Document searching apparatus, method thereof, and record medium thereof

A document index creating apparatus for creating an index of a document group having a link relation, comprising:

• a link importance assigning unit assigning a link importance to the document based on the link relation;
• a keyword extracting unit extracting a keyword from the document;
• an index creating unit creating an index for accessing the keyword based on pronunciation characters or spelling of the extracted keyword;
• and
• an accessing unit accessing document assigned the link importance corresponding to the keyword when the pronunciation characters or spelling of the keyword are selected from the index.

A document index creating apparatus for creating an index of a document group having a link relation, comprising:

• a link importance assigning unit assigning a link importance to the document depending on whether or not URLs of the documents are similar;
• a keyword extracting unit extracting a keyword from the document;
• and
• an index creating unit creating an index for accessing the document corresponding to pronunciation characters or spelling of the extracted keyword based on the link importance.

A link list creating system for creating a link list for a document group having a link relation, comprising:

• a collecting unit collecting the documents from a network;
• a link importance assigning unit assigning a link importance as of the document an importance calculated based on the link relation to the document;
• a URL character string determining unit determining a URL having a particular characteristic of a character string from the documents;
• and
• an index creating unit creating a link list for listing less than a predetermined number of links to the documents based on the link importance and the particular characteristic of the character string of the URL.

A link list creating method for creating a link list for a document group having a link relation, comprising the steps of:

• colleting the document from a network;
• assigning a link importance which indicates inmortance of the document to the document based on the link relation;
• determining a URL having a particular characteristic of a character string from the URLs of each document;
• and
• creating a link list for listing less than a predetermined number of links to the document based on the link importance and the particular characteristic of the character string of the URL.

A computer readable record medium for recording a program that causes a computer to execute a process for creating a link list for a document group having a link relation, the program comprising the steps of:

• colleting documents from a network;
• assigning a link importance which indicates inmortance of the document to each document based on the link relation;
• determining a URL having a particular characteristic of a character string from the URLs of documents;
• and
• creating a link list for listing less than a predetermined number of links to the documents based on the link importance and the particular characteristic of the character string of the URL.