Abstract: Provided is a concealment signal generation unit that acquires learning constellation data and identification constellation data output from a signal processing circuit for optical communication, reduces and conceals the number of pieces of data from each of the pieces of constellation data through random projection, and generates a learning concealment signal and an identification concealment signal based on each piece of constellation data after the reduction and concealment of the number of pieces of data. Provided are a sparse dictionary learning unit that learns a concealment sparse dictionary using a sparse dictionary learning algorithm based on the learning concealment signal; and an identification unit that estimates a state of the optical communication using the concealment sparse dictionary based on the identification concealment signal.

Abstract: According to one embodiment, an information processing apparatus includes a preference information obtainer that obtains preference information indicating preferences of a target user to which recommendation is to be made, the preferences ranging over a plurality of genres. The information processing apparatus includes a recommendation item determiner that determines, using the preference information of the target user and recommendation candidate information about a plurality of recommendation candidates ranging over a plurality of genres, a recommendation item to be recommended to the target user from the plurality of recommendation candidates, the recommendation candidate information being stored in an accessible storage apparatus.

Abstract: A regenerative power-amount estimation device according to an embodiment includes a regenerative power-amount estimation model for each brake notch switching configured to include a transient response of an electric brake corresponding to a switching operation of a brake notch for each switching operation of the brake notch in an operation of railway vehicles. A regenerative power-amount estimation part is configured to estimate an expected amount of regenerative power acquired for a brake plan being temporal transition data of the brake notch, based on the regenerative power-amount estimation model for each brake notch switching.

Abstract: According to one embodiment, an information processing apparatus includes a preference information obtainer that obtains preference information indicating preferences of a target user to which recommendation is to be made, the preferences ranging over a plurality of genres. The information processing apparatus includes a recommendation item determiner that determines, using the preference information of the target user and recommendation candidate information about a plurality of recommendation candidates ranging over a plurality of genres, a recommendation item to be recommended to the target user from the plurality of recommendation candidates, the recommendation candidate information being stored in an accessible storage apparatus.

Abstract: A photogravure printing press includes plurality of cells defined by printing-direction walls and substantially perpendicular walls formed in each of image areas on the circumferential surface of a gravure roll. A plurality of substantially perpendicular cuts are formed in each of the substantially perpendicular walls. In the central portion of the image area, each of the substantially perpendicular cuts is formed so as to have a gap greater than the width of each of the printing-direction walls and the substantially perpendicular walls.

Abstract: A photogravure printing press includes plurality of cells defined by printing-direction walls and substantially perpendicular walls formed in each of image areas on the circumferential surface of a gravure roll. A plurality of substantially perpendicular cuts are formed in each of the substantially perpendicular walls. In the central portion of the image area, each of the substantially perpendicular cuts is formed so as to have a gap greater than the width of each of the printing-direction walls and the substantially perpendicular walls.

Abstract: A photogravure printing press includes plurality of cells defined by printing-direction walls and substantially perpendicular walls formed in each of image areas on the circumferential surface of a gravure roll. A plurality of substantially perpendicular cuts are formed in each of the substantially perpendicular walls. In the central portion of the image area, each of the substantially perpendicular cuts is formed so as to have a gap greater than the width of each of the printing-direction walls and the substantially perpendicular walls.