Abstract: A learning device is configured to perform learning by gradient boosting, and includes: data memory units configured to store learning data including a type of feature amount and corresponding gradient information; gradient output units each configured to receive an input of the feature amount and the corresponding gradient information from a corresponding one of the data memory units, and output the gradient information through an output port corresponding to each value of the input feature amount; an addition unit configured to add up one or more pieces of the gradient information corresponding to the same value of the feature amount, and output an added value of the gradient information corresponding to each value of the feature amount; and a histogram memory unit configured to store a histogram obtained by integrating added values of the gradient information corresponding to each value of the feature amount as a bin.

Abstract: A learning device is configured to perform learning of a decision tree. The learning device includes a gradient output unit and a branch score calculator. The gradient output unit is configured to output a cumulative sum of gradient information corresponding to each value of a feature amount of learning data. The branch score calculator is configured to calculate a branch score used for determining a branch condition for a node of the decision tree, from the cumulative sum without using a dividing circuit.

Abstract: A measuring device includes a total internal reflection prism having a total reflection plane that an object to be measured contacts, a light source to emit light to make the light having a wavelength equal to or greater than 7 micrometers (?m) and equal to or less than 12 ?m incident on the total reflection plane, and a sensor to detect light intensity of the light reflected by the total reflection plane. In the measuring device, an equation arc ? sin ? ( n ? 2 n ? 1 ) < ? ? c < arc ? sin ? ( n ? 2 n ? 1 ) + 5. [ DEG ] is satisfied, where n1 denotes a refractive index of a base material of the total internal reflection prism for the light having a wavelength of 10 ?m, n2 denotes a refractive index of the object to be measured for the light having the wavelength of 10 ?m and n2 takes a value 1.32 or 1.44, and ?c denotes an incident angle of a center of light flux emitted from the light source.

Abstract: A biological information measuring technique with improved reliability is proposed. A method of measuring biological information using an optical element with a totally reflecting surface, which is to be brought into contact with an object to be observed, is provided. The method includes, after the optical element has been in contact with the object to be observed, acquiring an absorbance at the totally reflecting surface in a state where the optical element is not in contact with the object to be observed, and determining by an information processing apparatus whether the object to be observed needs to be cleaned, based on the absorbance.

Abstract: A learning device includes a learning unit configured to learn a model using learning data stored in a data storage unit; a subsampling unit configured to determine whether to use the learning data corresponding to gradient information updated by an update unit based on the model, for learning of a next model after learning of one model based on a subsampling rate; first and second buffer unit configured to buffer learning data determined to be used for and data determined not to be used for learning of the next model and gradient information corresponding to the learning data, respectively, up to a volume determined in advance. The first buffer unit and the second buffer unit are configured to write the learning data and the gradient information into the data storage unit for each predetermined block when buffering the learning data and the gradient information up to the volume.

Abstract: A notification system that is capable of sending a message to a person who is highly related to the message. The notification system includes an image pickup unit that picks up an image including a person as an object, an obtainment unit that obtains a role of the person in the image based on the image picked up by the image pickup unit, a determination unit that determines a content of a message about a predetermined event corresponding to the role obtained by the obtainment unit, and a notification unit that notifies of the message determined by the determination unit.

Abstract: A measuring device includes a total internal reflection prism having a total reflection plane that an object to be measured contacts, a light source to emit light to make the light having a wavelength equal to or greater than 7 micrometers (?m) and equal to or less than 12 ?m incident on the total reflection plane, and a sensor to detect light intensity of the light reflected by the total reflection plane. In the measuring device, an equation arc ? sin ? ( n ? 2 n ? 1 ) < ? ? c < arc ? sin ? ( n ? 2 n ? 1 ) + 5. [ DEG ] is satisfied, where n1 denotes a refractive index of a base material of the total internal reflection prism for the light having a wavelength of 10 ?m, n2 denotes a refractive index of the object to be measured for the light having the wavelength of 10 ?m and n2 takes a value 1.32 or 1.44, and ?c denotes an incident angle of a center of light flux emitted from the light source.

Abstract: A measuring apparatus includes a light source configured to emit light in a mid-infrared region, the light including: first-wavelength light having a wave number of from 970 cm-1 or more to 1010 cm-1 or less; and second-wavelength light different from the first-wavelength light, the second-wavelength light having a wave number of from 950 cm-1 or more to 990 cm-1 or less; a photosensor configured to detect the light emitted from the light source and reflected by a measurement target; and an information processing device configured to: obtain a first absorbance of the first-wavelength light and a second absorbance of the second-wavelength light from an output of the photosensor; and determine a biomarker of the measurement target based on the first absorbance and the second absorbance.

Abstract: An information processing system that improves the usability of the overall information processing system. The processing system, which includes an image processing apparatus and is capable of communicating with an audio control apparatus, outputs response information, as a response to the command generated based on a user's audio received through the audio control apparatus, wherein. Specifically, the processing system (a) in accordance with that a predetermined command generated based on first audio information received from an audio control apparatus associated with a first attribute information is obtained, outputs a first type of response information as a response to the predetermined command, and (b) in accordance with a predetermined command generated based on second audio information received from an audio control apparatus associated with a second attribute information is obtained, outputs a second type of response information as the response to the predetermined command.

Abstract: A learning device is configured to perform learning of a decision tree. The learning device includes a branch score calculator, and a scaling unit. The branch score calculator is configured to calculate a branch score used for determining a branch condition for a node of the decision tree based on a cumulative sum of gradient information corresponding to each value of a feature amount of learning data. The scaling unit is configured to perform scaling on a value related to the cumulative sum used for calculating the branch score by the branch score calculator to fall within a numerical range with which the branch score is capable of being calculated.

Abstract: A display apparatus includes: an irradiation section to be irradiated with image light while being driven to cause a three-dimensional image be displayed based on reflected image light in a manner visible to a user using an afterimage effect; a driver that drives the irradiated section; circuitry that acquires two-dimensional image data generated according to at least one of an angle or a position of the irradiation section being driven; and an irradiation device that irradiates the irradiated section with the image light based on the two-dimensional image data that is acquired.

Abstract: According to one aspect of the present invention, a learning device is configured to perform learning of decision trees by gradient boosting. The learning device includes an initializer and a learning unit. The initializer is configured to perform initialization processing on an address memory that stores an address in a data memory of learning data used for learning of a node in a decision tree. The learning unit is configured to perform learning of the decision tree by using the learning data stored in the data memory. The initializer is configured to perform, after a certain decision tree is learned by the learning unit, the initialization processing for a next decision tree of the certain decision tree in parallel with processing for the certain decision tree.

Abstract: A learning device is configured to perform learning of a decision tree, and includes: a plurality of learning units each corresponding to a data memory of a plurality of data memories, and being configured to perform learning at a first node using learning data acquired by using first addresses related to a storage destination of the learning data corresponding to the first node of the decision tree in the data memory, and output a second address related to a storage destination of each piece of the learning data branched from the first node; and a plurality of managers each corresponding to a learning unit of the plurality of learning units, and being configured to calculate third addresses related to storage destinations of learning data corresponding to second nodes being next nodes of the first node using the first addresses and the second address output from the learning unit.

Abstract: A learning device is configured to perform learning of a decision tree by gradient boosting. The learning device includes a plurality of learning units and a plurality of model memories. The plurality of learning units are configured to perform learning of the decision tree using learning data divided to be stored in a plurality of data memories. The plurality of model memories are each configured to store data of the decision tree learned by corresponding one of the plurality of learning units.

Abstract: An information processing apparatus that is capable of reducing time and effort to set settings of a smart speaker that cooperates with the information processing apparatus when a user starts to use the smart speaker. The information processing apparatus acquires identification information of the user, and acquires audio control information associated with the acquired identification information. Then, the information processing apparatus requests the smart speaker to change the audio setting of the smart speaker based on the acquired audio control information.

Abstract: A learning device includes: a learning unit configured to read out feature amounts of learning data from a data memory and derive a branch condition for a node of a decision tree based on the feature amounts, to perform learning of the decision tree; and a discriminator configured to perform determining, in accordance with the branch condition, a node to which learning data is to be branched from the node corresponding to the branch condition. The learning unit is configured to, in parallel with processing of the discriminator reading out learning data at a specific node from the data memory via a first port of the data memory and performing the determining, read out, from the data memory via a second port, learning data at a node on which the discriminator is configured to perform determining subsequent to the specific node and derive the branch.

Abstract: A measuring apparatus (100a, 1a) includes a light source (110) configured to emit probe light; a total reflection member (16) in contact with a to-be-measured object and configured to cause total reflection of the probe light that is incident; a light intensity detector (17) configured to detect light intensity of the probe light exiting from the total reflection member (16); an output unit (2) configured to output a measurement value obtained on the basis of the light intensity; a first support (31) supporting the light source (110) and the light intensity detector (17); and a second support (32) provided to the first support (31), detachable from the first support (31), and supporting the total reflection member (16).

Abstract: An information processing system that improves the usability of the overall information processing system. The processing system, which includes an image processing apparatus and is capable of communicating with an audio control apparatus, outputs response information, as a response to the command generated based on a user's audio received through the audio control apparatus, wherein. Specifically, the processing system (a) in accordance with that a predetermined command generated based on first audio information received from an audio control apparatus associated with a first attribute information is obtained, outputs a first type of response information as a response to the predetermined command, and (b) in accordance with a predetermined command generated based on second audio information received from an audio control apparatus associated with a second attribute information is obtained, outputs a second type of response information as the response to the predetermined command.

Abstract: A biological information measuring device (100a) includes a light source configured to emit probe light; a total reflection member (16) configured to totally reflect the probe light with the total reflection member (16) brought into contact with a subject (S) to be measured; a light intensity detector configured to detect light intensity of the probe light reflected from the total reflection member (16); a biological information output unit (2a) configured to output biological information, the biological information being acquired based on the light intensity; and a display unit (506) configured to display the light intensity or an absorbance of the probe light, the absorbance being acquired based on the light intensity. Preferably a pressure detector is provided configured to detect a pressure of the subject (S) with respect to the total reflection member (16).

Abstract: A learning device includes a data storage unit configured to store learning data for learning a decision tree; a learning unit configured to determine whether to cause learning data stored in the data storage unit to branch to one node or to the other node of lower nodes of a node based on a branch condition for the node of the decision tree; and a first buffer unit and a second buffer unit configured to buffer learning data determined to branch to the one node and the other node, respectively, by the learning unit up to capacity determined in advance. The first buffer unit and the second buffer unit are configured to, in response to buffering learning data up to the capacity determined in advance, write the learning data into continuous addresses of the data storage unit for each predetermined block.