Abstract: A storage medium storing an information processing program that causes a computer to execute a process that includes based on a constraint condition for at least a part of a plurality of state variables, acquiring a number of second state variables whose set values satisfy the constraint condition determined by binary values when a first binary value is set in a first state variable; determining a number of searches for prohibiting the first state variable from being updated from the first binary value, based on the number of second state variables that corresponds to the first state variable and the first binary value; and searching for solutions to a problem by repeating updating values of one state variable among the plurality of state variables based on an amount of change in values of the energy function for the number of searches for prohibiting.

Abstract: An information processing system includes: a search circuit configured to in regard to a problem represented by an energy function that contains a plurality of state variables, obtain a neighborhood depth that indicates a number of the state variables to be changed per one state transition in a search for a solution to the problem, and execute the search for the solution to the problem by using the obtained neighborhood depth; and a processing circuit configured to calculate a first index that indicates a degree of improvement in a solution accuracy by a first neighborhood depth, calculate a second index that indicates a degree of the improvement in the solution accuracy by a second neighborhood depth, and output the neighborhood depth to be set in the search circuit based on the first index and the second index.

Abstract: A communication device that is used in a multi-point communication includes: a receiver, a processor and a transmitter. The receiver receives, from a target communication device included among one or more destination communication devices of the communication device, information that indicates a reception bandwidth allocated to a data transmission conducted from the communication device to the target communication device. The processor calculates a transmission bandwidth to be allocated to the data transmission conducted from the communication device to the target communication device according to information relating to the one or more destination communication devices. The transmitter transmits data to the target communication device at a rate that does not exceed an upper limit transmission rate. The upper limit transmission rate is determined according to a smaller one of values of the reception bandwidth and the transmission bandwidth.

Abstract: A communication device that is used in a multi-point communication includes: a receiver, a processor and a transmitter. The receiver receives, from a target communication device included among one or more destination communication devices of the communication device, information that indicates a reception bandwidth allocated to a data transmission conducted from the communication device to the target communication device. The processor calculates a transmission bandwidth to be allocated to the data transmission conducted from the communication device to the target communication device according to information relating to the one or more destination communication devices. The transmitter transmits data to the target communication device at a rate that does not exceed an upper limit transmission rate. The upper limit transmission rate is determined according to a smaller one of values of the reception bandwidth and the transmission bandwidth.

Abstract: A communication apparatus includes a memory, and a processor coupled to the memory and the processor configured to receive communication data, measure a usable communication band width for communication with a destination apparatus, determine a parameter relating to a reduction ratio for a data amount of the communication data, based on the measured communication band width, reduce the data amount of the communication data, based on the determined parameter, and transmit the communication data of the reduced data amount to the destination apparatus.

Abstract: A communication relay device receives a packet transmitted from a first communication device to a second communication device and forwards the packet to a correspondent communication relay device. The communication relay device includes: a processor and a communication processor. The processor extracts, from a request packet that requests a connection to the second communication device, a first identifier for indicating the first communication device, when the communication relay device receives the request packet from the first communication device, and generates configuration information including the first identifier.

Abstract: A communication device includes a memory and a processor. The processor is configured to extract first division data from transmission data when transmitting the transmission data. The processor is configured to store, as held data, the first division data in the memory in association with first identification information that identifies the transmission data. The processor is configured to transmit, to a communication destination, a first transmission packet including the transmission data and information that identifies the held data to cause the communication destination to store second division data which is not included in the held data, among the transmission data in association with the first identification information.

Abstract: A device includes a transmission/reception unit configured to receive a packet transmitted from a communication device to a destination device, a control unit configured to separate data received through the packet into transmission data and control information, a replacement process unit configured to generate replacement data resulting from replacing data associated with an identifier with the identifier in the transmission data when data that has been transmitted toward the destination device in association with the identifier is included, and a transmission unit configured to transfer the replacement data toward the destination device, wherein the control unit generates connected data resulting from connecting respective pieces of data obtained by removing the control information from the data, and discards the control information, and the replacement process unit generates the replacement data by replacing data associated with the identifier with the identifier in the connected data.

Abstract: A relay device includes a first relay device connected to a server and a second relay device connected to a client. The first relay device includes a request unit that requests the server to prefetch data in response to a request from the client; a control unit that caches the data in a first cache; and a notification unit that requests the server to prefetch data in response to a current request from the client, and notifies the second relay device of a predetermined signal when the data matches the data cached in the first cache. The second cache of the second relay device caches a part of the data cached in the first cache. The response unit performs, detecting the predetermined signal, a proxy response to the client with the data cached in the second cache in response to a data request from the client.

Abstract: A transfer device includes a memory and a processor configured to, when a plurality of packets are received from a client apparatus, register each of identifiers uniquely identifying each of the plurality of packets into sequence information in a reception order of the plurality of packets, when a first packet is received from the client apparatus, transmit the first packet to a destination apparatus and specify first identifier of a second packet next to the first packet in accordance with an order of the identifiers registered in the sequence information, and transmit the second packet corresponding to the specified first identifier to the destination apparatus.

Abstract: A communication apparatus includes a memory, and a processor coupled to the memory and the processor configured to receive communication data, measure a usable communication band width for communication with a destination apparatus, determine a parameter relating to a reduction ratio for a data amount of the communication data, based on the measured communication band width, reduce the data amount of the communication data, based on the determined parameter, and transmit the communication data of the reduced data amount to the destination apparatus.

Abstract: A communication device includes a memory and a processor. The processor is configured to extract first division data from transmission data when transmitting the transmission data. The processor is configured to store, as held data, the first division data in the memory in association with first identification information that identifies the transmission data. The processor is configured to transmit, to a communication destination, a first transmission packet including the transmission data and information that identifies the held data to cause the communication destination to store second division data which is not included in the held data, among the transmission data in association with the first identification information.

Abstract: A communication relay device receives a packet transmitted from a first communication device to a second communication device and forwards the packet to a correspondent communication relay device. The communication relay device includes: a processor and a communication processor. The processor extracts, from a request packet that requests a connection to the second communication device, a first identifier for indicating the first communication device, when the communication relay device receives the request packet from the first communication device, and generates configuration information including the first identifier.

Abstract: A communication device that is used in a multi-point communication includes: a receiver, a processor and a transmitter. The receiver receives, from a target communication device included among one or more destination communication devices of the communication device, information that indicates a reception bandwidth allocated to a data transmission conducted from the communication device to the target communication device. The processor calculates a transmission bandwidth to be allocated to the data transmission conducted from the communication device to the target communication device according to information relating to the one or more destination communication devices. The transmitter transmits data to the target communication device at a rate that does not exceed an upper limit transmission rate. The upper limit transmission rate is determined according to a smaller one of values of the reception bandwidth and the transmission bandwidth.

Abstract: A reception-side apparatus determines whether or not data duplicating a part of received data from a transmission-side apparatus is stored in the first storage that stores first data which has been received, and notifies, when data duplicating a part of the received data is stored in the first storage, the transmission-side apparatus of prediction information on duplicate reception of the first data. A transmission-side apparatus compares, when the prediction information is received, second data to be transmitted and a part of the first data in a second storage that stores the first data which has been transmitted based on the prediction information, determines whether or not there is a first part of the first data matching the second data in the second storage, and transmits, when there is the first part of the first data in the second storage, outline information on the second data.

Abstract: A relay device includes a first relay device connected to a server and a second relay device connected to a client. The first relay device includes a request unit that requests the server to prefetch data in response to a request from the client; a control unit that caches the data in a first cache; and a notification unit that requests the server to prefetch data in response to a current request from the client, and notifies the second relay device of a predetermined signal when the data matches the data cached in the first cache. The second cache of the second relay device caches a part of the data cached in the first cache. The response unit performs, detecting the predetermined signal, a proxy response to the client with the data cached in the second cache in response to a data request from the client.

Abstract: A transfer device includes a memory and a processor configured to, when a plurality of packets are received from a client apparatus, register each of identifiers uniquely identifying each of the plurality of packets into sequence information in a reception order of the plurality of packets, when a first packet is received from the client apparatus, transmit the first packet to a destination apparatus and specify first identifier of a second packet next to the first packet in accordance with an order of the identifiers registered in the sequence information, and transmit the second packet corresponding to the specified first identifier to the destination apparatus.

Abstract: A device includes a transmission/reception unit configured to receive a packet transmitted from a communication device to a destination device, a control unit configured to separate data received through the packet into transmission data and control information, a replacement process unit configured to generate replacement data resulting from replacing data associated with an identifier with the identifier in the transmission data when data that has been transmitted toward the destination device in association with the identifier is included, and a transmission unit configured to transfer the replacement data toward the destination device, wherein the control unit generates connected data resulting from connecting respective pieces of data obtained by removing the control information from the data, and discards the control information, and the replacement process unit generates the replacement data by replacing data associated with the identifier with the identifier in the connected data.

Abstract: An information processing apparatus including: a first storage storing identification information for a previously-transmitted object and for data blocks of the object; a second storage storing the data blocks; and a processor performing first processing for performing comparison between a first object to be transmitted and a second object in the second storage, and second processing for extracting a data block from the first object and searching the first storage for the identification information for the extracted data block. The processor, in the first processing, detects an unmatched part between the first object and the second object and transmits position information on a matched part in the second object, and performs second processing for data at a start position of the unmatched part onwards in the first object, and in the second processing, transmits a data block for which no identification information is included in the first storage.

Abstract: A communication apparatus includes a storing unit, a setting unit, a transmitting unit. The storing unit stores the number of transmissions of data to a destination of the data in association with an identifier that identifies the data. The setting unit sets, when the number of transmissions of target data that is data of a target of transmission to the destination reaches a threshold, as alternative data, a combination of the target data and a retaining request for requesting retaining of the target data. The alternative data is data to be transmitted to the destination as an alternative of the target data. The setting unit sets, after transmission of the retaining request, the identifier of the target data as the alternative data. The transmitting unit transmits the alternative data to the destination.