JPH02297151A - Document editing device - Google Patents

Abstract

PURPOSE:To eliminate the designation of words and phrases being key words at every time and to reduce the burden of a user by providing a key word extraction part which automatically extracts the key words from the content of a document data buffer and a key word buffer holding the extracted key word. CONSTITUTION:The key word extraction part 11 automatically extracts the words and the phrases registered in dictionaries 5, 6 and 7 among document data by using given document data and the dictionaries 5, 6 and 7 used for KANA (Japanese syllabary)-KANJI (Chinese character) conversion. The dictionaries used at that time are set to be the dictionary 6 to which the user can register the words and the phrases, and the dictionary 7 to which technical terms are previously registered. Then, the efficiency of an extraction processing is improved, and the general words and the phrases which hardly come to the key words are prevented from being extracted. Furthermore, the extracted key word is held in the key word buffer 12. Thus, the key word included in given document data is automatically extracted without being designated as the key word at every input, and it can be used as the key word for generating the index of the document and for retrieving the document.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electronic document editing device such as a word processor, and in particular, to an electronic document editing device such as a word processor. This document relates to a document editing device that can be edited.

[Conventional technology]

Conventional document editing devices, as described in Japanese Patent Application Laid-open No. 131163/1983, extract words and phrases that serve as a table of contents and index of keywords by specifying them from a document using an input device.

[Problem to be solved by the invention]

The above-mentioned conventional technology does not take into account the simplification of input operations and the automation of keyword extraction in particular, and by specifying the words and phrases to be included in the table of contents and index at the time of document input, the device identifies the keywords. As a result, it is necessary to specify keywords at the time of input, making the document input operation complicated, and also when inputting a document in which the same word or phrase as a keyword appears in multiple places.

Since a designation operation is required each time the word is input, there is a problem in that the burden of the input operation increases.

An object of the present invention is to provide a document editing device that reduces the burden of operation by automatically extracting words and phrases that can be used as keywords from a document.

[Means to solve the problem]

The above purpose is to create a data input section from a keyboard or mouse, a kana-kanji conversion section that converts the input data into kanji using various dictionaries, and a document editing section that edits Japanese sentences mixed with kana-kanji. A document editing device comprising a document data buffer that holds a text that has been read, and a display control unit that displays this text on a display, a keyword extraction unit that automatically extracts keywords from the contents of one document data buffer, and an extracted keyword. This is accomplished by a document editing device equipped with a keyword buffer that holds
In addition, the keyword extraction section improves extraction efficiency by utilizing the dictionary used for kana-kanji conversion to extract keywords, and by extracting character strings that match specific rules, such as consecutive katakana characters, as keywords. This is accomplished by a document editing device.

[Effect]

The above document editing device automatically extracts words registered in the dictionary from the document data using the document data given by the keyword extraction unit and the dictionary used for kana-kanji conversion. There is a dictionary in which users can register words and phrases (User Dictionary), and a dictionary in which technical terms can be registered in advance.
By using a recorded dictionary (technical term dictionary), we can improve the efficiency of the extraction process, avoid extracting common words that are difficult to use as keywords, and also keep the extracted keywords in the keyword buffer. , is used to recognize that the same word is a keyword without referring to a dictionary when the same word is found in a document, and is also used when a string of characters matches a specific rule, such as consecutive katakana characters. Because it automatically extracts keywords without referring to a dictionary, the keywords included in the given document data are automatically extracted without being specified as keywords each time they are input, and multiple identical words are treated as the same. The extracted keywords can be used to create document indexes and as keywords for document searches.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 is a functional block diagram showing an embodiment of a document editing device according to the present invention. In FIG. 1, 1 is a keyboard, 2 is an input control unit, 3 is a document editing device, 4 is a kana-kanji conversion unit, 5 is a basic dictionary, 6 is a user dictionary, 7 is a technical term dictionary, 8 is a display control unit, 9 is a display, 10 is a document data buffer, 11 is a keyword extractor, and 12 is a keyword buffer.

With the above configuration, one document is input from the keyboard 1 and processed by the document editing section 3 via the input control section 2. This data that is normally input is alphanumeric or kana character codes, and in order to generate Japanese sentences mixed with kana and kanji from these code strings, currently commercially available word processors and document editing devices use a kana-kanji conversion method. . The kana-kanji conversion unit 4, the basic dictionary 5 of various dictionaries, the user dictionary 6, and the technical term dictionary 7 are used to generate Japanese sentences mixed with kana-kanji characters from the above-mentioned kana character code string. The generated Japanese text data is displayed on the display via the display control section 8, and is also stored and held in the document data buffer 10.

Next, the keyword extraction unit 11 reads Japanese text data from the document data buffer 10 and refers to the user dictionary 6 and technical term dictionary 7 from this character string data, thereby matching words registered in the dictionary. Words are extracted and registered in the keyword buffer 12. Furthermore, when registered as a keyword, the same word or phrase in a document can be determined by whether it exists in the keyword buffer 12 without referring to a dictionary. On the other hand, certain rules, such as consecutive katakana characters, can be extracted as a dictionary or registered keyword. Therefore, the keyword extraction unit 11
The process to be executed is summarized as follows.

(1) Extract character strings that match a specific rule (continuous katakana character strings, etc.) as keywords.

(2) In cases where (1) above is not applicable, if the target phrase has already been registered in the keyword buffer 12, this is also extracted as a keyword.

(3) If the above (2) does not apply, if the target phrase is in the user dictionary 6 or technical term dictionary 7, it is extracted as a keyword.

Now, as shown in (2) above, when the same word appears in multiple places in a document, each word needs to be correctly grasped in the keyword buffer 12.

This is because when keywords registered in the keyword buffer 12 are used to generate an index, it is necessary to restore and display how many pages and where of the document the word appears.

On the other hand, the number of places in which the same word appears in the same document depends on each case, and this is managed by the data structure shown in FIG.

FIG. 2 is an explanatory diagram of the data structure of the keyword buffer 12 of FIG. 1. In FIG. 2, keyword extraction unit 1
The character string of the keyword extracted in step 1 is assigned to the keyword holding section 12a of the keyword buffer 12, and the position in the document where the word appears, that is, the page number, and the paragraph number (the number of paragraph in the page) are stored. data unit tZ indicating the line number (indicating the number of the line in the relevant paragraph), and the column number (indicating the number of the character in the relevant line)
It is paired with a pointer 12b pointing to point a. This data unit 12c also has a pointer 12d that points to the next data unit 12e having the same structure, and when the same word or phrase is seen in a document more than once, the pointer 12b or 12d is used to point to the next data unit 12e with the same structure. A data unit 12c indicating a position within the data unit 12c.

12e can be connected one after another.

FIG. 3 is a functional block diagram showing another embodiment of the document editing device according to the present invention. In Fig. 3, while the embodiment in Fig. 1 involves the procedure of first creating document data and then extracting keywords from the document data, the embodiment in Fig. 3 performs kana-kanji conversion processing and keyword extraction. The purpose and function of each block with the same reference numerals as in FIG. 1 are the same as in the embodiment shown in FIG. , neither the basic dictionary 5, the user dictionary 6, nor the technical term dictionary 7 is referred to. Alternatively, even for words that have been confirmed to be converted by the kana-kanji converter 4, if the conversion is performed by the user dictionary 6 or the technical term dictionary 7, keywords will be extracted from information about the converted words and their positions in the document. Section 12. Further, processing other than using a dictionary, such as extraction processing using specific rules, is applied in exactly the same manner as in FIG. 1.

The operation will be explained based on an example in which the following sentence is input with the above configuration.

"The sampled values are calculated using the least squares method...
``...'' When creating a sentence like this, the following is generally input using the keyboard 1 using kana characters.

``By converting the sampled Japanese characters to the original...'' Here, the conversion operation is performed in the kana-kanji conversion unit 4, and the correct conversion result as shown at the beginning can be obtained.

At this time, since the first six characters "sampling" are consecutive katakana characters, they are first extracted as a keyword by the keyword extraction unit 11. Next, "sample value" or "least squares method" is used in the user dictionary 6 or technical term dictionary 7.
is registered in , and when it is converted using it, the keyword extraction unit 11 determines that it is a keyword. Here, the NI phrases, which are generally keywords in documents, are often terms with special meanings, so instead of using the basic dictionary 5, the terminology dictionary 7 or the user independently registers the phrases. It is often found in the user dictionary 6.

Therefore, there is a reason why dictionaries, especially the technical term dictionary 7 and the user dictionary 6, are used for keyword extraction according to the present invention.

〔Effect of the invention〕

According to the present invention, it is possible to automatically extract keyword words from a document after the document is created or along with the kana-kanji conversion process during the document creation, thereby reducing the burden on the user. In addition, since existing dictionaries are used, new costs can be minimized.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram showing one embodiment of the document editing device according to the present invention, FIG. 2 is an explanatory diagram of the data structure of the keyword buffer in FIG. 1, and FIG. 3 is another embodiment of the document editing device according to the present invention. FIG. 2 is a functional block diagram illustrating an example. 1...Keyboard, 2...Input control section, 3...Document editing section, 4...Kana-kanji conversion section, 5...Basic dictionary, 6...User dictionary, 7...Special terminology Dictionary, 8...
- Display control unit, 9... Display, 10... Document data buffer, 11... Keyword extraction unit, 12.
...Keyword buffer.

Claims (1)

[Claims] 1. A data input section from a keyboard or mouse, a kana-kanji conversion section that converts the input data into kanji using various dictionaries, and a document editing section that edits Japanese sentences mixed with kana-kanji. A document editing device comprising a document data buffer that holds created sentences, and a display control section that displays the sentences on a display, a keyword extraction section that automatically extracts keywords from the contents of the document data buffer. , and a keyword buffer that holds extracted keywords. 2. A claim characterized in that the keyword extraction unit utilizes a dictionary used for kana-kanji conversion to extract keywords, thereby increasing extraction efficiency without requiring the user to create a new dictionary for keyword extraction. 1. The document editing device according to 1. 3. The document editing device according to claim 1, wherein the keyword extraction section extracts a character string that matches a specific rule, such as consecutive katakana characters, as a keyword.