105 results about "Split point" patented technology

A PCD drill for producing close tolerance holes in multi layer laminates, such as carbon fiber reinforced composites, with minimum fraying of the fibers on both entrance and exit from the hole is provided. The drills provided include a symmetrical cutting point with a self-centering split point and a high shear second cutting lip positioned at the outer diameter of the drill. The drills of the invention may allow for increased cutting speeds and feeds when used with such advanced composite materials, thus increasing tool productivity and providing increased performance.

A method and system for generating a decision-tree classifier from a training set of records, independent of the system memory size. The method includes the steps of: generating an attribute list for each attribute of the records, sorting the attribute lists for numeric attributes, and generating a decision tree by repeatedly partitioning the records using the attribute lists. For each node, split points are evaluated to determine the best split test for partitioning the records at the node. Preferably, a gini index and class histograms are used in determining the best splits. The gini index indicates how well a split point separates the records while the class histograms reflect the class distribution of the records at the node. Also, a hash table is built as the attribute list of the split attribute is divided among the child nodes, which is then used for splitting the remaining attribute lists of the node. The method reduces I / O read time by combining the read for partitioning the records at a node with the read required for determining the best split test for the child nodes. Further, it requires writes of the records only at one out of n levels of the decision tree where n> / =2. Finally, a novel data layout on disk minimizes disk seek time. The I / O optimizations work in a general environment for hierarchical data partitioning. They also work in a multi-processor environment. After the generation of the decision tree, any prior art pruning methods may be used for pruning the tree.

A diamond coated drill capable of drilling holes in fiber reinforced composite materials. The drill is made from a tungsten carbide (WC) substrate with cemented cobalt (Co) in a range between about 3 to 10 wt. % and a diamond coating having a thickness in a range between 3 to 20 microns. The drill includes a shank, a longitudinal axis and includes two flutes at a helix angle that is in a range between 25 and 35 degrees with respect to the axis. A margin width is maintained between about 5 to 10 percent of the drill diameter. A body clearance diameter is maintained at between about 92 to 96 percent of the drill diameter. A web thickness before splitting is about 20 to 30 percent of the drill diameter. A clearance angle or lip relief angle is between about 10 and 20 degrees. A chisel edge angle is between about 105 and 120 degrees. A chisel edge length is up to about 0.035 mm. A splitting angle is between about 130 and 150 degrees. A notch angle is between about 30 and 40 degrees with respect to the drill axis. A notch rake angle lies between about −5 and 10 degrees. A split point angle is between about 70 and 100 degrees, and preferably about 90 degrees.

A content editing apparatus includes: an analyzing portion analyzing a content file having a format where control information including reproduction conditions of media data and the media data are separately stored in a header portion and a media data portion, respectively, and determining a division point of the media data portion according to a predetermined size; a media data dividing portion dividing the media data portion based on the division point; a header dividing portion dividing the header portion into a plurality of divided header portions based on a division place of the media data portion; and a preparing portion for preparing a plurality of divided content files where the plurality of divided media data portions and the plurality of divided header portions are combined.

Methods and systems for a distributed transaction in a distributed database system are described. One example includes identifying a request to insert a split point in a source group comprising one or more tablet replicas, each tablet including at least a portion of data from a table in the distributed database system, and the split point splitting data in the source group into a first range and a second range different than the first range; in response to the request: sending a list of filenames in the first range of the source group to a first target group comprising one or more tablet replicas; and creating, at the first target group, a virtual copy of files represented by the list of filenames in the first range, the virtual copy making data of the files available, each using a new name, without duplicating the data of the files.

The embodiment of the invention discloses a method and device for constructing a decision tree. The specific embodiment of the method comprises the steps of sending a request for obtaining statisticalinformation of attribute information of a target category to at least one client; receiving the statistical information of the attribute information of the target category of the sample respectivelystored in each client; generating split point information according to the statistical information of the attribute information of the target category of the sample stored by each client; and sendingthe split point information to at least one client. According to the implementation mode, the content of information interaction is greatly reduced, privacy protection is achieved, and meanwhile the efficiency of the model is improved.

The invention discloses a Bezier fitting method of a complex curve. The Bezier fitting method of the complex curve comprises the following steps of utilizing a fixed chord-arc ratio based method to accurately determine the position of a G1 split point of the curve, decomposing the curve into curve sections with small bending changes and retaining the G1 continuity of the curve at the split point; adopting a direct curve control point adjusting method to independently perform Bezier fitting on the curve sections and accordingly ensuring the G1 continuity of any adjacent Bezier curves and high algorithmic effectiveness. By means of the Bezier fitting method, the Bezier curve fitting can be efficiently performed on the complex curve.

A diamond coated drill capable of drilling holes in fiber reinforced composite materials. The drill is made from a tungsten carbide (WC) substrate with cemented cobalt (Co) in a range between about 3 to 10 wt. % and a diamond coating having a thickness in a range between 3 to 20 microns. The drill includes a shank, a longitudinal axis and includes two flutes at a helix angle that is in a range between 25 and 35 degrees with respect to the axis. A margin width is maintained between about 5 to 10 percent of the drill diameter. A body clearance diameter is maintained at between about 92 to 96 percent of the drill diameter. A web thickness before splitting is about 20 to 30 percent of the drill diameter. A clearance angle or lip relief angle is between about 10 and 20 degrees. A chisel edge angle is between about 105 and 120 degrees. A chisel edge length is up to about 0.035 mm. A splitting angle is between about 130 and 150 degrees. A notch angle is between about 30 and 40 degrees with respect to the drill axis. A notch rake angle lies between about -5 and 10 degrees. A split point angle is between about 70 and 100 degrees, and preferably about 90 degrees.

The invention provides a character segmentation method and device. According to the method and device, multiple continuous touching characters can be segmented into complete single characters, the condition that a complete character is segmented into halves is avoided, and the accuracy rate of character recognition is increased to a certain extent. The character segmentation method comprises the steps that a to-be-segmented character image is subjected to vertical projection, the middle points of blank spaces are looked up from the projected image to serve as pre-segmentation points, and thena pre-segmentation point set is obtained, wherein the blank spaces are points of which vertical projection values are less than a set value; the average width of single characters is calculated according to the total character number and the total character width; the pre-segmentation point set is traversed, the space between every two pre-segmentation points is calculated, and an actual segmentation point set is determined by combining the average width of the single characters; and the actual segmentation point set is traversed, pixel points between the adjacent actual segmentation points are determined, and then a single character image after segmentation of the to-be-segmented image is obtained.

A musical performance processing apparatus that provides better assistance for student's practice. The apparatus includes a main unit in which music data including performance information of right- and left hand parts is stored, and a performance terminal having a keyboard divided into two key ranges by a split point. Each key range is set as a tapping or normal performance key range. The main unit generates a musical tone when input with performance information generated by depression of a key in the normal performance key range, and automatically reproduces performance information of designated part of music data for the number of beats corresponding to key depression, when input with performance information generated by depression of a key in the tapping performance key range. Sounding is stopped, if there is a deviation between a tempo of teacher's tapping performance and timing of student's performance.

The invention provides a block chain splitting processing method, device, a block chain node and a storage medium. The method comprises the following steps: obtaining a splitting parameter, wherein the splitting parameter at least comprises a target block chain identifier to be splitted, a splitting point block identifier and at least two service types; according to the service type, the target block chain corresponding to the target block chain identifier is split from the corresponding block of the split point block identifier. By splitting the target block chain corresponding to the targetblock chain,according to the service type, from the block corresponding to the split point block identifier, the block chain with mixed multiple service type data can be split to block chains corresponding to different service types, that is, one block chain can be split into a plurality of block chains, so as to improve the flexibility and manageability of the block chain, thereby improving the management efficiency of the block chain, and can improve the operation efficiency. After splitting, services that can only be executed in serial mode can be executed in parallel.

A method for plotting a distribution area of a plurality of data points each having two paired variables in a scatter diagram includes (a) dividing a distribution of data points into at least two division areas in one or more radial directions of the distribution of data points from an arbitrary first central dividing point and selecting a data point having a longest distance from the first central dividing point in each of the division areas as a representative point of the distribution of data points, and (b) plotting a distribution area representing line by sequentially connecting the selected representative points in respective division areas.

The invention relates to a method for determining a power system parallel load flow based on heuristic automatic network partitioning, which comprises the following steps: partitioning distribution network; generating the admittance matrixes of the partitioning nodes, the power flow calculation constant-jacobian matrix and the voltage-power sensitivity matrixes of virtual generators in partitions, sending the voltage-power sensitivity matrixes to a coordination layer; sending initial voltage magnitude and phase angle of virtual engines at the split points by the coordination layer; carrying out power flow calculation on the partitions, sending output power of the virtual engines to a coordination server; judging whether the boundary coordination quantity precision is met or not according to the mismatch quantity of the sum of output power of two virtual engines at the split points by the coordination layer, if no, correcting the voltage of the partitioning points, sending the corrected result to sub-areas, skipping to the last step, and otherwise, skipping to the next step; outputting the data result. The determining method has good convergence, high calculation speed, less memory occupied rate and calculation convenience and flexibility.

A drill sharpener is provided which has a point-splitting port which simplifies the procedure for producing a split point on a drill bit undergoing sharpening. The point-splitting port is positioned relative to a grinding wheel assembly such that, when the drill held by a chuck is advanced toward the grinding wheel, a flute of the drill at the drill tip is brought into contact with the grinding wheel. The port has alignment stops therein which mate with flats provided on the barrel of the chuck to ensure proper alignment of the chuck and drill relative to the grinding wheel. The stops also limit the extent of inward travel of the chuck and drill to a predetermined distance. A debris or grit collection tube is also provided to be inserted into an unused port of the drill sharpener, to contain and confine any debris or grit attempting to exit the sharpener through the unused port.

An image processing apparatus, includes: a transforming area setter, operable to set at least a part of an area of a target image as a transforming area; a transforming area divider, operable to arrange a plurality of dividing points in the transforming area and to divide the transforming area into a plurality of small areas by using a line connecting the dividing points; and a transforming processor, operable to move a position of at least one of the dividing points to transform at least one of the small areas, thereby transforming an image in the transforming area.

A region of a node is searched to find a content-defined split point. A split point of a node is determined based at least in part on hashes of entries in the node and the node is split based on the determined split point. The search region is searched for the first encountered split point and the node is split based on that split point. That split point is based on a predetermined bitmask of the hashes of the entries in the node satisfying a predetermined condition.

The invention relates to the technical field of computers, and provides a variable binning method, a variable binning device, terminal equipment and a storage medium. The variable binning method comprises the steps of acquiring sample data; according to preset variable configuration, determining nominal variables to be binned and feature values corresponding to the nominal variables from the sample data; storing the feature values into a preset feature value set; aiming at each feature value in the feature value set, diving the nominal variables into two bins by using the feature value as a test split point, and computing an associated index value corresponding to each feature value; using the feature value corresponding to the maximum in the associated index values as a target split pointto execute a binning operation; and removing the feature value from the feature value set; and when a binning result reaches a preset bin number threshold, stopping binning, and otherwise, continuously executing the binning operation. According to the technical scheme provided by the invention, the binning operation is automatically performed on the nominal variables based on the associated indexvalues, manual intervention and consumed time are reduced, and the binning efficiency of the binning operation is improved.

A method for compensating for polarization mode dispersion of an incoming optical communications signal including the step of orienting the state of polarization of the incoming optical communications signal with respect to the axes of a polarization splitter. The communications signal is split into a first and a second orthogonal states of polarization at a split point. The first of the polarization states is directed to a first birefringent optical waveguide having a first chirped grating having a first reference reflection point. The second of the polarization states is directed to a second birefringent optical waveguide having a second chirped grating having a chirp pattern substantially similar to that of the first chirped grating and having a second reference reflection point. The optical path length from the second reflection point to the split point is adjustably varied to compensate for polarization dispersion between the first and second states of polarization. The first and second polarization states are then recombined into an output signal.

The invention provides a news splitting method. The method comprises the following steps: obtaining audio frames and video frames of news to be split; preprocessing the audio frame, obtaining mute time periods, and obtaining a sentence segmentation starting time point and a sentence segmentation ending time point corresponding to each mute time period; preprocessing the video frame, and obtaining anchor feature data; extracting video frames corresponding to the sentence segmentation starting time points and the sentence segmentation ending time points to obtain corresponding sentence segmentation starting images and sentence segmentation ending images; judging whether anchor switching exists between the sentence segmentation starting images and the sentence segmentation ending images or not according to the anchor feature data, and when anchor switching exists, extracting a corresponding video frame according to a corresponding mute time period to obtain a pause paragraph; and obtaining to-be-split points of the pause paragraph, and splitting the news video according to each to-be-split point. According to the method, the pause paragraphs with anchor switching are screened out through the anchor feature data, then the to-be-split points are judged to perform news splitting, the processing speed can be increased, and the accuracy is improved.

The presently claimed invention offers programmable and precise regulation of Cas9 functions by utilizing a set of compact Cas9 derivatives created by deleting conserved HNH and / or REC-C domains based on the structural information across variant class 2 CRISPR effectors. In addition, a novel strategy for engineering the dimeric gRNA-guided nuclease by splitting the mini-dSaCas9 and fusing the FokI domain right after the split point is claimed to increase the on-target DNA cleavage efficiency and potentially reduce the off-target effect because of a closer proximity of dimeric FokI nuclease to the target sequence. By combining the optimized and compact gRNA expression cassette and the downsized SaCas9 derivatives, the entire CRISPR / Cas system with different effector domains for transactivation, DNA cleavage and base editing is loaded into a single AAV virus. Such an all-in-one AAV-CRISPR / Cas9 system will be particularly appealing in biomedical applications that require safe and efficient delivery in vivo.

The embodiment of the invention provides a parallel generation method and device of a decision tree on the basis of a layered strategy. The decision tree is constructed according to layers downstream from the top; when the splitting attribute and the optimal split point of each node of an nth layer are calculated, a training data set only needs to be scanned for one time, each piece of training data in the training data set is classified into each node of the nth layer according to the filter condition of each node of the nth layer; then, the splitting attribute and the optimal split point of each node are independently calculated to generate the node information of each node; and according to the node information of each node of each layer of the decision tree, constructing the decision tree. In the above method, when the splitting attribute and the optimal split point of each node of each layer are calculated, the number of training data of each category in each splitting interval of each attribute in each node is subjected to parallel statistics according to the filtering condition of each node, so that the splitting attribute and the optimal split point of each node of the same layer can be subjected to parallel computation, and the performance of the decision tree is improved.

The embodiments of the application provide a license plate identification method and device, which relate to the technical field of intelligent transportation. The method comprises the following steps: obtaining a license plate image area of a license plate number to be identified; determining character segmentation points in the license plate image area; obtaining alternative character area segmentation modes corresponding to the license plate image area according to the determined character segmentation points; for each of the alternative character area segmentation modes, carrying out character identification on the license plate image area to obtain a character identification result; and obtaining a license plate number corresponding to the license plate image area according to the character identification results. By using the technical scheme in the embodiments of the invention, the compatibility of license plate identification can be improved.

The invention discloses a key frame extraction method based on cosine distance hierarchical clustering, so as to reuse existing action data and reduce redundant information in action capturing data. The rotation amount of a joint point is used as a feature value for segmenting the motion capturing data, noise in the capturing data is removed, high-dimensional data are mapped to low-dimensional data through a dimension reduction method, a cosine distance is then used to calculate a similarity, hierarchical clustering is then adopted for segmentation, and a frame with the minimum Euclidean distance error between the frame gesture in each segmentation point and each section and the mean value is used as a key frame sequence. Extraction on the key frame is high in accuracy and a recall ratio, the extracted key frame has strong summarization and presentation skills, and the method can be used for segmenting the high-dimensional motion capturing data.

An optical low-pass filter for a solid-state image sensor of an offset sampling structure is constituted of first and second optical members. The first optical member splits an incident light ray into a rectilinear ray and a refracted ray whose propagation direction is about 45° to a horizontal direction of the solid-state image sensor. The second optical member splits an incident ray into a rectilinear ray and a refracted ray whose propagation direction is about 90° to the horizontal direction. The optical low-pass filter having this configuration splits the incident light ray into four rays whose split points are at respective corners of a parallelogram. Assuming that Px represents a sampling interval in the horizontal direction, Py represents a sampling interval in the vertical direction, and D1 and D2 represent respective split widths of the incident light rays through the first and second optical members, the split widths D1 and D2 satisfy the following conditions: D1≈Px / {square root}{square root over ( )}2 and Py<=D2<=2.Py.

The invention relates to an analytical device of an online aerosol carbon component acquisition analyzer. The analytical device comprises an analytical device body, a thermal insulation shell, a reflected-laser photoelectric detection joint, a transmitted-laser photoelectric detection joint, a reflected-laser photoelectric detection system and a transmitted-laser photoelectric detection system, wherein the analytical device body is positioned in the thermal insulation shell, and both the reflected-laser photoelectric detection joint and the transmitted-laser photoelectric detection joint are positioned outside the thermal insulation shell; one end of the analytical device body penetrates out of the thermal insulation shell to be fixedly connected with the reflected-laser photoelectric detection joint, and the reflected-laser photoelectric detection system is fixedly arranged in the reflected-laser photoelectric detection joint; the other end of the analytical device body penetrates out of the thermal insulation shell to be fixedly connected with the transmitted-laser photoelectric detection joint, and the transmitted-laser photoelectric detection system is fixedly arranged in the transmitted-laser photoelectric detection joint. The analytical device can reflect the change of blackness of a quartz film in the thickness direction, can also reflect the change of blackness of the surface of the quartz film, and therefore can comprehensively judge OC / EC split points.

The invention provides a digital detecting method of the bending angle of a sheet metal part. The digital detecting method includes: building the point-cloud model C<D> of the appearance face of a part design model, extracting the bent edge base line L<IW> of the part design model, and building a normal plane, a point-cloud model split surface S<S> and a point-cloud model split plane F<S>; cutting and aligning the scanning point-cloud model C<O> of a formed part to obtain a point-cloud model C<MA>, splitting the point-cloud model C<MA>, and allowing the split point-cloud model to intersect with the normal plane Fi<NL> to obtain a point-cloud section coordinate set; respectively fitting the point-cloud coordinate set of a web-area section point-cloud model Ci<IW> and the point-cloud coordinate set of a bent-edge-area section point-cloud model Ci<IF> into straight lines, calculating the included angle of the two straight lines, calculating the bending angle of the formed part, and comparing bending angle with the bending of the design model to obtain the bending angle deviation of the formed part. The digital detecting method digitally detects the bending angle of the bending edge of the sheet metal part, can precisely the sheet metal part and can achieve batch detection of sheet metal parts.

The invention relates to the technical field of traffic and transportation, and provides a charging method for vehicle traffic, charging terminal equipment and a charging system. Through data connection and switching between a vehicle mobile terminal and a road cell communication base station, the vehicle mobile terminal generates and records signaling data which can be used for extracting vehicletraffic information, and uses the signaling data of the vehicle mobile terminal to modify a vehicle driving path restored by an identification point method to obtain the complete vehicle driving path. The modified complete vehicle driving path is split into a plurality of branch road segments according to a road cost split point, the vehicle tolls of various branch road segments are calculated according to different charging standards according to the mileage and the charging standards of various branch road segments, the vehicle tolls of various branch road segment are superposed, and the toll of the complete vehicle driving path of is generated. The charging method for the vehicle traffic provided by the invention solves the problem of path restoration and charging of vehicles at a terminal toll station after the demolition of provincial toll stations.

The invention provides a method for automatically obtaining key data from positioning data of an orbit satellite, and a small number of key data points are selected from a plurality of orbit satellite positioning data and are connected sequentially to form a broken line to describe the orbit, and a combined mathematical model solving key data is built simultaneously, and a concrete calculation method is proposed that: a point which has the longest projection distance in a line segment connected by a starting point and a terminal point is found in a data set from the positioning data of the satellite, if the projection distance is shorter than the specification error, the data set need not be split, or else the point is a split point and divides the data set into two data sets front and back, the respective key points of the new datasets are found in the same way; and the finding of key points continues until all the datasets can not be split, so all the key points are obtained. The invention can automatically and quickly obtain a small number of key data from a plurality of orbit satellite positioning data and effectively save the storage space and improve the real-time location of trains.

Division editing of a movie stream file picked up for a recording application is executed while conforming to a predetermined standard format.When a stream file is divided at an arbitrary division point, a preceding chapter is created by giving padding in an end region of a GOP including the division point in accordance with a length alignment restriction. Furthermore, a first extent of a succeeding chapter is created by copying the GOP including the division point and a GOP immediately succeeding it, a region formed of GOPs after the copied portion is used as a second extent of the succeeding chapter, and padding is given to an end region of the second extent in accordance with the length alignment restriction.