Abstract: A computational method is disclosed for the simulation of a hierarchical artificial neural network (ANN), wherein a single correlator pools, during a single time-step, two or more consecutive feed-forward inputs from previously predicted and now active neurons of one or more lower levels.

Abstract: Homeostasis-maintaining binary neural networks such as hierarchical temporal memories are provided. In various embodiments, a region of an artificial neural network is initialized. The region comprises a plurality of neurons and has a permanence value associated with each potential synaptic connection between neurons. The initialization comprises connecting a subset of the potential synaptic connections by synapses. A plurality of time-ordered inputs to the region is received. Some of the plurality of neurons are thereby caused to fire upon receipt of each time-ordered input. Upon receipt of each time-ordered input, for each potential synaptic connection between neurons, the permanence value is adjusted according to a firing sequence of the plurality of neurons. Those potential synaptic connections having a permanence value above a predetermined permanence threshold are connected when the total number of connected synapses in the region does not exceed a predetermined connectivity threshold.

Abstract: A system, according to one embodiment, includes: a plurality of tape reels; and a tape drive configured for reading data from tape stored on at least one of the plurality of tape reels. At least some of the tape reels have a tape wound thereon and a spring-like clip coupled to a free end of the tape. Moreover, the clip is selectively positionable in a wrapped position where the clip wraps around a portion of the tape when the tape is wound onto the reel, thereby holding the portion of the tape in place on the reel.

Abstract: A computer program product for writing a servo track includes a computer readable storage medium having program instructions embodied therewith. The program instructions are executable by a computer. The program instructions cause the computer to monitor a lateral position of a magnetic tape passing over a servo writing head during a servo track writing operation and write servo marks to the magnetic tape. A timing of the writing of each mark is based on the monitored position of the magnetic tape. A computer program product for writing a servo track includes a computer readable storage medium having program instructions embodied therewith. The program instructions are executable by a computer. The program instructions cause the computer to optically monitor a lateral position of a magnetic tape passing over a servo writing head during a servo track writing operation.

Abstract: Described are embodiments to calibrate read sensors, which in turn may ensure that the equipment utilized to detect antigens is reliable and accurate. If it is determined that a read sensor is degraded a method of calibrating a read sensor of a read head may be used.

Abstract: Various embodiments relate to methods for loading and unloading a tape storage medium. According to one embodiment, a method for loading a tape storage medium includes positioning a mechanized take-up reel with respect to a tape supply reel, positioning a feature coupled to a tape storage medium on the tape supply reel with respect to the mechanized take-up reel, rotatably decoupling an inner hub of the mechanized take-up reel from an outer hub of the mechanized take-up reel, extending a tongue of the mechanized take-up reel, engaging the tongue with the feature, retracting the tongue and feature into the outer hub, and nonrotably coupling the inner hub with the outer hub.

Abstract: Homeostasis-maintaining binary neural networks such as hierarchical temporal memories are provided. In various embodiments, a region of an artificial neural network is initialized. The region comprises a plurality of neurons and has a permanence value associated with each potential synaptic connection between neurons. The initialization comprises connecting a subset of the potential synaptic connections by synapses. A plurality of time-ordered inputs to the region is received. Some of the plurality of neurons are thereby caused to fire upon receipt of each time-ordered input. Upon receipt of each time-ordered input, for each potential synaptic connection between neurons, the permanence value is adjusted according to a firing sequence of the plurality of neurons. Those potential synaptic connections having a permanence value above a predetermined permanence threshold are connected when the total number of connected synapses in the region does not exceed a predetermined connectivity threshold.

Abstract: A computer program product for writing a servo track includes a computer readable storage medium having program instructions embodied therewith. The program instructions are executable by a computer. The program instructions cause the computer to monitor a lateral position of a magnetic tape passing over a servo writing head during a servo track writing operation and write servo marks to the magnetic tape. A timing of the writing of each mark is based on the monitored position of the magnetic tape. A computer program product for writing a servo track includes a computer readable storage medium having program instructions embodied therewith. The program instructions are executable by a computer. The program instructions cause the computer to optically monitor a lateral position of a magnetic tape passing over a servo writing head during a servo track writing operation.

Abstract: Magnetic tape media according to one embodiment includes a plurality of servo tracks having physical characteristics of being written by an apparatus that monitors a lateral position of the magnetic tape media passing over a servo writing head during a servo track writing operation and writes servo marks to the magnetic tape media. A timing of the writing of each servo mark is based on the monitored position of the magnetic tape media. Magnetic tape media according to another embodiment include a plurality of servo tracks having a plurality of consecutively-written servo marks, a distance between each consecutively-written servo mark in a tape travel direction varying in direct correlation with a distance of the respective mark, as written, from an edge of the magnetic tape media in a cross-track direction.

Abstract: A computational method is disclosed for the simulation of a hierarchical artificial neural network (ANN), wherein a single correlator pools, during a single time-step, two or more consecutive feed-forward inputs from previously predicted and now active neurons of one or more lower levels.

Abstract: A system, according to one embodiment, includes: a plurality of tape reels; and a tape drive configured for reading data from tape stored on at least one of the plurality of tape reels. At least some of the tape reels have a tape wound thereon and a spring-like clip coupled to a free end of the tape. Moreover, the clip is selectively positionable in a wrapped position where the clip wraps around a portion of the tape when the tape is wound onto the reel, thereby holding the portion of the tape in place on the reel.

Abstract: A spring-like clip for a spool of tape, one end of the clip being attached to one end of the tape, and another end of the clip having an engagement feature that allows the clip to be pulled from the spool. The clip is configured to curve around the spool to hold the tape in place. In one general embodiment, a product includes a reel, a tape coupled to the reel, and a spring-like clip coupled to a free end of the tape. The clip is selectively positionable in a wrapped position where the clip wraps around a portion of the tape when the tape is wound onto the reel, thereby holding the portion of the tape in place on the reel. Systems for using various types of such products are presented, and generally include a tape drive configured for reading data from tape stored on such products.

Abstract: Magnetic tape media according to one embodiment includes a plurality of servo tracks having physical characteristics of being written by an apparatus that monitors a lateral position of the magnetic tape media passing over a servo writing head during a servo track writing operation and writes servo marks to the magnetic tape media. A timing of the writing of each servo mark is based on the monitored position of the magnetic tape media. Magnetic tape media according to another embodiment include a plurality of servo tracks having a plurality of consecutively-written servo marks, a distance between each consecutively-written servo mark in a tape travel direction varying in direct correlation with a distance of the respective mark, as written, from an edge of the magnetic tape media in a cross-track direction.

Abstract: Magnetic tape media according to one embodiment includes a plurality of servo tracks having physical characteristics of being written by an apparatus that monitors a lateral position of the magnetic tape media passing over a servo writing head during a servo track writing operation and writes servo marks to the magnetic tape media. A timing of the writing of each servo mark is based on the monitored position of the magnetic tape media.

Abstract: Various embodiments relate to methods for loading and unloading a tape storage medium. According to one embodiment, a method for loading a tape storage medium includes positioning a mechanized take-up reel with respect to a tape supply reel, positioning a feature coupled to a tape storage medium on the tape supply reel with respect to the mechanized take-up reel, rotatably decoupling an inner hub of the mechanized take-up reel from an outer hub of the mechanized take-up reel, extending a tongue of the mechanized take-up reel, engaging the tongue with the feature, retracting the tongue and feature into the outer hub, and nonrotably coupling the inner hub with the outer hub.

Abstract: Various embodiments relate to apparatuses and methods for loading and unloading a tape storage medium. In one embodiment, an apparatus for such purpose includes a mechanized take-up reel. The mechanized take-up reel includes an inner hub, an outer hub being selectively nonrotatably coupleable with the inner hub (where at least one of the hubs is coupled to a rotating mechanism), a tongue coupled to the inner hub, and a slot in the outer hub for permitting the tongue to extend beyond a periphery of a tape engaging surface of the outer hub upon relative rotation between the inner and outer hubs.

Abstract: According to one embodiment, a calibration assembly includes an outer layer having at least one calibration trench extending along a y-axis, and an encapsulation layer within the calibration trench. The encapsulation layer has a plurality of nanoparticles spaced apart along said y-axis of said at least one calibration trench. Each of said plurality of nanoparticles are provided at known y-axis locations in said calibration trench, and each of the plurality of nanoparticles have a known magnetic property.

Abstract: Magnetic tape media according to one embodiment includes a plurality of servo tracks having physical characteristics of being written by an apparatus that monitors a lateral position of the magnetic tape media passing over a servo writing head during a servo track writing operation and writes servo marks to the magnetic tape media. A timing of the writing of each servo mark is based on the monitored position of the magnetic tape media.

Abstract: Magnetic tape media according to one embodiment includes a servo track having a plurality of servo marks therealong. A distance of the servo marks, as originally written, from an edge of the tape media varies along the length of the magnetic tape media. Magnetic tape media according to another embodiment includes a plurality of servo tracks having physical characteristics of being written by an apparatus that monitors a lateral position of the magnetic tape media passing over a servo writing head during a servo track writing operation and writes servo marks to the magnetic tape media. A timing of the writing of each servo mark is based on the monitored position of the magnetic tape media.

Abstract: According to one embodiment a method of performing a calibration correlation test for a calibration assembly includes sweeping a head module having a magnetic read sensor along a y-axis of the calibration assembly. The calibration assembly has at least one calibration trench having at least one nanoparticle at a known y-axis location in the calibration trench and the magnetic properties are known for the at least one nanoparticle. A read response of the at least one nanoparticles is obtained from the magnetic read sensor and a correlation is determined from the read response. The correlation of the read response is compared to a correlation threshold. The read response correlation is stored in memory in response to determining that the correlation of the read response is greater than the correlation threshold. When the correlation of the read response is not greater than the correlation threshold, a correlation test error is indicated.