Abstract: A robustness measurement device of an embodiment includes an acquirer, a noise adder, an inference result group generator, and a robustness measurer. The acquirer acquires an input image. The noise adder adds noise to the input image to generate at least one noise-added image by adding noise to the input image. The inference result group generator generates an inference result group by grouping mutually associated inference results among inference results for at least one of the input image or the noise-added image. The robustness measurer measures robustness of a test target model on the basis of the inference result group.

Abstract: A document classification apparatus includes a processing circuit. The processing circuit configured to: divide a sentence included in a target document into word units; divide a sentence included in a supplementary sentence into word units; calculate an appearance statistic of a word obtained from the target document and the supplementary sentence; provide, to the word, an attribute representing specialty, specificity, or category independence based on the appearance statistic; extract an anchor word from words included in the supplementary sentence based on the attribute; perform target learning in accordance with an attribute of the anchor word and generate a word embedding vector; and estimate a classification category of a document based on the word embedding vector.

Abstract: According to one embodiment, a signal processing apparatus comprising processing circuitry. The processing circuitry is configured to acquire an environmental sound in an environment where an operating sound of an observation target can be collected. The processing circuitry is configured to calculate colorability and variation in frequency spectrum intensity concerning the environmental sound. The processing circuitry is configured to determine whether or not the environmental sound includes the operating sound by comparing the colorability and a degree of the variation with thresholds.

Abstract: A training apparatus includes a circuitry. The circuitry inputs a bag that is a set of an instance to an identifier and outputs a probability sequence including a probability that each instance belonging to the bag corresponds to a target. The circuitry calculates a bag likelihood that is a probability that specific instances corresponding to the target are included in the bag. The circuitry outputs an expected instance quantity regarding a quantity of the specific instances included in the bag. The circuitry calculates a parameter update amount based on teaching data, the bag likelihood, and the expected instance quantity, and updates a parameter of the identifier based on the parameter update amount.

Abstract: According to one embodiment, an electronic device includes a housing, a first member, an electronic element, a getter member, and a second member. The housing includes a first portion. A first gap is provided between the first portion and the first member. A space surrounded by the housing and the first member is sealed at 1 atmospheric pressure or less. The electronic element is provided in the space. The getter member is provided in the space and fixed to the first member. The second member is fixed to the first member. At least a part of the first member is provided between the getter member and the second member. A melting point of the second member is lower than a melting point of the first member.

Abstract: According to an embodiment, a highly thermally conductive silicon nitride sintered body includes silicon nitride crystal grains and a grain boundary phase. A thermal conductivity of the silicon nitride sintered body is not less than 80 W/(m·K). An average value of solid solution oxygen amounts of the silicon nitride crystal grains existing in a 20 ?m×20 ?m unit area in any cross section is not more than 0.2 wt %. An average value of major diameters of the silicon nitride crystal grains existing in a 50 ?m×50 ?m unit area in any cross section is not less than 1 ?m and not more than 10 ?m. An average of aspect ratios of the silicon nitride crystal grains existing in the 50 ?m×50 ?m unit area is not less than 2 and not more than 10.

Abstract: According to one embodiment, a mobile unit management device includes a processor with hardware, configured to generate an operation schedule of at least one mobile unit, control an operation of the mobile unit based on the operation schedule, upon a need arising for updating of the operation schedule, estimate a future position of the mobile unit based on an old operation schedule that has not yet been executed on the mobile unit, generate a new operation schedule based on the future position, integrate the old operation schedule and the new operation schedule into an integrated operation schedule, and control the operation of the mobile unit based on the integrated operation schedule.

Abstract: According to one embodiment, a learning apparatus includes processing circuitry. The processing circuitry generates a first converted feature values and a second converted feature values by stochastically converting at least one of first feature values and second feature values. The processing circuitry calculates a first loss related to similarity between the first converted feature values and the second converted feature values. The processing circuitry obtains a first processing result by processing based on one or more third parameters with respect to the first converted feature values. The processing circuitry updates a parameter of at least one of the first parameters and the third parameters such that a value based on the first loss and a second loss calculated from the first processing result and a label is minimized.

Abstract: According to one embodiment, a semiconductor device include a substrate, a first conductor on an upper surface of the substrate and a second conductor on the upper surface of the substrate. The first conductor is separated from the second conductor. A first transistor is on an upper surface of the first conductor. A first end of the first transistor is electrically connected to the first conductor. A second transistor is on an upper surface of the second conductor. A first end of the second transistor is electrically connected to the second conductor. A third conductor has a first portion that is a flat plate shape. The first portion is at a height above upper surfaces of the first and second transistors. The third conductor electrically connects a second end of the first transistor to the first end of the second transistor.

Abstract: A quantum-cryptographic-communication system according to an embodiment includes a key-integrated-management device, quantum-cryptography devices, and key-management-inspection devices. An inspection-target-value-calculating unit calculates an inspection-target value based on quantum-cryptography-device information related to a quantum-cryptography device. An expected-value-calculating unit calculates an expected value based on at least one of wiring information of a QKD link connected to the inspection-target-quantum-cryptography device; weather information of the site installed with the inspection-target-quantum-cryptography device; and the quantum-cryptography-device information. A permissible-value-calculating unit calculates a permissible value based on at least one of the wiring information, the weather information, and the quantum-cryptography-device information.

Abstract: A waveform segmentation device has a state level estimation unit that estimates a state level of input waveform data, and a segmentation identification unit that segments the waveform data at a plurality of segmentation points based on the state level estimated by the state level estimation unit. The segmentation identification unit may identify the plurality of segmentation points such that a feature value of the waveform data is included between two adjacent segmentation points among the segmentation points.

Abstract: According to one embodiment, an object to be transported by an automatic guided transportation vehicle includes: a housing having an entry route through which the automatic guided transportation vehicle enters; a marker that can be recognized by a sensor provided in the automatic guided transportation vehicle; and a marker holder configured to hold the marker retractably at an initial position where the marker contacts with the automatic guided transportation vehicle in the entry route.

Abstract: According to one embodiment, a magnetic disk device includes magnetic disks, a plurality of magnetic heads, and a control unit. A plurality of magnetic heads each includes a heat-assist unit which applies a preheating current of such magnitude that data already written to the magnetic disk is not erased to a near-field optical element for the preheat time. The control unit measures the time elapsing from a start of write to the time when a value of an index indicating the quality of a recording signal of data written by the magnetic head converges to within a first threshold range, and adjusts the preheat time for each of the magnetic heads in such a manner that the measured lapse time becomes less than or equal to a second threshold.

Abstract: A state evaluation system includes a sensor, a filter, a signal processor, and an evaluator. The sensor detects elastic waves which are generated from industrial equipment in operation. The filter can pass elastic waves having frequency characteristics based on abrasion which is generated in the industrial equipment. The signal processor extracts a plurality of feature values using the elastic waves passing through the filter. The evaluator evaluates an abnormality of the industrial equipment on the basis of a combination of the extracted plurality of feature values.

Abstract: A semiconductor device has a first and a second nitride semiconductor layer and a first and a second electrode thereon. A gate electrode is between the first and second electrodes. A gate field plate is on the gate electrode. A first field plate is above a position between the gate field plate and the second electrode. A second field plate is between the first field plate and the gate field plate. A distance from the first nitride semiconductor layer to the second field plate is shorter than a distance from the first nitride semiconductor layer to the portion of the gate field plate that protrudes the most towards the second electrode. The distance from the first nitride semiconductor layer to the second field plate is shorter than a distance from the first nitride semiconductor layer to an end surface of the first field plate on a first electrode side.

Abstract: A technique for outputting heterologous ions having the same per-nucleon energy at different timings by using one ion source is provided. An ion generation device includes: an ion generation energy setter that causes first ions and second ions generated by ionization in a vacuum chamber to be emitted in a mixed state from an opening; an electric-field voltage adjuster that imparts a same predetermined per-nucleon energy to each of the first and second ions by applying electric potential formed between the opening and extraction electrodes while switching the electric potential between first and second electric-field voltages; and an excitation current adjuster that causes the first and second ions to be outputted at different timings by supplying a coil of a separation electromagnet with an excitation current while switching the excitation current between first and second excitation currents.

Abstract: A computer-implemented method for speech recognition, comprising receiving a frame of speech audio; encoding the frame of speech audio; calculating a halting probability based on the frame of speech audio; adding the halting probability to a first accumulator variable; in response to the first accumulator variable exceeding or reaching a first threshold, calculating a context vector based on the halting probability and the encoding of the frame of speech audio; performing a decoding step using the context vector to derive a token; and executing a function based on the derived token, wherein the executed function comprises at least one of text output or command performance.

Abstract: A fuel cell system according to the present embodiment includes a fuel cell stack, a cooling-water tank having a cooling-water supply port to which a cooling-water supply pipe coupled to a cooling-water inlet manifold is coupled at the other end, a first oxygen-containing-gas discharge pipe coupled at one end to an air outlet manifold being coupled to the cooling-water tank at the other end, the cooling-water tank being configured to supply cooling water from the cooling-water inlet manifold, and a pressure-loss part to which a second oxygen-containing-gas discharge pipe coupled at one end to an air discharge port of the cooling-water tank is coupled at the other end, and to which a fuel-gas discharge pipe coupled at one end to a fuel-outlet manifold provided in a downstream outlet of the fuel-electrode passage is coupled at the other end.

Abstract: According to one embodiment, a transport device includes a main part, a wheel, and a reader. The main part supports or pulls an object. The wheel is mounted to the main part, and rolls over a traveling surface. The reader is fixed with respect to the main part, and reads an identifier in a direction tilted with respect to a first direction and a second direction. The first direction is along the traveling surface, and the second direction is perpendicular to the traveling surface. The identifier is mounted to a surface, which crosses the first direction, of the object. A position of an area of the surface read by the reader changes along the second direction as the transport device moves in the first direction.

Abstract: According to one embodiment, a solar cell includes a first electrode, a second electrode, and a power generation layer provided between the first electrode and the second electrode. The first electrode includes a first region and a second region. A direction from the first region to the second region is along a first direction from the first electrode to the second electrode. A first absorption coefficient of the first region for a first light having a wavelength of 330 nm is lower than a second absorption coefficient of the second region for the first light.