Abstract: In a wireless terminal of a network system in which routes amongst a plurality of nodes are dynamically adjusted according to an environment, the wireless terminal forms a target node forming a final destination of data sent from a sending node. The wireless terminal computes a partitioning probability indicating whether transmission fails by partitioning a location with respect to each pair of a sending source node and a sending destination node, based on a partitioning point set included in a packet received from a relaying node within the network system, wherein the partitioning point set includes partitioning points where nodes partition routes within the network system, and generates an importance representing an effect of a failure of the relaying node on the network system by a transmission failure probability.

Abstract: A wireless terminal device includes a transmitter configured to receive a first packet including path information and a first number of paths of each path and a second packet including a second number of paths between a transmission origin wireless terminal device and a destination wireless terminal device, which is sent from the transmission origin wireless terminal device, and a processor configured to multiply the first number of the paths between an own wireless terminal device and the transmission origin wireless terminal device with another first number of paths between the own wireless terminal device and the destination wireless terminal device and calculate a number of alternative paths of the own wireless terminal device by subtracting the multiplied value from the second number of the paths which is received.

Abstract: In a network including a plurality of nodes, a node transmits data to another node, receives data from another node, and stores a communication history between a plurality of other nodes and the node itself. When an acknowledge response to data transmitted to a first node among the plurality of other nodes is not received, the node generates a duplicate data of the transmitted data. When a duplication report indicating detection of duplicate data transmitted to a second node among the plurality of other nodes has been received from one of the plurality of other nodes, the node refers to the communication history, and identifies the first node as a cause of generation of the duplicate data. Thereafter, the node generates a check request that include a communication history between the first node and the node itself and that requests the first node to check the communication history.

Abstract: In a network including a plurality of nodes, a node transmits data to another node, receives data from another node, and stores a communication history between a plurality of other nodes and the node itself. When an acknowledge response to data transmitted to a first node among the plurality of other nodes is not received, the node generates a duplicate data of the transmitted data. When a duplication report indicating detection of duplicate data transmitted to a second node among the plurality of other nodes has been received from one of the plurality of other nodes, the node refers to the communication history, and identifies the first node as a cause of generation of the duplicate data. Thereafter, the node generates a check request that include a communication history between the first node and the node itself and that requests the first node to check the communication history.

Abstract: A processor of a gateway node device determines whether to divide a first tree included in a tree structure formed by sensor node devices intermittently operating and the gateway node device as a root of the tree structure. The first tree includes a first node device as a root. The processor divides, upon determining to divide the first tree, the first tree into a second tree and a third tree at a second node device different from the first node device. The second node device is a root of the second tree. The second node device is a child node of the third tree. The processor assigns active time periods within an intermittent operation cycle to the respective second and third trees. The assigned active time periods are mutually disjoint. The processor notifies sensor node devices included in the first tree of the assigned active time periods.

Abstract: In a network including a plurality of nodes, a node transmits data to another node, receives data from another node, and stores a communication history between a plurality of other nodes and the node itself. When an acknowledge response to data transmitted to a first node among the plurality of other nodes is not received, the node generates a duplicate data of the transmitted data. When a duplication report indicating detection of duplicate data transmitted to a second node among the plurality of other nodes has been received from one of the plurality of other nodes, the node refers to the communication history, and identifies the first node as a cause of generation of the duplicate data. Thereafter, the node generates a check request that include a communication history between the first node and the node itself and that requests the first node to check the communication history.

Abstract: In a network including a plurality of nodes, a node transmits data to another node, receives data from another node, and stores a communication history between a plurality of other nodes and the node itself. When an acknowledge response to data transmitted to a first node among the plurality of other nodes is not received, the node generates a duplicate data of the transmitted data. When a duplication report indicating detection of duplicate data transmitted to a second node among the plurality of other nodes has been received from one of the plurality of other nodes, the node refers to the communication history, and identifies the first node as a cause of generation of the duplicate data. Thereafter, the node generates a check request that include a communication history between the first node and the node itself and that requests the first node to check the communication history.

Abstract: In a wireless terminal of a network system in which routes amongst a plurality of nodes are dynamically adjusted according to an environment, the wireless terminal forms a target node forming a final destination of data sent from a sending node. The wireless terminal computes a partitioning probability indicating whether transmission fails by partitioning a location with respect to each pair of a sending source node and a sending destination node, based on a partitioning point set included in a packet received from a relaying node within the network system, wherein the partitioning point set includes partitioning points where nodes partition routes within the network system, and generates an importance representing an effect of a failure of the relaying node on the network system by a transmission failure probability.

Abstract: In a network including a plurality of nodes, a node transmits data to another node, receives data from another node, and stores a communication history between a plurality of other nodes and the node itself. When an acknowledge response to data transmitted to a first node among the plurality of other nodes is not received, the node generates a duplicate data of the transmitted data. When a duplication report indicating detection of duplicate data transmitted to a second node among the plurality of other nodes has been received from one of the plurality of other nodes, the node refers to the communication history, and identifies the first node as a cause of generation of the duplicate data. Thereafter, the node generates a check request that include a communication history between the first node and the node itself and that requests the first node to check the communication history.

Abstract: A wireless terminal device includes a transmitter configured to receive a first packet including path information and a first number of paths of each path and a second packet including a second number of paths between a transmission origin wireless terminal device and a destination wireless terminal device, which is sent from the transmission origin wireless terminal device, and a processor configured to multiply the first number of the paths between an own wireless terminal device and the transmission origin wireless terminal device with another first number of paths between the own wireless terminal device and the destination wireless terminal device and calculate a number of alternative paths of the own wireless terminal device by subtracting the multiplied value from the second number of the paths which is received.

Abstract: A gateway apparatus that connects a multi-hop network of tree structure formed of node apparatuses to other network, comprising a grouping unit that groups, for each representative node apparatus having a direct link to the gateway apparatus in the tree structure, the nodes belonging to a subtree having same representative node as a root, into a node group, an interference group specifying unit that specifies a node group in which packet communication in the node group is subjected to an interference of a degree exceeding a threshold as an interference group, and a slot allocation unit that allocates some one time slot among a plurality of time slots included in a frame to one interference group among a plurality of interference groups, and allocates another time slot among the plurality of time slots to another interference group among the plurality of interference groups.

Abstract: In a network including a plurality of nodes, a node transmits data to another node, receives data from another node, and stores a communication history between a plurality of other nodes and the node itself. When an acknowledge response to data transmitted to a first node among the plurality of other nodes is not received, the node generates a duplicate data of the transmitted data. When a duplication report indicating detection of duplicate data transmitted to a second node among the plurality of other nodes has been received from one of the plurality of other nodes, the node refers to the communication history, and identifies the first node as a cause of generation of the duplicate data. Thereafter, the node generates a check request that include a communication history between the first node and the node itself and that requests the first node to check the communication history.

Abstract: A first device in a network includes: a memory configured to memorize a third device adjacent to the first device and selectable when data is transmitted toward a second device; a receiver configured to receive, from a fourth device, a notification of a first data volume being a volume of data addressed to the second device and transmitted by the fourth device through the first device; a processor configured to judge whether a criterion is exceeded by a second data volume which includes the first data volume and is a volume of data addressed to the second device and transmitted by the first device; and a transmitter configured to notify the third device of the second data volume, and notify a fifth device that the first device is a bottleneck, when the processor judges that the second data volume exceeds the criterion.

Abstract: A gateway apparatus that connects a multi-hop network of tree structure formed of node apparatuses to other network, comprising a grouping unit that groups, for each representative node apparatus having a direct link to the gateway apparatus in the tree structure, the nodes belonging to a subtree having same representative node as a root, into a node group, an interference group specifying unit that specifies a node group in which packet communication in the node group is subjected to an interference of a degree exceeding a threshold as an interference group, and a slot allocation unit that allocates some one time slot among a plurality of time slots included in a frame to one interference group among a plurality of interference groups, and allocates another time slot among the plurality of time slots to another interference group among the plurality of interference groups.

Abstract: A query-and-response processing method for analyzing the intention of a query provided by a user reduces search result information to an amount manageable for the user, sorts out the result information, and presents it in an easily readable form to the user. A search request analyzer analyzes a search request provided from the user, a search criteria generator generates search criteria, then a search executor searches through a database. A query intention analyzer analyzes the intention of a query from the user, such as a query topic, and an output formatter, based on the result of the analysis, selects items to be presented to the user from the search results and determines the output format of the search results. A presentation module receives the results and presents the data to the user.

Abstract: A data extracting unit extracts from a text fact data stipulated by a combination of a target object, an attribute name, and an attribute value. A data aggregating unit groups data similar to the extracted fact data throughout the text, and aggregates the number of occurrences. An inconsistency detecting unit detects an inconsistent data group which cannot be consistent by scanning a data set aggregated by the data aggregating unit. A correctness/incorrectness determining unit determines which data is correct within the inconsistent data group. A final data integrating unit integrates and outputs correct data. Additionally, the degree of reliability is assigned to fact data when the fact data is extracted from a text, and also a correctness/incorrectness determination of each data within a data group can be made by using the degree of reliability assigned to the fact data.

Abstract: A query-and-response processing method for analyzing the intention of a query provided by a user reduces search result information to an amount manageable for the user, sorts out the result information, and presents it in an easily readable form to the user. A search request analyzer analyzes a search request provided from the user, a search criteria generator generates search criteria, then a search executor searches through a database. A query intention analyzer analyzes the intention of a query from the user, such as a query topic, and an output formatter, based on the result of the analysis, selects items to be presented to the user from the search results and determines the output format of the search results. A presentation module receives the results and presents the data to the user.

Abstract: An apparatus which translates a document (character string) having various kinds of typographical information, such as on a font size and on a font style, as character attributes, and reflects the typographical information attached to an original text of the document. The apparatus performs a morpheme analysis with typographical information saved, by regarding a piece of typographical information as a morpheme for a document having typographical information between characters. The apparatus judges typographical information attached to each character forming a morpheme after performing a morpheme analysis for a sentence having a piece of typographical information as a character attribute, and determines morpheme typographical information when characters forming a single morpheme carry different pieces of typographical information.

Abstract: A machine-translation/electronic-mail system comprises an electronic-mail receiving unit, an electronic-mail transmitting unit, a standard dictionary used in a machine translation process, and a private-use-word registering apparatus. The private-use-word registering apparatus comprises a word-definition recognition unit for recognizing a word-definition command for defining a private-use word used by a specified user, the word-definition command existing in an electronic mail containing a document, and a temporarily registering means for temporarily storing in a private-use word dictionary the private-use word having been extracted by the word-definition recognition unit, the private-use word dictionary being temporarily used in the translation as the private-use word dictionary.