Abstract: The present disclosure provides a method and a catalyst for selective oligomerization of ethylene. The raw material for the catalyst consists of a dehydropyridine annulene-type ligand, a transition metal compound, and an organometallic compound in a molar ratio of 1:0.5-100:0.1-5000. The present disclosure also provides a method for selective oligomerization of ethylene accomplished by using the above-mentioned catalyst. The catalyst for selective oligomerization of ethylene has high catalytic activity, high selectivity for the target products 1-hexene and 1-octene, and low selectivity for 1-butene and 1-C10+.

Abstract: A positioning method, a positioning device, a positioning system, a storage medium, and a construction method for an offline map database. The positioning method includes: obtaining a current image information, and extracting a visual feature in the current image information; matching the visual feature in the current image information with a key frame in an offline map database, and determining a candidate key frame similar to the visual feature in the current image information, wherein the offline map database is generated based on a global grid map and a visual map; and determining a pose corresponding to the candidate key frame, and converting the pose to coordinate values.

Abstract: Provided herein is a novel antibody exhibiting binding affinity and specificity to galectin-7. Also provided herein are methods for treating psoriasis or cancer in a subject by administering to the subject a drug selected with the aid of the present anti-galectin-7 antibody.

Abstract: Technology provided herein relates in part to non-invasive classification of one or more genetic copy number alterations (CNAs) for a test sample. Certain methods include sampling a quantification of sequence reads from parts of a genome, generating a confidence determination, and using the confidence determination to enhance classification. Technology provided herein is useful for classifying a genetic CNA for a sample as part of non-invasive pre-natal (NIPT) testing and oncology testing, for example.

Abstract: Embodiments of the present disclosure present and approach for automatic generation of short names for a named entity. According to the approach, a standard text segment is obtained, which indicates a full name of a named entity. At least one feature representation of the standard text segment is extracted. A plurality of variant text segments are generated based on the at least one feature representation using a generative learning network. The plurality of variant text segments indicate a plurality of short names for the named entity, the generative learning network characterizing a generation of variants for an input text segment. The plurality of variant text segments are stored in association with the standard text segment into a data repository.

Abstract: An approach is provided for generating graph database parameter settings. Parameter settings for importing data into a graph database are determined. A speed of importing simulated data into the graph database and a system resource usage are determined by executing an importing of the simulated data using the parameter settings and a simulated hardware environment. A reward associated with the parameter settings is determined. Using a policy network that includes convolutional neural networks and based on the reward and the settings, candidates of adjusted parameter settings are determined. Using a Monte Carlo tree search in multiple iterations to estimate changes in speeds of importing the simulated data and changes in system resource usages for candidates of the adjusted parameter settings, rewards for the candidates are determined. Based on the rewards, a candidate is selected as including final parameter settings that optimize an importing speed and system resource usage.

Abstract: A time correction device for a PET system comprises a detector ring, a ring-shaped prosthesis, and detection, data acquisition, data coincidence, time shift calculation, data correction application modules. Center of the ring-shaped prosthesis overlaps with axial and radial center of the detector ring. The detection module is located in ring-shaped prosthesis. Center of the detection module is at the center of the ring-shaped prosthesis. The data acquisition module comprises data gathering and energy filtering modules connected to each other. The data gathering module comprises detectors and the detection module. The energy filtering module connects to the data gathering module receiving single-event time information. The data coincidence module is connects to the energy filtering module receiving the single-event time information. Time shift calculation module connects to the data coincidence module providing a shift value of the detectors.

Abstract: What is disclosed are systems and methods for compensating for display OLED degradation. Correction factors k for OLED degradation of each sub-pixel is modelled and tracked based on grey level, temperature, and time, and used to correct image data provided to an OLED display.

Abstract: The present disclosure provides a line segment detection method, apparatus, device, and a computer-readable storage medium. Said method includes: extracting image features of an image to be processed, the image features including an image gradient angle and an image gradient amplitude; determining a plurality of seed points based on the extracted image features; for each seed point of the plurality of seed points, determining a current connected region of respective seed point according to a region growth rule, wherein the region growth rule needs to satisfy both a gradient amplitude growth rule and a gradient angle growth rule simultaneously; and performing line segment fitting on line segments within the current connected region of respective seed point.

Abstract: Provided is a method, computer program product, and system for fusing knowledge graphs to generate a larger knowledgebase for responding to cross document questions. A processor may extract contextual information from a plurality of documents. The processor may generate, based on the extracted contextual information, a knowledge graph for each document of the plurality of documents. The processor may analyze each knowledge graph to determine if one or more entities of each knowledge graph are linked. The processor may fuse, in response to an entity in a first knowledge graph being linked to an entity in a second knowledge graph, the first knowledge graph with the second knowledge graph to create a fused knowledge graph.

Abstract: Embodiments of the present disclosure relate to generation of natural language expression variants. In an embodiment, a computer-implemented method is disclosed. According to the method, a structured expression is determined for a source expression in a natural language by replacing a source key entity in the source expression with a predetermined symbol. At least one template structured expression is selected from a set of template structured expressions based on respective similarities between the structured expression and respective template structured expressions in the set. Each of the set of template structured expressions comprises the predetermined symbol to represent a key entity. At least one variant expression is generated for the source expression by replacing the predetermined symbol in the at least one selected template structured expression with the source key entity. In other embodiments, a system and a computer program product are disclosed.

Abstract: Disclosed are a device and a method for determining the solubility of elemental sulfur in a sulfur-containing gas. The device includes a displacement pump, a first sampler, a high-temperature box, a back-pressure pump, a control valve, an adsorption tank, a low-temperature box, a flow meter and a collection tank. An outlet of the displacement pump is in communication with an inlet of the first sampler; an outlet of the first sampler is in communication with a first inlet of the control valve; a second inlet of the control valve is in communication with an outlet of the back-pressure pump; an outlet of the control valve is in communication with a first opening of the adsorption tank; a second opening of the adsorption tank is in communication with the flow meter; and a third opening of the adsorption tank is in communication with the collection tank.

Abstract: In embodiments, a method includes receiving a first user input to a chat managed by a multiple-round dialogue system, receiving a second user input to the chat, the second user input following the first user input, and embedding the first and second user inputs into first and second nodes, respectively, each node including a multi-dimensional vector. The method further includes determining, based at least in part on the first node and the second node, if a context of the second user input is the same as a context of the first user input, and, based on the determination, generating a chat reply to the second user input.

Abstract: A card edge connector includes an insulative housing defining a card receiving slot extending along a longitudinal direction, a plurality of terminals retained in the housing and by two sides of the card receiving slot in a transverse direction perpendicular to the longitudinal direction, and a metallic guiding member retained to the housing at the end of the card receiving slot. The metallic guiding member includes a main body extending in a vertical direction perpendicular to both the longitudinal direction and the transverse direction, and a curved resilient guiding section upwardly extending from a top end of the main body. The housing forms a constraining wall at the end with a step structure so as to allow the guiding section of the guiding member to be freely support upon the step structure to function as a constrained beam during confrontation with the inserted card module.

Abstract: In embodiments, a method includes receiving a first user input to a chat managed by a multiple-round dialogue system, receiving a second user input to the chat, the second user input following the first user input, and embedding the first and second user inputs into first and second nodes, respectively, each node including a multi-dimensional vector. The method further includes determining, based at least in part on the first node and the second node, if a context of the second user input is the same as a context of the first user input, and, based on the determination, generating a chat reply to the second user input.

Abstract: In an approach for a text block recognition in a document, a processor detects characters in the document using an object detection technique. A processor identifies positions of the detected characters in the document. A processor analyzes semantic connectivity among the detected characters based on the positions and semantic connectivity of the characters. A processor recognizes text blocks of related characters based on the semantic connectivity analysis. A processor outputs the text blocks associated with the related characters.

Abstract: A method, system, and computer program product for reconstructing training data and building a new incremental learning model with the reconstructed training data that can be further trained. The method may include receiving new data to be inputted into a previously trained machine learning model, where the previously trained machine learning model has inaccessible training data. The method may also include generating simulated training data using a reverse form of the previously trained machine learning model. The method may also include verifying the simulated training data. The method may also include creating a new machine learning model using the simulated training data, where the new machine learning model includes a same structure as the previously trained machine learning model. The method may also include inputting the new data into the new machine learning model, where the new machine learning model is further trained with the new data.

Abstract: Disclosed are a product inspection method and device, producing system and a computer storage medium. The method comprises: conducting image acquisition on a product assembly line to obtain a production line image; extracting a product image including a product to be inspected from the production line image; extracting an inspection point image in a part inspection area in the product image; inputting the inspection point image into an inspection model to obtain an inspection result; and determining that the product to be inspected in the product image has defects under the condition that the inspection result meets any of the following conditions.

Abstract: A continuous time linear equalization (CTLE) circuit is disclosed. The CTLE circuit includes a passive CTLE circuit and an active CTLE circuit. The active CTLE circuit includes a differential transistor pair and the output of the passive CTLE is configured to drive gates or bases of the differential transistor pair.

Abstract: An aspect of the present invention discloses a method for extracting content from a document. The method includes one or more processors identifying a visual anchor corresponding to a text element depicted in a first document utilizing an edge detection analysis. The method further includes determining edge coordinates of the text element depicted in the first document. The method further includes determining text at a leading edge of the text element depicted in the first document and text at a trailing edge of the text element depicted in the first document, based on the determined edge coordinates. The method further includes extracting a complete version of the text element depicted in the first document, from a plain text version of the first document, utilizing the determined text at the leading edge of the text element and the determined text at the trailing edge of the text element.