International Business Machines Corporation

Taiyo Yuden Co., Ltd.

Ryo Iwaki

Takayuki Osogami

Mamoru Ishida

Tasuku Kawashima

An acoustic wave device includes a substrate, lower and upper electrodes provided over the substrate, a piezoelectric film that is provided over the substrate, is interposed between the lower and upper electrodes, and has a pair of through holes that sandwich a resonance region therebetween in a first direction, are provided along the resonance region, and are connected to an air gap that is formed between the substrate and the lower electrode and overlaps the resonance region in the plan view, the lower and upper electrodes overlapping across the piezoelectric film in the resonance region, and additional films that are not provided in a central region of the resonance region in the plan view and are provided in respective edge regions, which are located on respective sides of the central region in a second direction substantially orthogonal to the first direction in the plan view, of the resonance region.

Acoustic wave device, filter, multiplexer, and manufacturing method of acoustic wave device

A computer-implemented method is provided for evaluating a next action of a target object in an environment. The method includes simulating, by a hardware processor for each of possible actions of the target object in the environment, a next state occurring thereafter to obtain a plurality of simulated next states, based on a pessimistic scenario which is randomly generated by sampling a plurality of costs from a distribution of cost. The distribution of cost is an area where the target object is likely to visit in a near future. The method further includes identifying, by the hardware processor, a safety area for the target object in each of the plurality of simulated next states. The method also includes evaluating, by the hardware processor, each of the possible actions of the target object, based on the safety area.

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Tokyo, Japan

Ryo Iwaki