Abstract: An information processing device encodes a plurality of documents into a first plurality of encoded documents, respectively based on first encoding information in which a plurality of words and a plurality of first codes of a first code group are associated, words included in the plurality of documents and included in the first encoding information being encoded in the plurality of encoded documents. The information processing device performs frequency counts for each of a plurality of codes in the first encoded documents encoded in the first encoding. The information processing device encodes the plurality of first encoded documents into a plurality of second encoded documents respectively, utilizing a result of the frequency counts.

Abstract: An index creation device reads target text data therein and creates a bitmap index in which, with regard to each of a character or a word and a tag that appear in the target text data, an appearance position of each of the character or the word and the tag in text data is represented as bitmap data.

Abstract: An information processing device encodes a plurality of documents into a first plurality of encoded documents, respectively based on first encoding information in which a plurality of words and a plurality of first codes of a first code group are associated, words included in the plurality of documents and included in the first encoding information being encoded in the plurality of encoded documents. The information processing device performs frequency counts for each of a plurality of codes in the first encoded documents encoded in the first encoding. The information processing device encodes the plurality of first encoded documents into a plurality of second encoded documents respectively, utilizing a result of the frequency counts.

Abstract: A non-transitory computer-readable recording medium stores therein an encoding program that causes a computer to execute a process including: first creating a plurality of pieces of encoded data that are obtained by encoding a plurality of files by using a specific encoding format; second creating a plurality of encoded blocks that are obtained by dividing combined encoded data, the combined encoded data being obtained by combining the plurality of pieces of the encoded data into blocks with a fixed length; and third creating an index associated with each of the plurality of the encoded blocks.

Abstract: An index creation device reads target text data therein and creates a bitmap index in which, with regard to each of a character or a word and a tag that appear in the target text data, an appearance position of each of the character or the word and the tag in text data is represented as bitmap data.

Abstract: Information processing system includes a first certification device which executes a first temporary certification, creates a first temporary certificate, transmits it to an external device, carries out a first formal certification and creates the first formal certificate, a second certification device which executes a second temporary certification based on the first temporary certification, creates a second temporary certificate, transmits it to the external device, carries out a second formal certification and creates the second formal certificate, and a processing device which verifies a validity of the first formal certificate corresponding to the first temporary certificate and a validity of the second formal certificate corresponding to the second temporary certificate from the user, in response to a information processing request from the user and determines to execute the information processing corresponding to the information processing request based on the verification result.

Abstract: A non-transitory computer-readable recording medium stores therein an encoding program that causes a computer to execute a process including: identifying document structure of a first structured document; and encoding a character string in a specific hierarchy of the first structured document with an encoding rule corresponding to the specific hierarchy utilizing the document structure.

Abstract: A non-transitory computer-readable recording medium stores therein an encoding program that causes a computer to execute a process including: first creating a plurality of pieces of encoded data that are obtained by encoding a plurality of files by using a specific encoding format; second creating a plurality of encoded blocks that are obtained by dividing combined encoded data, the combined encoded data being obtained by combining the plurality of pieces of the encoded data into blocks with a fixed length; and third creating an index associated with each of the plurality of the encoded blocks.

Abstract: An information processing apparatus identifies a plurality of tag sections and a plurality of original text sections in input character data that includes a tag having a variable section. The information processing apparatus converts each of a plurality of tags included in the plurality of tag sections into a plurality of first-type codes that respectively corresponds to tag contents of the plurality of tags. The information processing apparatus converts original texts in the plurality of original text sections into a plurality of second-type codes. The information processing apparatus outputs an encoded data including the plurality of first-type codes and the plurality of second-type codes, positional relationships of the plurality of tags and the original texts in the input character data being maintained with corresponding plurality of first-type codes and corresponding plurality of second-type codes in the encoded data.

Abstract: An information processing apparatus inputs a character data string that includes therein a tag. The information processing apparatus judges whether a target character string includes a tag, the target character string being targeted for a first conversion process using the sliding window and being part of input character string data. If the target character string does not include any tags, the information processing apparatus performs the first conversion process on the target character string and moves the target character string to the sliding window. If the target character string includes the tag, the information processing apparatus performs a second conversion process that is different from the first conversion process.

Abstract: An information processing device encodes a plurality of documents into a first plurality of encoded documents, respectively based on first encoding information in which a plurality of words and a plurality of first codes of a first code group are associated, words included in the plurality of documents and included in the first encoding in being encoded in the plurality of encoded documents. The information processing device performs frequency counts for each of a plurality of codes in the first encoded documents encoded in the first encoding. The information processing device encodes the plurality of first encoded documents into a plurality of second encoded documents respectively, utilizing a result of the frequency counts.

Abstract: Information processing system includes a first certification device which executes a first temporary certification, creates a first temporary certificate, transmits it to an external device, carries out a first formal certification and creates the first formal certificate, a second certification device which executes a second temporary certification based on the first temporary certification, creates a second temporary certificate, transmits it to the external device, carries out a second formal certification and creates the second formal certificate, and a processing device which verifies a validity of the first formal certificate corresponding to the first temporary certificate and a validity of the second formal certificate corresponding to the second temporary certificate from the user, in response to a information processing request from the user and determines to execute the information processing corresponding to the information processing request based on the verification result.