Abstract: A learning device includes an acquisition unit that acquires a local model corresponding to a feature value held by the own device, a residual calculation unit that calculates a difference between an output of a vertical federated learning model having been learned previously and an output of the local model acquired by the acquisition unit, and an additional tree learning unit that learns an additional tree to be added to the local model acquired by the acquisition unit, on the basis of the result of calculation by the residual calculation unit and the feature value held by the own device.

Abstract: An optical shaping method according to the present invention is an optical shaping method for shaping a three-dimensional structure by repeating a process for forming a cured resin layer 53 by irradiating an optically curing resin liquid 51 with light so that cured resin layers 53 are laminated. The process for forming the cured resin layer 53 includes, while applying a sheet light Ls to the optically curing resin liquid 51, applying a first light beam L1 intersecting the sheet light Ls to this optically curing resin liquid, and thereby forming the cured resin layer 53 in an area where the sheet light Ls intersects the first light beam L1. The irradiation place of the sheet light Ls is moved and the process for forming the cured resin layer 53 is repeated.

Abstract: An optical shaping method according to the present invention is an optical shaping method for shaping a three-dimensional structure by repeating a process for forming a cured resin layer 53 by irradiating an optically curing resin liquid 51 with light so that cured resin layers 53 are laminated. The process for forming the cured resin layer 53 includes, while applying a sheet light Ls to the optically curing resin liquid 51, applying a first light beam L1 intersecting the sheet light Ls to this optically curing resin liquid, and thereby forming the cured resin layer 53 in an area where the sheet light Ls intersects the first light beam L1. The irradiation place of the sheet light Ls is moved and the process for forming the cured resin layer 53 is repeated.