JP2010102444A - Character string conversion device with dictionary search function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a character string conversion device for registering an extended dictionary for use without making it necessary for a user to perform any operation to compare words registered in the extended dictionary with words included in a text prepared in the past or a text browsed in the past for confirmation. <P>SOLUTION: An unknown word information extraction part (11) extracts words which are not registered in a basic dictionary stored in a basic dictionary storage part (16) as unknown words from text information, and a dictionary selection part (13) calculates the number of registration of unknown words in each extended direction, and compares the respective numbers of registration with one another, and selects the prescribed numbers of extended dictionaries in the order of the larger number of registration of unknown words, and a character string conversion part (10) performs character string conversion based on the searched extended dictionary. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a character string converter, and more particularly to a character string converter with a dictionary search function.

  Many mobile communication terminals such as mobile phones have a function such as an electronic mail for transmitting and receiving character string information. In addition, a mobile communication terminal having such a function generally has a text editor function for creating character string information to be transmitted.

  The text editor function converts input signals from a keyboard or the like into character codes, displays character images corresponding to the character codes on the screen of the mobile communication terminal, and further inputs an input character code string ( The conversion candidates to other character strings (hereinafter referred to as character strings) are displayed on the screen, an appropriate one of those conversion candidates is selected by an operation such as a keyboard, and the selected candidate is confirmed as conversion, It has a character string conversion function to be inserted into the character string information being edited.

  The character string conversion function is a kana-kanji conversion function in which the input character string is a reading of hiragana or katakana, and the conversion candidate is a kana-kanji mixed sentence corresponding to the reading, or a conversion candidate having a reading that matches the reading forward In some cases, a predictive conversion function or the like is provided.

  The character string conversion function generally performs processing using a dictionary database in which the relationship between an input character string and a conversion candidate character string is converted into data.

  In general, in consideration of user convenience, the character string conversion function allows data of several input character strings-conversion candidate character strings to be registered in advance in the dictionary database.

  When registering new relation data in the dictionary database, there is a method in which the user inputs the relation data one by one using a keyboard or the like. According to this method, when there are a plurality of relation data to be registered, a plurality of operations are repeated. Etc. must be done.

  On the other hand, an extended dictionary in which a plurality of relational data is registered in advance may be distributed from a server on the network, and the user downloads the extended dictionary and registers it in the character string conversion device. Character string conversion candidates can be output with reference to the dictionary database and the extended dictionary. In many cases, such extended dictionaries usually register a plurality of words related to a specific field. In Patent Document 1, when a user replies to an existing mail, the content of the sentence is analyzed for the e-mail that is the subject of the reply process, the type of sentence is determined, and used in reply mail creation An apparatus and method for determining the type of Japanese conversion dictionary to be performed are described.

JP 2008-188631 A

  In general, a plurality of words are registered in the extended dictionary. In character string conversion, when multiple related data with the same input character string are registered, it is customary to display all of them or only a predetermined number in the order of priority on the screen as conversion candidates. If there are many, it may not be displayed on the screen at once. Therefore, if words that are not used by the user are included in the extended dictionary database, these words are displayed on the screen, and other conversion candidates are not displayed on the screen due to restrictions on the display area of the screen. Can occur.

  Therefore, when a user registers to use an extended dictionary, in order to avoid the above-mentioned problem, the frequency of use of words registered in each extended dictionary is examined, and an extended dictionary is selected and registered. Will do. As for the extended dictionary, a list of registered words can generally be referred to by a terminal device or the like. However, in order for the user to objectively determine how often a registered word is used during character string conversion, words included in sentences created by the user in the past or words read in the past It is necessary to make a judgment by comparing with words registered in the extended dictionary, which is a very complicated operation.

  Further, in the method described in Patent Document 1, since it is necessary to define the document type in advance and to define the type related to the sentence, the extended dictionary newly added by the user is the same as the extended dictionary. The work of associating with the sentence type is necessary.

  The present invention has been made in view of such circumstances, and a work for comparing and confirming a word registered in an extended dictionary by a user and a word included in a sentence created in the past or a sentence browsed in the past Provided is a character string conversion device capable of registering using an extended dictionary without the need for a password.

  The character string conversion device of the present invention evaluates how often each word registered in the extended dictionary is used in a sentence created or browsed by the user in the past, and registers the use of the extended dictionary To do.

  A character string conversion apparatus according to the present invention includes a sentence information storage unit that stores sentence information, an unknown word information extraction unit that extracts unknown word information from the sentence information, a character string conversion unit that performs character string conversion, and the character string. A basic dictionary storage unit that stores a basic dictionary referred to by the conversion unit, an extended dictionary storage unit that stores an extended dictionary referred to by the character string conversion unit, and a character string from the extended dictionary stored in the extended dictionary storage unit A character string conversion device including a dictionary selection unit that selects an extended dictionary to be used for conversion, wherein the unknown word information extraction unit is not registered in the basic dictionary stored in the basic dictionary storage unit The word is extracted from the sentence information as an unknown word, and the dictionary selection unit calculates the number of registrations of the unknown word in each extended dictionary, compares the number of registrations, and determines a predetermined number in order of the number of registrations of unknown words. Select as many extended dictionaries as above String conversion unit, and performs string conversion based on the selected extended dictionary. Here, the predetermined number is the number of extended dictionaries that can be registered in the character string conversion device that is predetermined in the character string conversion device or that can be selected by the user.

  The unknown word information extraction unit may extract an unknown word while allowing duplication when extracting the unknown word from the sentence information.

  The sentence information storage unit stores sentence information including sender information and / or receiver information, and the unknown word information extraction unit is configured to extract an unknown word from sentence information including predetermined sender information and / or receiver information. May be extracted.

  The sentence information storage unit stores sentence information including transmission time information and / or reception time information, and the unknown word information extraction unit is unknown from sentence information including transmission time and / or reception time within a predetermined period. Words may be extracted.

  A display unit may be further provided, and in the character string conversion, the display unit may display a character string representing the selected extended dictionary.

  The display unit registers the conversion candidate character strings registered in the selected extended dictionary and included in the extracted unknown word among the conversion candidate character strings output by the character string conversion unit, You may display by the display method different from a conversion candidate character string.

  The character string conversion device according to the present invention does not require the user to compare and confirm the words registered in the extended dictionary with the words created in the past and the words included in the sentences browsed in the past.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing an example of the configuration of a character string conversion apparatus according to the present invention. The character string converter includes a CPU (Central Processing Unit) 1, a storage device 2, an input interface 3, an output interface 4, and an external communication interface 5. These elements are connected to each other via a system bus, and perform data transmission / reception and processing.

  The storage device 2 includes a work area 6, a program storage area 7, and a data storage area 8.

  The work area 6 is a storage area required when the CPU 1 executes the program stored in the program storage area 7.

  In the program storage area, a control program 9, a character string conversion program 10, an unknown word extraction program 11, a text data management program 12, an extended dictionary evaluation program 13, and a screen display program 14 are stored. When the CPU 1 executes each program, dictionary search processing and character string conversion processing are performed.

  The data storage area 8 includes a text data storage area 15, a basic dictionary data storage area 16, and an extended dictionary data storage area 17.

  The text data storage area 15 stores one or a plurality of text data. Each sentence data includes character string information. Each sentence data may include sender information, receiver information, transmission time information, reception time information, and the like separately from the character string information.

  The basic dictionary data storage area 16 stores one or a plurality of basic dictionary data. Each basic dictionary data includes data in which an input character string is associated with a conversion candidate character string corresponding to the input character string.

  The extended dictionary data storage area 17 stores one or a plurality of extended dictionary data. Each extended dictionary data includes data in which an input character string is associated with a conversion candidate character string corresponding to the input character string.

  When the power is turned on, the CPU 1 executes the control program 9 stored in the program storage area 7 of the storage device 2, and each program stored in the program storage area 7 of the storage device 2 according to the input from the input interface 3. Execute.

  The storage device 2 includes a semiconductor memory, a magnetic disk and a magnetic disk drive, an optical disk, an optical disk drive, and the like.

  The input interface 3 is connected to an external device for operating a terminal such as a keyboard, a touch panel, or a mouse and inputting a character string.

  The output interface 4 is connected to a display device such as a CRT (Cathode Ray Tube) or a liquid crystal display.

  The external communication interface 5 communicates with the outside wirelessly or by wire, and transmits / receives document data such as electronic mail.

  The character string conversion program 10 is a program for creating input character string information from information input through the input interface 3 and performing character string conversion on the input character string information. The character string conversion process is performed with reference to the basic dictionary database and the extended dictionary database registered for use. Also, one or more conversion candidates are created for the input character string.

  The unknown word extraction program 11 reads the sentence data stored in the sentence data storage area, divides the character string in the sentence data, and generates a word string. A morpheme analysis process is performed for dividing the character string. Then, the character string of each word included in the word string is compared with the conversion candidate character string in the basic dictionary. If there is no matching conversion candidate character string, it is determined that the word is not registered in the basic dictionary. Then, the unregistered word is added to the unknown word list. When the comparison is completed for all the words in the sentence data, an unknown word list is output.

  The unknown word extraction program 11 may add a word in the unknown word list while permitting duplication of words in the process of adding the word to the unknown word list. For example, it is assumed that the text data includes a plurality of character strings “archive” and the word “archive” is not registered in the basic dictionary. In this case, the unknown word extraction program 11 may add the word “archive” to the unknown word list by the number included in the sentence data. As a result, each unknown word is registered in the unknown word list by the number of appearances in the sentence, and is therefore weighted by the number of appearances. Therefore, although there are few types of unknown words included in the text data, even when many of these unknown words appear repeatedly, the expanded dictionary evaluation program 13 is higher as a conversion candidate at the time of character string conversion. The extended dictionary can be selected so that it appears with probability.

  Further, when the unknown word extraction program 11 reads the text data, the sender information included in the text data is referred to and only the text data including the predetermined sender information or the sender information is read. Good. This makes it possible to select an extended dictionary that includes candidates that are used more frequently when creating a text for a specific destination. For example, in the exchange of e-mail with a specific partner, a word included in an e-mail sent to the partner in the past or an e-mail received from the partner is often used. Therefore, when creating mail text for the other party, an extended dictionary evaluation program based on an unknown word list generated from an e-mail received from the other party or a word extracted from the mail sent to the other party If 13 selects and registers an extended dictionary, there is an advantage that words having a higher probability of use can be displayed as candidates in character string conversion at the time of sentence creation.

  In addition, when the unknown word extraction program 11 reads the text data, the transmission date / time or the reception date / time included in the text data may be referred to so that only text data within a predetermined period may be read. For example, when creating text data such as e-mail, words related to temporary trends may be used. In such a case, an unknown word list is read by reading e-mails sent and received within a specific period. When the extended dictionary evaluation program 13 selects and registers an extended dictionary based on the unknown word list, there is an advantage that words related to the fashion in that period can be displayed as conversion candidates with higher probability.

  The text data management program 12 is a program for storing text data received via the external communication interface 5 in the text data storage area 15 and retrieving text data from the text data storage area 15.

  The screen display program 14 is a program for displaying conversion candidate character strings on the screen in character string conversion.

  The screen display program 14 may display a character string representing an extended dictionary registered for use on the screen during character string conversion. Thereby, the user has an advantage that the dictionary registered for use by the extended dictionary evaluation program 13 can be identified by visually recognizing the character string.

  In addition, when displaying conversion candidates based on an extended dictionary in character string conversion, unknown word candidates extracted from the sentence may be displayed so as to be distinguishable from other candidates. Specifically, changing the font of the candidate character string, underlining the candidate character string, surrounding the candidate character string with a frame, changing the display color of the candidate character string or candidate character string background with other candidate character strings, etc. There is. Thereby, the user can discriminate visually which unknown word was registered by the extended dictionary among the unknown words used in the sentence.

  FIG. 2 is a flowchart showing the flow of processing of the program stored in the program storage area 7 of the character string conversion device shown in FIG.

  First, in step S <b> 101, the text data management program 12 reads text data from the text data storage area 15.

  Next, in step S102, the unknown word extraction program 11 extracts words that are not registered in the basic dictionary stored in the basic dictionary data storage area 16 from the read text data as an unknown word list.

  Next, in step S103, the extended dictionary evaluation program 13 determines whether there is an unchecked extended dictionary.

  If there is an unchecked extended dictionary, in step S104, the extended dictionary evaluation program 13 selects one extended dictionary therefrom.

  Next, in step S105, the extended dictionary evaluation program 13 calculates how many words are registered in the selected extended dictionary among the words included in the unknown word list.

  Next, in step S106, the number of unknown word registrations between the current registered extended dictionary candidate and the current check target extended dictionary is compared. If more unknown words in the unknown word list are registered in the current check target extended dictionary than the current registered extended dictionary candidate, the registered extended dictionary candidate is replaced with the current check target extended dictionary in step S107. . Further, it is determined that the current check target extended dictionary has been checked, and the process returns to step S103 again.

  Thereafter, the processing from step S103 to step S107 is repeated, and if it is determined in step S103 that there is no unchecked dictionary, the process proceeds to step S108, where the current registered extended dictionary candidate is registered for use.

  FIG. 3 is a flowchart for explaining the flow of processing in which the extended dictionary evaluation program 13 calculates the number of unknown words registered in the check target dictionary in the unknown word list in step S105 of FIG.

  First, in step S201, the unknown word registration number cnt is initialized to zero. I representing the index of an unknown word to be checked is initialized to zero. In the unknown word list, as shown in FIG. 4, it is assumed that the index from 0 to (n-1) is assigned to each unknown word, where the top index is 0 and the number of registrations is n.

  In step S202, it is determined whether i is smaller than the number of unknown word lists registered.

  If it is smaller than the number registered in the unknown word list, the process proceeds to step S203, and whether all the character strings registered in the extended dictionary indicate whether the character string of the i-th unknown word in the unknown word list is registered in the extended dictionary. And the character string of the unknown word.

  If registered, 1 is added to cnt in step S204, and 1 is added to the index to be checked in step S205. If not registered, the process proceeds to step S205 as it is.

  Thereafter, the processing from step S202 to step S205 is repeated until i reaches the number of registrations in the unknown word list, and when it is reached, cnt is returned as the number of registrations in the unknown word list in the check target dictionary.

    As described above, the character string conversion device according to the present invention evaluates how frequently each word registered in the extended dictionary is used in a sentence created or browsed by the user in the past. Therefore, there is an advantage that the user does not need to compare and confirm the words registered in the extended dictionary with the words created in the past and the words included in the past viewed. .

  Further, in the extended dictionary evaluation process, there is no need to associate the extended dictionary with the document type, and there is an advantage that the association work is not required when the user downloads the extended dictionary.

  The present invention can be used for a character string converter.

It is a block diagram which shows an example of a structure of the character string converter of this invention. It is a flowchart which shows the flow of a process of the program stored in the program storage area 7 of a character string converter. It is a flowchart explaining the flow of a process in which the extended dictionary evaluation program 13 calculates the number of unknown words registered in the check target dictionary in the unknown word list. It is a figure which shows an example of an unknown word list.

Explanation of symbols

1 CPU
2 storage device 3 input interface 4 output interface 5 external communication interface 6 work area 7 program storage area 8 data storage area 9 control program 10 character string conversion program 11 unknown word extraction program 12 sentence data management program 13 extended dictionary evaluation program 14 screen display Program 15 Text data storage area 16 Basic dictionary data storage area 17 Extended dictionary data storage area

Claims (6)

A text information storage unit for storing text information;
An unknown word information extraction unit that extracts unknown word information from sentence information;
A character string conversion unit that performs character string conversion;
A basic dictionary storage for storing a basic dictionary referred to by the character string converter;
An extended dictionary storage for storing an extended dictionary referred to by the character string converter;
A character string conversion device including a dictionary selection unit that selects an extended dictionary to be used in character string conversion from the extended dictionary stored in the extended dictionary storage unit,
The unknown word information extraction unit extracts words that are not registered in the basic dictionary stored in the basic dictionary storage unit as unknown words from the sentence information,
The dictionary selection unit calculates the number of unknown words registered in each extended dictionary, compares each registered number, and selects a predetermined number of extended dictionaries in descending order of the number of unknown word registered,
The character string conversion device, wherein the character string conversion unit performs character string conversion based on the selected extended dictionary.   The character string conversion device according to claim 1, wherein the unknown word information extraction unit extracts an unknown word while allowing duplication when extracting the unknown word from the sentence information. The sentence information storage unit stores sentence information including sender information and / or receiver information,
The character string conversion device according to claim 1, wherein the unknown word information extraction unit extracts an unknown word from sentence information including predetermined sender information and / or receiver information. The sentence information storage unit stores sentence information including transmission time information and / or reception time information,
4. The character string according to claim 1, wherein the unknown word information extraction unit extracts an unknown word from sentence information including a transmission time and / or a reception time within a predetermined period. 5. Conversion device. A display unit;
5. The character string conversion device according to claim 1, wherein in the character string conversion, the display unit displays a character string representing the selected extended dictionary. 6.   The display unit registers the conversion candidate character strings registered in the selected extended dictionary and included in the extracted unknown word among the conversion candidate character strings output by the character string conversion unit, 6. The character string conversion device according to claim 5, wherein the character string conversion device displays the character string using a display method different from the conversion candidate character string.

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