Abstract: A pose graph synchronous localization and mapping computation method based on a 4D millimeter-wave radar includes comparing two consecutive frames of point clouds in a 4D radar point cloud to remove ghost points below a ground surface and random points, estimating a linear velocity and an angular velocity of a device based on Doppler velocity information in the 4D radar point cloud, and estimating and constructing a pose graph using a relative pose transformation, and estimating an optimal pose for the pose graph through graph optimization. To achieve better accuracy for a sparse point cloud, estimated ego vehicle velocity is pre-integrated to obtain an additional relative pose estimate, and loop closure detection is used to identify places already reached.

Abstract: The present disclosure provides a method for acquiring an item placing state, including: sending an acquisition request, wherein the acquisition request includes one or more association relationships, each of the association relationships includes an association relationship between a hot zone and a camera equipment, and one hot zone corresponds to one kind of item; and receiving a placing state of an item corresponding to at least one hot zone, wherein the placing state of the item corresponding to the at least one hot zone is determined according to a current image and a standard image of the at least one hot zone in response to the acquisition request. The present disclosure further provides a processing method, a system for acquiring an item placing state and a processing system.

Abstract: The present disclosure provides a method for acquiring an item placing state, including: sending an acquisition request, wherein the acquisition request includes one or more association relationships, each of the association relationships includes an association relationship between a hot zone and a camera equipment, and one hot zone corresponds to one kind of item; and receiving a placing state of an item corresponding to at least one hot zone, wherein the placing state of the item corresponding to the at least one hot zone is determined according to a current image and a standard image of the at least one hot zone in response to the acquisition request. The present disclosure further provides a processing method, a system for acquiring an item placing state and a processing system.

Abstract: A method for manufacturing an inner drainage biomimetic stent for glaucoma. The inner drainage biomimetic stent for glaucoma comprises: a cylinder tube body with a hollow structure, and a plurality of straight tubes, provided inside the hollow structure of the tube body, for supporting a tube wall of the tube body. Proper placement of the inner drainage biomimetic stent for glaucoma can direct an aqueous humour to smoothly flow through an orifice expanded by the biomimetic stent, into Schlemm's canal.

Abstract: A method and device for constructing a legal knowledge graph based on joint entity and relation extraction. The construction method comprises the following steps: constructing a triple data set; design of a model architecture and training of a model, wherein the model architecture comprises an encoding layer, a head entity extraction layer and a relation-tail entity extraction layer; determination of the relation between the sentences of the text; triple combination and graph visualization. The design of the model framework of the present disclosure adopts a Chinese Bert pre-training model as an encoder. In the entity extraction part, two BiLSTM binary classifiers are used to identify the start position and end position of an entity. The head entity is first extracted, and then the tail entity corresponding to the entity relation is extracted from the extracted head entity.

Abstract: The present disclosure provides a method for acquiring an item placing state, including: sending an acquisition request, wherein the acquisition request includes one or more association relationships, each of the association relationships includes an association relationship between a hot zone and a camera equipment, and one hot zone corresponds to one kind of item; and receiving a placing state of an item corresponding to at least one hot zone, wherein the placing state of the item corresponding to the at least one hot zone is determined according to a current image and a standard image of the at least one hot zone in response to the acquisition request. The present disclosure further provides a processing method, a system for acquiring an item placing state and a processing system.

Abstract: A method for manufacturing an inner drainage biomimetic stent for glaucoma. The inner drainage biomimetic stent for glaucoma comprises: a cylinder tube body with a hollow structure, and a plurality of straight tubes, provided inside the hollow structure of the tube body, for supporting a tube wall of the tube body. Proper placement of the inner drainage biomimetic stent for glaucoma can direct an aqueous humour to smoothly flow through an orifice expanded by the biomimetic stent, into Schlemm's canal.