Abstract: According to an embodiment, a search device includes a first storage to store therein a keyword group generated by grouping keyword candidates which are to be candidates for a search keyword according to a rule set in advance; a first acquisition unit to acquire a first recommended keyword which is the keyword candidate partially including an input string not yet been entered; a second acquisition unit to acquire a second recommended keyword which is included in the keyword group to which the first recommended keyword belongs and which is the keyword candidate other than the first recommended keyword; an output unit to output a search screen for displaying the first recommended keyword and the second recommended keyword in a selectable way; and a search unit to perform a search with the first recommended keyword or the second recommended keyword selected on the search screen as the search keyword.

Abstract: According to an embodiment, a document classification apparatus includes an extraction unit, a clustering unit, a classification unit, and a label assignment unit. The extraction unit is configured to extract feature words from documents. The clustering unit is configured to cluster the feature words into clusters so that a difference between the number of documents each including any one of the feature words belonging to one cluster and the number of documents each including any one of the feature words belonging to another cluster is equal to or less than a predetermined reference value. The classification unit is configured to classify the documents into the clusters so that each document belongs to the cluster to which the feature word included in the each document belongs. The label assignment unit is configured to assign a classification label to each cluster as a word representative of the corresponding feature words.

Abstract: According to one embodiment, an information search apparatus includes a generation unit, a selection unit, a search unit and a display unit. The generation unit generates recognition candidate character strings based on shapes of strokes and combinations of the shapes. The selection unit calculates reliability values for the recognition candidate character strings and selects search keys from the recognition candidate character strings. The search unit searches a database for second character strings including the search keys, and obtains one or more result character strings indicating search results of each of the search keys. The display displays the one or more result character strings corresponding to each of the search keys distinctively.

Abstract: According to one embodiment, a keyword presentation apparatus includes an extraction unit, a selection unit and a clustering unit. The extraction unit is configured to extract, as technical terms, morpheme strings, which are not defined in a general concept dictionary, from a document set. The selection unit is configured to evaluate relevancies between each of basic term candidates and the technical terms, and to preferentially select basic term candidates having high relevancies as basic terms. The clustering unit is configured to calculate weighted sums of statistical degrees of correlation between the basic terms based on the document set, to calculate conceptual degrees of correlation between the basic terms based on the general concept dictionary, and to cluster the basic terms based on the weighted sums.

Abstract: According to an embodiment, a document classification apparatus includes an extraction unit, a clustering unit, a classification unit, and a label assignment unit. The extraction unit is configured to extract feature words from documents. The clustering unit is configured to cluster the feature words into clusters so that a difference between the number of documents each including any one of the feature words belonging to one cluster and the number of documents each including any one of the feature words belonging to another cluster is equal to or less than a predetermined reference value. The classification unit is configured to classify the documents into the clusters so that each document belongs to the cluster to which the feature word included in the each document belongs. The label assignment unit is configured to assign a classification label to each cluster as a word representative of the corresponding feature words.

Abstract: According to an embodiment, a structured document management apparatus includes a document storage unit, a section title extracting unit, a relevance calculator, a document search unit, a section title selector, and a section title display controller. The section title extracting unit extracts the section titles from the structured document to create a section title list. The relevance calculator calculates degrees of conceptual relevance between the section title and words included in the section text corresponding to the section title for each of the section texts. The document search unit searches for the section text that includes the word identical to a search keyword. The section title selector selects the section title having a higher degree of relevance with the word identical to the search keyword more preferentially than the section title having a lower degree of relevance with the word identical to the search keyword.

Abstract: According to an embodiment, a search device includes a first storage to store therein a keyword group generated by grouping keyword candidates which are to be candidates for a search keyword according to a rule set in advance; a first acquisition unit to acquire a first recommended keyword which is the keyword candidate partially including an input string not yet been entered; a second acquisition unit to acquire a second recommended keyword which is included in the keyword group to which the first recommended keyword belongs and which is the keyword candidate other than the first recommended keyword; an output unit to output a search screen for displaying the first recommended keyword and the second recommended keyword in a selectable way; and a search unit to perform a search with the first recommended keyword or the second recommended keyword selected on the search screen as the search keyword.

Abstract: According to one embodiment, a content item search apparatus includes an extraction unit, a storage and a presentation unit. The extraction unit extracts one or more elements corresponding to a search word from one or more content items for each of classes, based on extraction rules indicating expressions to extract the elements indicating character strings required to specify relationships between the search word and the classes. The storage stores, as expression information, the extracted elements and the search word. The presentation unit generates one or more explanatory expressions associated with the search word based on generation rules and the expression information, and presents the explanatory expressions.

Abstract: A document searching system of an embodiment comprises a storage device storing structured document data, extracted phrase information of phrases in the structured document data which includes an identifier of the extraction-source structured document data containing each of the phrases and includes an attribute of each of the phrases in the extraction-source structured document data, and a mode determination rule including a search mode and a display format for each attribute. The document searching system of this embodiment inputs a search phrase, determines an attribute of the search phrase with reference to the extracted phrase information if the extracted phrase information contains a phrase matching the search phrase, determines a search mode for searching the structured document data and a display format of a search result with reference to the mode determination rule based on the determined attribute.

Abstract: According to one embodiment, an information search apparatus includes a generation unit, a selection unit, a search unit and a display unit. The generation unit generates recognition candidate character strings based on shapes of strokes and combinations of the shapes. The selection unit calculates reliability values for the recognition candidate character strings and selects search keys from the recognition candidate character strings. The search unit searches a database for second character strings including the search keys, and obtains one or more result character strings indicating search results of each of the search keys. The display displays the one or more result character strings corresponding to each of the search keys distinctively.

Abstract: According to one embodiment, a keyword presentation apparatus includes an extraction unit, a selection unit and a clustering unit. The extraction unit is configured to extract, as technical terms, morpheme strings, which are not defined in a general concept dictionary, from a document set. The selection unit is configured to evaluate relevancies between each of basic term candidates and the technical terms, and to preferentially select basic term candidates having high relevancies as basic terms. The clustering unit is configured to calculate weighted sums of statistical degrees of correlation between the basic terms based on the document set, to calculate conceptual degrees of correlation between the basic terms based on the general concept dictionary, and to cluster the basic terms based on the weighted sums.

Abstract: A feature-vector generation apparatus includes an input unit configured to input content data including at least one of video data and audio data, a generation unit configured to generate a feature vector, based on information indicating a time at which a characterizing state of the content data appears, the characterizing state being characterized by a change of the at least one of the video data and the audio data, and a storage unit configured to store the content data and the feature vector.

Abstract: An information retrieval system, includes speech recognition means for making speech recognition for a spoken question to generate first text information, generation means for modifying the first text information to generate second text information as a interrogative to make a search for an answer to the question, and search means for searching the answer from a document database by using the second text information.

Abstract: An apparatus for retrieving structured documents includes a first categorizing unit configured to categorize components into a first component of typical descriptions and a second component of atypical descriptions, based on statistics information for the components, a second categorizing unit configured to categorize the terms into a first term whose appearance ratio in the first component exceeds a threshold and a second term whose appearance ratio in the first component is not more than the threshold, an extraction unit configured to extract a set of structured documents each having the first component including the first term and the second component from the structured documents, and a ranking unit configured to rank the set of structured documents by a retrieval score calculating based o a relation between the second term and the second component.

Abstract: A document searching apparatus includes an input unit that inputs a search query for conducting a search in a structured document, the structured document being obtained by expressing elements included in a document in a hierarchical manner; a query converting unit that converts a query sentence constituting the search query and a search target element of the query sentence according to a predetermined rule so as to generate a new search query; a document searching unit that searches the structured document by using the new search query; and a search-result presenting unit that presents a result of the search.

Abstract: An information retrieval system, includes speech recognition means for making speech recognition for a spoken question to generate first text information, generation means for modifying the first text information to generate second text information as a interrogative to make a search for an answer to the question, and search means for searching the answer from a document database by using the second text information.

Abstract: A feature-vector generation apparatus includes an input unit configured to input content data including at least one of video data and audio data, a generation unit configured to generate a feature vector, based on information indicating a time at which a characterizing state of the content data appears, the characterizing state being characterized by a change of the at least one of the video data and the audio data, and a storage unit configured to store the content data and the feature vector.

Abstract: A system and device for sharing metadata that includes a plurality of client media data audio-visual devices and a server. Each of the plurality of client media data audio-visual devices is configured to display media data and metadata corresponding to the media data. The server is configured to exchange data among the plurality of client media data audio-visual devices. Each of the plurality of client media data audio-visual devices includes an audio-visual portion, a metadata storing portion, a communication portion, and a display portion. The audio-visual portion is configured to display the media data. The metadata storing portion is configured to store the metadata. The communication portion is configured to transmit the metadata to the server and to receive metadata from the server to be stored in the metadata storing portion. The display portion is configured to display a time relationship between the media data and the metadata based on time data included in the metadata and in the media data.

Abstract: An information sharing system using a computer so as to allow a plurality of users to share disclosed information, the system comprising, input section for receiving responses to the disclosed information from references of the disclosed information, evaluation information generation section for totalizing and processing the responses to generate evaluation information and storing the evaluation information after correlating it with the disclosed information, and evaluation information notifying section for presenting the evaluation information generated by the evaluation information generation section.

Abstract: A shared data management scheme capable of manipulating the shared data by the multi-threading without requiring the explicit programming of the lock in the program. In this scheme, different shared data identifiers are assigned to different threads, and different locks are set up for different shared data identifiers, so as to enable the detection of an access in violation to the locks among the accesses to the shared data for each thread separately. Preferably, the shared data required in an execution of each thread are mapped to a region exclusively allocated to each thread in a virtual space, in units of pages, a page protection of a memory management unit is set up with respect to each page mapping the shared data, and a lock for the shared data mapped to each page is automatically set up in response to an occurrence of an exception due to the page protection of the memory management unit caused by an access to the shared data mapped to each page from each thread.