Abstract: A groove having any length is manufactured in a quartz-based waveguide chip without limitation of a chip size. A marker indicating a planned cutting line extending from a connection end surface of a quartz-based waveguide chip in an in-chip plane direction is formed in advance by processing a core layer of the waveguide of the quartz-based waveguide chip, an irradiation position of laser light is aligned with a position of a starting point of the marker in a state where quartz-based waveguide chip is placed on a stage, and a groove is manufactured in the connection end surface of the quartz-based waveguide chip by moving the stage in the extending direction of the marker while irradiating the quartz-based waveguide chip with the laser light from an upper side.

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 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: The zoom lens consists of, in order from the object side, a positive first lens group G1, a negative second lens group G2, a negative third lens group G3, a stop, and a positive fourth lens group G4. During zooming, the first lens group G1 and the fourth lens group G4 remain stationary, and the second lens group G2 and the third lens group G3 move. The first lens group G1 consists of, in order from the object side, a negative first lens group front group G1A that remains stationary during focusing, a positive first lens group intermediate group G1B that moves during focusing, and a positive first lens group rear group G1C that remains stationary during focusing. The following conditional expression relating to an Abbe number ?n1A2 of the second negative lens from the object side is satisfied: 65<?n1A2<110.

Abstract: A zoom lens consists of, in order from an object side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a positive fifth lens group. During zooming, the first lens group is fixed, and distances between the respective lens groups change in predetermined manners. The first lens group consists of, in order from the object side, a negative lens group fixed during focusing, a positive lens group movable during focusing, and a positive lens group fixed during focusing. The lens group has on the most image side four lenses of, in order from the object side, a positive lens, a cemented lens in which a negative meniscus lens having a convex surface facing the object side and a positive lens are cemented, and a positive meniscus lens having a convex surface facing the object side.

Abstract: The zoom lens consists of, in order from an object side, a positive first lens group, a negative second lens group, a third lens group, a positive fourth lens group, and a positive fifth lens group. During zooming, the second lens group, the third lens group, and the fourth lens group move. The first lens group consists of, in order from an object side, a negative first a lens group, a positive first b lens group that moves during focusing, and a positive first c lens group. A most-image-side lens of the first b lens group is a negative meniscus lens having a convex surface facing an object side.

Abstract: The zoom lens consists of, in order from an object side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a positive fifth lens group. During zooming, the second lens group, the third lens group, and the fourth lens group move. The first lens group consists of, in order from an object side, a negative first a lens group, a positive first b lens group that moves during focusing, and a positive first c lens group. The second lens group includes one positive lens and one or more negative lenses successively in order from a most object side to an image side.

Abstract: The zoom lens consists of, in order from an object side, a positive first lens group, a negative second lens group, a third lens group, a positive fourth lens group, and a positive fifth lens group. During zooming, the second lens group, the third lens group, and the fourth lens group move. The fourth lens group includes a plurality of positive lenses and a negative lens disposed on a most-image-side. Assuming that an average value of Abbe numbers in positive lenses within the fourth lens group is vdp and an Abbe number of a negative lens disposed on a most-image-side of the fourth lens group is vdn, the zoom lens satisfies a conditional expression: 0<vdp?vdn<15.

Abstract: The zoom lens consists of, in order from an object side, a positive first lens group, a negative second lens group, a third lens group, a positive fourth lens group, and a positive fifth lens group. During zooming, the second lens group, the third lens group, and the fourth lens group move. The second lens group has a negative lens and a cemented lens successively in order from a most object side to an image side. The cemented lens of the second lens group has a first negative lens and a first positive lens successively in order from an object side to an image side. A predetermined conditional expression for the first positive lens is satisfied.

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.

Abstract: A zoom lens has, in order from an object side, a focusing unit including a focusing lens group moving for focusing, a variable magnification unit including at least two variable magnification lens groups moving while changing a mutual interval for variable magnification, an aperture stop, and an image forming unit including an image forming lens group. The image forming unit consists of, in order from the object side, an M1 lens group, an M2N lens group, and an M3 lens group. The M2N lens group is replaceable with an M2E lens group that enlarges an image forming magnification. The M2E lens group satisfies predetermined conditional expressions (1) to (4).

Abstract: A zoom lens consists of, in order from an object side, a positive first lens group fixed relative to the image surface during zooming, at least two movable lens groups including a negative second lens group being adjacent to the first lens group, the at least two movable lens groups being movable by changing a distance in an optical-axis direction to an adjacent group during zooming; and a final lens group arranged on the most image side and fixed relative to the image surface during zooming. The first lens group has, continuously in order from the most object side, a first negative lens having a concave surface facing an image side, a second negative lens, and a third positive lens. A predetermined conditional expression relating to the first lens group is satisfied.

Abstract: An extender lens is removably inserted into a master lens, performs an increase in a focal length without changing an imaging position due to insertion, and consists of a positive first lens group and a negative second lens group in order from the object side. The first lens group consists of one or more positive lenses in order from the object side, and a three-lens cemented lens having three lenses of a positive lens, a negative lens, and a positive lens having cemented together in order from the object side. The following Conditional Expression (1) relating to an Abbe number ?1n of the negative lens of the three-lens cemented lens is satisfied: 26<?1n<40.

Abstract: A zoom lens consists of, in order from an object side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a positive fifth lens group. During zooming from a wide angle end to a telephoto end, the first lens group is fixed relative to an image surface, and distances between the respective lens groups change in predetermined manners. The second lens group consists of predetermined four lens components.

Abstract: An apparatus and a method are disclosed, each of which applies a plurality of different spatial filters to one input image to generate a plurality of filtered images; calculates, for each of a plurality of pixels included in each of the plurality of filtered image, a score indicating a value determined by a difference from a corresponding one of a plurality of model groups, using the plurality of model groups that respectively correspond to the plurality of filtered images and each including one or more models having a parameter representing a target shape; calculates an integrated score indicating a result of integrating the scores of the respective plurality of pixels corresponding to each other over the plurality of filtered images; and determines an abnormality based on the integrated score.

Abstract: The zoom lens consists of, in order from an object side, a first lens group having a positive power, a second lens group having a positive power, a third lens group having a negative power, a fourth lens group having a negative power, and a fifth lens group having a positive power. During zooming, the first lens group and the fifth lens group remain stationary, and the other lens groups move. The following conditional expression relating to a focal length f1 of the first lens group and a focal length f3 of the third lens group is satisfied: ?10<f1/f3<?3.5.

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. The learning device includes a plurality of learning units and a plurality of performance calculators. The plurality of learning units are configured to perform learning of the decision tree using learning data divided into pieces to be stored in a plurality of data memories. The plurality of performance calculators are each configured to calculate an index value of index values for each of the plurality of data memories, the index value indicating recognition performance of the decision tree learned by corresponding one of the plurality of learning units.

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: According to one embodiment, a POS device includes a housing, a cover, a first detector, and a first driving mechanism. The housing includes an accommodation chamber configured to accommodate a product to which an RFID tag is attached, an opening portion for putting the product into the accommodation chamber being formed in the housing. The cover is configured to open and close the opening portion. The first detector is configured to detect whether a person is present near the housing. The first driving mechanism is configured to transition the cover from a closed state in which the cover closes the opening portion to an open state in which the cover opens the opening portion, based on the detection of the person by the first detector.