there is provided the HTML description information excerpt display system according to the first aspect, wherein homepage information, which is description information in a hypermedia description language, is obtained via a network. Is created and displayed as excerpt information including the specified keyword.

[0015]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the HTML description information excerpt display system of the present invention.

As shown in FIG. 1, the HTML description information excerpt display system according to the present embodiment acquires an input unit 11 for inputting a URL and a keyword, and a corresponding HTML file received from the input unit 11 from a WWW server. HT
An ML acquisition unit 12; a character string search unit 13 that receives a keyword from the input unit 11 and receives an HTML file from the HTML acquisition unit 12 and searches the HTML file for a keyword character string; A tag analysis unit 1 that receives an HTML file for which search has been completed, searches for the tag, and searches for a tag that is often used to delimit a document structure around a keyword character.
4 and a keyword, and a portion surrounded by tags searched by the tag analysis unit 14 is extracted as a document block. If there are a plurality of document blocks, the information is extracted into an HTML file format that can be displayed together. Part 15
And an output unit 16 for displaying an HTML file obtained by the information extraction unit 15.

The H of this embodiment constituted by these components
The TML description information excerpt display system includes an input device 21 such as a keyboard shown in FIG. 2, a display 22 for displaying information, an input unit 11, an HTML acquisition unit 12, a character string search unit 13, a tag analysis unit 14, and information extraction. Unit 15, output unit 16
And the like for realizing the processing.

FIG. 3 is a flowchart showing the operation of the HTML description information excerpt display system of the present embodiment. 1 to 3
The operation of the HTML description information excerpt display system of the present embodiment will be described with reference to FIG.

First, the URL provided from the input device 21
The URL is passed to the HTML acquisition unit 12 and the keyword is passed to the character string search unit 13 by the input unit 11 mounted on the computer 23 (step 302).

The HTML acquisition unit 12 that has received the URL acquires a corresponding HTML file from the WWW server (step 303).

Next, the character string search unit 13 receives a keyword from the input unit 11 and an HTML file from the HTML acquisition unit 12, and performs a keyword search on the HTML file (step 304). At this time, it is preferable to remove the HTML tag and the comment part once before performing the search, perform the search, and return the tag and the comment part to the original place after the search. This is for tags and comments
When referring to a TML file, it is a part that is not touched by the eyes, and is not targeted for keyword search, and the presence of the keyword causes a malfunction in the search.

If there is no part corresponding to the keyword (N branch of step 305), the fact is notified to the output unit 16 and displayed (step 312).

If there is a portion that corresponds to the keyword (Y branch in step 305), the position of the keyword is stored and stored (step 306).

Next, the tag analysis unit 14 receives the HTML file for which the keyword search has been completed, and searches for a tag used as a delimiter of the document (step 307). Then, based on the found tag, the information extracting unit 15 extracts a part including the keyword and sets it as a document block (step 308). The process of creating a document block will be described later with reference to FIG. 4 (step 308).

It is checked whether there are a plurality of created document blocks (step 309). If there are a plurality of document blocks (Y branch of step 309), a line feed tag <BR> and a horizontal line tag <HR
> Into a single document block by interposing a delimiter tag such as> (step 310). This example will be described later with reference to FIG.

Next, an HTML tag (shown in FIG. 6B) is added before and after the document block to create an HTML file (step 311).

The resulting HTML file is displayed on the computer 23 from the output unit 16 (step 312).

FIG. 4 is a flowchart showing a process for extracting a document block including a keyword from an HTML file based on a tag.

A search is performed to determine whether a tag which is frequently used as a structural delimiter of the document set before the keyword in the HTML file is located at the nearest position before the keyword. (Step 40
2). Next, a search is made as to whether the tag set in the same manner is behind the keyword, and a tag located closest to the back of the keyword is searched (step 403).

Next, a portion including the tag found before and after the keyword is extracted (step 404).

The HTML tag used for normal division is shown in FIG.
As shown in (a), there are a start tag and an end tag, but as a result of extraction, there are cases where either start or end is insufficient or excessive, and these are checked (step 405). If there is an end tag at the beginning of the document block and if there is a start tag at the end of the document block, the tags are removed because they are excessive. In other cases, if the start tag and the end tag do not match, the tag is regarded as insufficient and a tag is added (step 406).

FIG. 5 is a flowchart showing an example of step 310 of the process of joining document blocks. When there are a plurality of document blocks, these are combined into one document block. That is, it is checked whether or not there is a next document block B following a certain document block A (step 502). If there is no document block B (N branch of step 502), this operation is finished. Branch), an <HR> tag is added to the end of the document block A (step 503), and then the next document block B is added (step 504).
R> tags and combine them into one document block.

FIG. 7 shows an example of a result obtained by extracting a document block including a keyword from an HTML file according to FIG.

As described above, the HT of the present embodiment
The ML description information excerpt display system can automatically extract the parts considered necessary from the homepage and display them together in one, and display the page with the really necessary information more quickly than before. In addition, the search can be efficiently performed.

In the description of the present embodiment, a WWW homepage is taken as an example. However, the present invention is not limited to this, and it is obvious that the present invention can be applied to an excerpt display of description information in an HTML description language. .

[0037]

As described above, the HTML of the present invention
The descriptive information excerpt display system can automatically extract necessary portions from descriptive information in HTML description language and collectively display them, and display a page on which really necessary information is posted. This has the effect that the search can be performed more quickly and efficiently.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of an HTML description information excerpt display system of the present invention.

FIG. 2 is a block diagram illustrating a configuration of an example of the HTML description information excerpt display system according to the embodiment;

FIG. 3 is a flowchart showing an example of the operation of the HTML description information excerpt display system of the present embodiment.

FIG. 4 is a detailed flowchart showing an information extraction operation of the HTML description information excerpt display system of the present embodiment.

FIG. 5 is a detailed flowchart of a document block joining operation of the HTML description information excerpt display system of the present embodiment.

FIG. 6A is a tag diagram showing an example of a divided tag, and FIG.
FIG. 4 is a tag diagram showing an example of an essential tag.

FIG. 7 is a diagram showing an example of a result of extracting a document block including a keyword from an HTML file.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Input part 12 HTML acquisition part 13 Character string search part 14 Tag analysis part 15 Information extraction part 16 Output part 21 Input device 22 Display 23 Computer

Claims (7)

[Claims] 1. A character string search means for searching for a keyword character string including a specified keyword from description information described in a hypermedia description language, and analyzing a tag in the description information to determine a pre-designated divided tag. Tag analyzing means for detecting, information extracting means for extracting the keyword character string from the descriptive information based on the detected divided tags, and shaping the extracted keyword character string into excerpt information in a hypermedia description language; Display means for displaying description information in a hypermedia description language. 2. The hypermedia description according to claim 1, wherein the character string search means deletes a tag from the description information, searches for a keyword character string, and restores the deleted tag after the search. Excerpt display system of descriptive information in language. 3. The information extracting means searches for a nearest preceding designated division tag preceding a keyword and a nearest succeeding designated division tag following a keyword, and searches for a portion including the preceding designated division tag and the succeeding designated division tag. 2. The system according to claim 1, wherein a character string is extracted. 4. The description information according to the hypermedia description language according to claim 3, wherein the information extracting means forms one character string block by a character string delimiter tag when there are a plurality of character string blocks including the extracted keyword. Excerpt display system. 5. The information extracting means deletes an end tag at the beginning of the extracted character string block and a start tag at the end of the character string block, and deletes the start tag in other cases than the character string block. 4. The system according to claim 3, further comprising adding a missing tag corresponding to the start tag preceding the start tag except when there is a subsequent end tag corresponding to the preceding start tag. 6. The information extracting means according to claim 3, wherein the information is formatted into excerpt information by using a tag indicating a hypermedia description language, a tag indicating a header part of the information, and a tag indicating a text of the information. Excerpt display system of description information in the described hypermedia description language. 7. The method according to claim 1, wherein homepage information, which is description information in a hypermedia description language, is obtained via a network, and excerpt information including a specified keyword of the homepage information is created and displayed. Excerpt display system of description information in the described hypermedia description language.