Abstract: Weighted population code in neuromorphic systems is provided. According to an embodiment, a plurality of input values is received. For each of the plurality of values, a plurality of spikes is generated. Each of the plurality of spikes has an associated weight. A consumption time is determined for each of the plurality of spikes. Each of the plurality of spikes is sent for consumption at its consumption time.

Abstract: One embodiment of the invention provides a method comprising defining a brainlet representing a platform-agnostic network of neurons, synapses, and axons. The method further comprises compiling the brainlet into a corelet for mapping onto neurosynaptic substrate, and mapping the corelet onto the neurosynaptic substrate. The corelet is compatible with one or more conditions related to the neurosynaptic substrate.

Abstract: A computer-implemented method is provided for optimizing core utilization in a neurosynaptic network. The computer-implemented method comprises identifying one or more unused portions of a neurosynaptic network. Additionally, the computer-implemented method comprises, for each of the one or more unused portions of the neurosynaptic network, disconnecting the unused portion from the neurosynaptic network.

Abstract: Embodiments of the invention relate to a method, system, and computer program product to construct a gene interaction network by combining two sources of genomic information, namely RNAi imaging data and gene expression data. Tools are provided to gather data, including gene expression data and gene image data, and to compute measurements and relationships, respectively. A graph is constructed with nodes representing genes and edges drawn between the nodes to form gene clusters. The graph is refined such that the shape captures a structural pattern of the cluster.

Abstract: Embodiments of the invention relate to a method for constructing a gene interaction network by combining two sources of genomic information, namely RNAi imaging data and gene expression data. Tools are provided to gather data, including gene expression data and gene image data, and to compute measurements and relationships, respectively. A graph is constructed with nodes representing genes and edges drawn between the nodes to form gene clusters. The graph is refined such that the shape captures a structural pattern of the cluster.

Abstract: Embodiments of the invention relate to a constructing a gene interaction network. Tools are provided to compute a gene relationship measure based upon cellular images, and to rank image collections having a similar morphology. The ranking is based upon capturing similarity within the ranked collection by modeling a three dimensional shape of a cellular image stack. The graph is constructed for related images stacks. Nodes in the graph represent genes, and edges drawn between the nodes represent corresponding image stacks in a commonly ranked list. Accordingly, the graphical representation mathematically and visually connects respective genes.

Abstract: Embodiments of the invention relate to a constructing a gene interaction network. Tools are provided to compute a gene relationship measure based upon cellular images, and to rank image collections having a similar morphology. The ranking is based upon capturing similarity within the ranked collection by modeling a three dimensional shape of a cellular image stack. The graph is constructed for related images stacks. Nodes in the graph represent genes, and edges drawn between the nodes represent corresponding image stacks in a commonly ranked list. Accordingly, the graphical representation mathematically and visually connects respective genes.

Abstract: In one embodiment, a data storage system includes a tape drive configured to: write a plurality of files to a first partition of a magnetic recording tape; and write an index to a second partition of the magnetic recording tape, the index including information about locations of data of the plurality of files in the first partition of the magnetic recording tape. In another embodiment, a magnetic recording tape includes: a plurality of files to written to a first partition of the magnetic recording tape using a tape drive; and an index written to a second partition of the magnetic recording tape using the tape drive, the index including information about locations of data of the plurality of files in the first partition of the magnetic recording tape.

Abstract: In one embodiment, a computer program product for writing data to a magnetic recording tape includes a computer readable storage medium having computer readable program code embodied therewith. The computer readable program code includes: computer readable program code configured to cause a tape drive to: write a plurality of files to a first partition of a magnetic recording tape; and write an index to a second partition of the magnetic recording tape. The index includes information about locations of data of the plurality of files in the first partition of the magnetic recording tape. A longitudinal buffering band is present between the first and second partitions; and is configured to isolate writing in the first partition from overwriting neighboring tracks in the second partition. The longitudinal buffering band comprises an entirety of at least one full wrap of the magnetic recording tape.

Abstract: One embodiment of the invention provides a system for mapping a neural network onto a neurosynaptic substrate. The system comprises a reordering unit for reordering at least one dimension of an adjacency matrix representation of the neural network. The system further comprises a mapping unit for selecting a mapping method suitable for mapping at least one portion of the matrix representation onto the substrate, and mapping the at least one portion of the matrix representation onto the substrate utilizing the mapping method selected. The system further comprises a refinement unit for receiving user input regarding at least one criterion relating to accuracy or resource utilization of the substrate. The system further comprises an evaluating unit for evaluating each mapped portion against each criterion. Each mapped portion that fails to satisfy a criterion may be remapped to allow trades offs between accuracy and resource utilization of the substrate.

Abstract: Embodiments of the invention provide a method comprising maintaining a library of one or more compositional prototypes. Each compositional prototype is associated with a neurosynaptic program. The method further comprises searching the library based on one or more search parameters. At least one compositional prototype satisfying the search parameters is selected. A neurosynaptic network is generated or extended by applying one or more rules associated with the selected compositional prototypes.

Abstract: One embodiment of the invention provides a system for mapping a neural network onto a neurosynaptic substrate. The system comprises a metadata analysis unit for analyzing metadata information associated with one or more portions of an adjacency matrix representation of the neural network, and a mapping unit for mapping the one or more portions of the matrix representation onto the neurosynaptic substrate based on the metadata information.

Abstract: In one embodiment, a method for writing data to a magnetic recording tape includes writing a plurality of files to a first partition of a magnetic recording tape using a tape drive, and writing an index to a second partition of the magnetic recording tape using the tape drive, the index including information about locations of data of the plurality of files in the first partition of the magnetic recording tape.

Abstract: One embodiment of the invention provides a method comprising defining a brainlet representing a platform-agnostic network of neurons, synapses, and axons. The method further comprises compiling the brainlet into a corelet for mapping onto neurosynaptic substrate, and mapping the corelet onto the neurosynaptic substrate. The corelet is compatible with one or more conditions related to the neurosynaptic substrate.

Abstract: Embodiments of the invention provide a method for mapping a bipartite graph onto a neuromorphic architecture comprising of a plurality of interconnected neuromorphic core circuits. The graph includes a set of source nodes and a set of target nodes. The method comprises, for each source node, creating a corresponding splitter construct configured to duplicate input. Each splitter construct comprises a first portion of a core circuit. The method further comprises, for each target node, creating a corresponding merger construct configured to combine input. Each merger construct comprises a second portion of a core circuit. Source nodes and target nodes are connected based on a permutation of an interconnect network interconnecting the core circuits.

Abstract: A system according to one embodiment includes a tape cartridge, the tape cartridge comprising: a housing; a magnetic recording tape in the housing; and a non-tape nonvolatile memory coupled to the housing, the nonvolatile memory being for storing therein an index comprising file system information for a plurality of files stored on the magnetic recording tape. A method for storing data on a tape cartridge according to one embodiment includes writing a plurality of files to a magnetic recording tape of a tape cartridge; and writing an index to a non-tape nonvolatile memory of the tape cartridge, the index including information about locations of data of the plurality of files on the magnetic recording tape.

Abstract: In one embodiment, a method includes loading a tape cartridge into at least one tape drive installed in an automated tape library, where a tape of the tape cartridge has at least two partitions; writing plurality of data blocks on a first of the partitions; and writing an index on a second of the partitions, wherein the index includes information about at least one of files and the blocks on the first partition.

Abstract: A system and a corresponding method for temporal modification of audio signals, to increase or reduce the playback rates of an audio and/or a video file in a client-server environment. The system and method improve the efficiency of serving streaming media to a client so that the client can select an arbitrary time-speedup factor. The speedup system performs many of the pre-calculations once, at the server, so that the bandwidth needs are reduced and the client's computational load is minimized. The final time-scale-modification can be either done completely on the server, thus reducing the client's needs, or partly on the client's computer to minimize latency, and to reduce on-the-fly computational load from the server that serves multiple clients concurrently.

Abstract: A mechanism is provided for rendering tape file system information. The mechanism obtains a list of one or more files residing on a tape in the tape file system from a file directory. The mechanism obtains location information associated with at least one file of the one or more files. Finally, the mechanism renders a representation of the location information with the at least one file.

Abstract: Embodiments of the invention relate to a constructing a gene interaction network. Tools are provided to compute a gene relationship measure based upon cellular images, and to rank image collections having a similar morphology. The ranking is based upon capturing similarity within the ranked collection by modeling a three dimensional shape of a cellular image stack. The graph is constructed for related images stacks. Nodes in the graph represent genes, and edges drawn between the nodes represent corresponding image stacks in a commonly ranked list. Accordingly, the graphical representation mathematically and visually connects respective genes.