Abstract: To increase the reliability of power supply control of a server group and reduce the power consumption of the server group.

Abstract: A control system comprises a property estimating means for estimating a property of a task or data on a computer system to be controlled on the basis of property estimation source data, one or more control executing means for controlling to stop/operate system components of the computer system, changing a task arrangement, changing a data arrangement and changing a data structure according to issued control commands, a control strategy determining means for determining, as a control strategy to be executed, control processing contents of one or a combination of the four controls on the basis of an operation situation of the computer system in the future derived from the estimated property of the task or data, and a control command issuing means for issuing control commands to the control executing means according to the control processing contents determined by the control strategy determining means.

Abstract: A distributed storage system of the present invention includes a plurality of data nodes coupled via a network and respectively including data storage units. At least two of the data nodes hold in the respective data storage units thereof replicas of a plurality of types of data structures that are logically identical but are physically different between the data nodes.

Abstract: A distributed system includes: a plurality of ordinary nodes provided with reduced-power states having different times of recovery to a normal operating state; and a management node for assigning a job to an ordinary node for carrying out the job. The management node has: node select means for selecting an ordinary node from ordinary nodes each put in one of the reduced-power states, assigning a job to the selected ordinary node and driving the selected ordinary node to carry out the assigned job; and node control means for executing control to restore an ordinary node selected by the node select means to the normal operating state. The node select means selects an ordinary node from the ordinary nodes each put in one of the reduced-power states having different times of recovery to the normal operating state in accordance with an ordinary-node order starting with an ordinary node existing in a reduced-power state and having a short time of recovery to the normal operating state.

Abstract: An information re-organization system includes a plurality of counters coordinated to meaning attributes, and a re-organization incentive notification unit that updates, in case the information stored in preset storage unit has been updated, value of a counter out of the multiple counters that has the meaning attribute associated with contents updated. The information re-organization system also includes an information re-organization processor that executes, in case the value of the counter section updated has met one of a number of predetermined conditions for information re-organization, a processing for information re-organization corresponding to the condition for information re-organization on the information stored in the preset storage unit.

Abstract: An information retrieval system comprising: an information acquisition unit that acquires information as a subject of retrieval; a time information specifying unit that specifies time information owned by said information as the subject of retrieval; and an index updating unit that updates said index using the time information specified by said time information specifying unit; wherein said information retrieval system provides an information retrieving function of reproducing retrieved results at any time point by providing index for information retrieval with the time information and by using data of said index relevant to a reference point of retrieval identified at the time of retrieval.

Abstract: An information re-organization system includes a plurality of counters coordinated to meaning attributes, and a re-organization incentive notification unit that updates, in case the information stored in preset storage unit has been updated, value of a counter out of the multiple counters that has the meaning attribute associated with contents updated. The information re-organization system also includes an information re-organization processor that executes, in case the value of the counter section updated has met one of a number of predetermined conditions for information re-organization, a processing for information re-organization corresponding to the condition for information re-organization on the information stored in the preset storage unit.

Abstract: An information retrieval system comprising: an information acquisition unit that acquires information as a subject of retrieval; a time information specifying unit that specifies time information owned by said information as the subject of retrieval; and an index updating unit that updates said index using the time information specified by said time information specifying unit; wherein said information retrieval system provides an information retrieving function of reproducing retrieved results at any time point by providing index for information retrieval with the time information and by using data of said index relevant to a reference point of retrieval identified at the time of retrieval.

Abstract: Access destination determination means determines a read destination and/or a write destination of specified data from nodes corresponding to the data and stored in data store destination storage means. Access probability calculation means calculates an access probability based on a history of accesses to the data, and stores the calculated access probability in access probability storage means. When no node corresponding to the specified data is stored in the data store destination storage means, access probability estimation means estimates an access probability of the data based on access probabilities stored in the access probability storage means, and the access destination determination means determines a write destination of the data based on the estimated access probability.

Abstract: Disclosed is a system in which an index registration unit registers an index, which will be used for search processing, as a partitioned index which is partitioned on a time series basis, and a search means reads indexes older than a specified point in time, which is used as a search base point, to perform search processing, thereby searching for information based on a point in time in the past.

Abstract: A load characteristic estimation system includes: a program input unit into which a program that runs on a prescribed computer system is inputted; a program feature information acquisition unit that obtains features from the inputted program; and a load characteristic estimation unit that estimates a load characteristic of the inputted program by reading load characteristic information of another program having a feature similar to the inputted program, from a load characteristic recording unit that records a load characteristic produced in the prescribed computer system when the other program was run on the computer system in the past.

Abstract: Storage nodes participating in the distributed storage system are divided into groups beforehand. A data replica creation unit operates so that a replica is created on each of the nodes participating in the distributed storage system on a hash ring. A unit that specifies an operating state of the system determines the number of data replicas for each group. The data replica creation unit traverses the hash ring and creates one or more replicas until it is determined that the number of replicas for each group is reached.

Abstract: A coil substrate structure which enhances heat dissipation and fully secures a mounting area is provided. A coil substrate structure 100 comprises a first coil substrate 110 having a primary transformer coil part 41; a second coil substrate 120, disposed on the first coil substrate 110, having a secondary transformer coil part 42; and a transformer core 130 for magnetically connecting the transformer coil parts 41, 42 to each other. The coil substrates 110, 120 are disposed on each other while being shifted from each other such that the transformer coil parts 41, 42 overlap each other as seen in the substrate thickness direction. This can increase the heat dissipation area of the coil substrates 110, 120. The transformer coil parts 41, 42 have a width in a transmission direction A narrower than a width in a direction B intersecting the transmission direction A as seen in the substrate thickness direction. This can reduce the multilayer area of the coil substrates 110, 120 in the transmission direction A.

Abstract: A processing node selection system comprises: a first node that has a processing resource; and a second node that has a processing resource and stores data used in processing. A selection is made of a node with a smaller total volume of data to be exchanged between the first and second nodes, as a node to execute the processing when processing is executed using data stored in the second node and the processing result is outputted by the first node.

Abstract: A replication system rapidly switches from a normal-system site to a standby-system site in the event of a problem and reliably maintains functions, and moreover, reduces drops in performance. A first site provides system functions that accompany writing and reading of data. A relay transfer device receives update information from the first site, causes completion of processes for replication in the first site, and continuously executes processes for successively transferring the update information to a second site. The second site receives the update information of the first site and applies this update information to itself to retain a replica of the data of the first site. If, when executing a write request command or a read request command to provide at least a portion of the system functions, the second site has not yet retained the most recent data that are the target of the command, the second site acquires the necessary update information and then executes the command.

Abstract: The present invention provides information storage system and method capable of changing an information storage format to a format suitable for the data utilization form. There are provided a means that records history information of information processing on data, a plurality of information storing means that store information in mutually different information storage formats, and an information storage format control means that changes an information storage format of data, on the basis of a history of processing relating to the data.

Abstract: The index update unit analyses the information stored in a document repository to create an index for search and stores the index in a time-series divisional index storage unit and creates, from an ACL repository, an access control entry ACE in association with the index for search, which is correlation of information to be searched with access right of at least a group to which the user belongs. The ACL cache generation unit creates ACL cache data that correlates the user with access right to the information to be searched, from the ACE, and registers the ACL cache data created in an ACL cache. A search processing unit searches for an index for search in response to a request for search from said user. In case the ACL cache data correlating the user with the index for search is registered in the ACL cache, the search processing unit_takes, from among the information searched, the information, reference to which is allowed for the user as a search result, based on information in the ACL cache.

Abstract: An information re-organization system includes a plurality of counters coordinated to meaning attributes, and a re-organization incentive notification unit that updates, in case the information stored in preset storage unit has been updated, value of a counter out of the multiple counters that has the meaning attribute associated with contents updated. The information re-organization system also includes an information re-organization processor that executes, in case the value of the counter section updated has met one of a number of predetermined conditions for information re-organization, a processing for information re-organization corresponding to the condition for information re-organization on the information stored in the preset storage unit.

Abstract: An information managing system includes a parameter setting unit for setting a parameter representative of an attribute of a user and information to be retrieved, and an information relevance space generator for generating an information relevance space representative of information indicating a relevance between the user and the information to be retrieved, based on the parameter set by the parameter setting unit.

Abstract: A replication system rapidly switches from a normal-system site to a standby-system site in the event of a problem and reliably maintains functions, and moreover, reduces drops in performance. A first site provides system functions that accompany writing and reading of data. A relay transfer device receives update information from the first site, causes completion of processes for replication in the first site, and continuously executes processes for successively transferring the update information to a second site. The second site receives the update information of the first site and applies this update information to itself to retain a replica of the data of the first site. If, when executing a write request command or a read request command to provide at least a portion of the system functions, the second site has not yet retained the most recent data that are the target of the command, the second site acquires the necessary update information and then executes the command.