866 results about "Change points" patented technology

A system (and method) for off-line detection of textual topical changes includes at least one central processing unit (CPU), at least one memory coupled to the at least one CPU, a network connectable to the at least one CPU, and a database, stored on the at least one memory, containing a plurality of textual data set of topics. The CPU executes first and second processes in first and second directions, respectively, for extracting a segment having a predetermined size from a text, computing likelihood scores of a text in the segment for each topic, computing likelihood ratios, comparing them to a threshold, and defining whether there is a change point at the current last word in a window.

A compact low-profile low-cost imaging lens with a small F-value which offers a wide field of view and corrects aberrations properly. Its elements are spaced from each other and arranged from an object side to an image side as follows: a first positive lens having a convex object-side surface; a second negative lens; a third positive or negative lens; a fourth positive or negative lens; a fifth positive or negative lens; a sixth positive or negative lens; and a seventh lens as a double-sided aspheric lens having a concave image-side surface. The third to sixth lenses each have at least one aspheric surface. The aspheric image-side surface of the seventh lens has a pole-change point off an optical axis. The imaging lens satisfies a conditional expression −1.0<f1/f2<−0.15, where f1 denotes focal length of the first lens, and f2 denotes focal length of the second lens.

An information processing apparatus includes: an image processing unit that performs image processing for video data; and a detection unit that detects a scene change point where available to start or to cancel the image processing by the image processing unit based on a brightness signal in the video data having a value in a predetermined range.

A mobile information terminal to determine whether a user's operation state is one-handed operation or two-handed operation. The mobile information terminal includes a pressure sensor array that acquires a gripping pressure distribution; a gripping pressure logger that records time-series changes in gripping pressure at each pressure sensor forming the pressure sensor array; a gripping pressure change point detection unit that includes a gripping pressure change amount calculation section that acquires time-series changes in gripping pressure at each pressure sensor and determines whether the amount of change in gripping pressure per unit time exceeds a predetermined value at any pressure sensor; and an operation state determination section that determines the operation state of the user of the mobile information terminal is one-handed operation when the amount of change in gripping pressure per unit time exceeds the predetermined value at any pressure sensor.

Methods and systems for a generic key packet for MPEG-2 transport scrambling and descrambling are disclosed and may comprise descrambling multiple package identifier channels in a transport stream utilizing a single generic key packet. The single generic key packet may comprise scrambling keys for each of the multiple package identifier channels, and may comprise scrambling keys for time intervals corresponding to two or more successive key change points. A key change point may be enabled to occur at the same time instant for each of the multiple package identifier channels, or may be enabled to occur at different time instants for one or more of the multiple package identifier channels. The scrambling/descrambling may comprise copy protection or conditional access descrambling. The generic key change packet may comprise information identifying a scrambling/descrambling algorithm, such as AES, DES and 3-DES, for example.

Provided is a route guidance apparatus and a route guidance method which are capable of appropriately performing route guidance on a road where a plurality of lanes exist on one side. The route guidance apparatus 12 or the route guidance method determines the timing of the automated or manual lane change based on the total required distance Dlcttl corresponding to the number of required lane changes Nlcn required for reaching the target lane 502tar from the current lane 502cur, and the remaining distance to the planned course change point Prc from the current position Pcur. When the timing of the lane change is reached, the timing of the automated lane change or the manual lane change is guided, or the automated lane change is performed.

The invention discloses a multifunctional tilt table device used for testing the interfacial shear strength characteristics of a geotechnical synthetic material. The multifunctional tilt table device comprises a testing stand, an inclined plane control mechanism, a shearing box unit, a vertical loading mechanism and a measurement and control system, wherein the inclined plane control mechanism drives a tilted plate of the testing stand through a motor so as to allow the tilted plate to rotate to any inclination angle and can fix the tilted plate at a certain inclination angle through hydraulic jacks, shearing boxes are placed on concave guide rails on the surface of the tilted plate, a geotechnical synthetic material sample is installed between upper and lower shearing boxes, multiple layers of inclined shearing interfaces are formed through rotation of the tilted plate, the vertical loading mechanism comprises two loading devices used for short-term and long-term characteristic testing of the interfaces, the measurement and control system composed of a sensor, a control and acquisition system and a computer carries out real-time monitoring on stress and displacement of the upper and lower shearing boxes and the sample, determines a critical interface instability inclination angle according to displacement and pull-up curve abrupt change points and calculates shear strength of each interface according to stress analysis. The multifunctional tilt table device can be used for short-term and long-term characteristic testing of a single layer or multiple layers of interfaces.

A lane marker recognition method comprises the steps of inputting an image including a lane marker, extracting luminance change points in the image, and estimating the position of the lane marker using the extracted edge points. The edge extracting step includes calculating an angle of orientation of each of the edges and the lane marker position estimating step includes extracting edge points that are oriented toward a vanishing point of a road, from among the edge points extracted in the edge extracting step.

The invention relates to an examining method examining the flaw of empty bottle nozzle and the device thereof, which is in particular suitable for the imperial crown beer bottle. The invention is characterized in that the method comprises the following steps: the bottle nozzle is given a photograph along the axis shaft line direction of the empty bottle to be examined to grasp the image of the bottle nozzle, the gradation abrupt change point in the image straight line territory is scanned, the decision of the weighting of coordinate array is judged and calculated, the ring fitting of the least square method is taken on the point obtained in the above steps, and the returned peripheral core coordinate and semi diameter is obtained. The circle parameter and radius parameter of the localization target area center is determined, and the target area is locked and given image preprocessing; and then whether the judgment requirement is met or not can be determined. The determining method provided by the invention can be easily utilized in inspecting equipment. And the high speed and high recognition rate automation examination to the empty bottle nozzle is thus realized. The invention has the advantages that the structure is simple, and the bottle with flaw can be correctly and automatically and efficiently rejected.

Embodiments of the present invention relate to a system and method for discovering correlations among data. Embodiments of the present invention comprise detecting change points in time-series data streams, defining change point properties based on the change points, grouping together two time-series data streams that have a similar change point property, calculating a behavior index for the two time-series data streams, and assigning the two time-series data streams to a server taking into account the behavior index.

A compact high-resolution imaging lens which provides a wide field of view of 80 degrees or more and corrects various aberrations properly. Designed for a solid-state image sensor, the imaging lens includes constituent lenses arranged in the following order from an object side to an image side: a first positive (refractive power) lens having a convex object-side surface; a second negative lens having a concave image-side surface; a third positive lens as a double-sided aspheric lens having a convex object-side surface; a fourth positive lens having a convex image-side surface; a fifth lens as a double-sided aspheric lens having a concave image-side surface; and a sixth negative lens having a concave image-side surface. The image-side surface of the sixth lens has an aspheric shape with a pole-change point in a position off an optical axis.

The invention discloses a business index monitoring method and device, and the method comprises the steps: employing a formula for the statistical analysis of the historical monitoring sample data ofa to-be-monitored business index, automatically predicting the upper and lower limit threshold values of to-be-monitored data of the to-be-monitored business index, and determining whether the to-be-monitored data is abnormal data or not based on the predicted upper and lower limit threshold values; or employing a change point detection mode, and recognizing the abnormal data in to-be-monitored time sequence data of the to-be-monitored business index. Because there is no need of a manual mode for the setting of the fixed year-on-year and chain relative ratios, the method can avoid the false alarm and alarm leakage on the basis that the monitoring cost is reduced and the monitoring range is enlarged, and improves the monitoring sensitivity and accuracy of the business monitoring index.

Systems and methods are described herein for detecting an anomaly in a discrete signal, where samples in the signal correspond to amounts of data flow in a network within a time interval. The discrete signal is received, and a sequence of likelihoods corresponding to the sample values in the signal is generated. The likelihoods are based at least in part on a historical probability distribution of previously received sample values, and a likelihood is a probability of occurrence of a corresponding sample value in the signal. Likelihood change points are identified in the likelihood sequence, and the discrete signal is segmented into a plurality of segments at samples corresponding to the identified change points. A segment is identified as an anomaly based on a comparison between a statistic of the segment and a statistic of the historical probability distribution.

The invention discloses an aero-engine remaining life prediction method based on multi-stage information fusion. The method comprises the steps that multi-source monitoring parameter denoising processing and feature extraction are conducted; stable analysis is conducted on multi-source monitoring time sequences, sudden change points of all parameter monitoring time sequences are calculated and parameter degeneration proportions at the positions of the sudden change points are calculated; multi-stage division is conducted on multi-source parameters, a regression fusion model is established, sample training is conducted by using historical monitoring data and parameters, in multiple stages, of the fusion model are obtained; according to monitoring data in a training set, the multi-source monitoring parameters are fused and a health indicator HI is obtained; by using the Kalman filtering algorithm, best fit is conducted on an engine in the whole process that the performance fails from being complete, and the error of a prediction model is minimized; according to real-time monitoring data in a test set, the multi-source monitoring parameters are fused and a health indicator HI is obtained; time-varying parameters of the prediction model are estimated in real time by using the Kalman filtering algorithm; the prediction model is determined, the time mechanism is introduced and the failure time of the engine is estimated in real time.

The invention discloses a phase change cold storage material with double phase change points and a preparation method thereof. The phase change cold storage material with double phase change points is prepared from the following raw materials in percentage by weight: 0 to 60 percent of inorganic salts, 5 to 60 percent of organic phase change materials, 20 to 95 percent of de-ionized water, 0.1 to 2 percent of surfactants, 1 to 5 percent of thickening agents and 1 to 5 percent of nucleating agents. The phase change cold storage material provided by the invention has double phase change points; the temperature can be controlled between the double phase change point temperatures in the material distribution process; the freezing and cold storage effect is achieved; the proper unfreezing effect can also be achieved; in addition, the material has high phrase change latent heat enthalpy value (greater than 220kJ/kg); the more efficient and faster temperature reduction effect is achieved; in addition, the temperature can be permanently maintained in a specific temperature range.

There is provided a route optimization method in a mobile Internet Protocol (IP) system using a mobile Internet Protocol. When a mobile host (MH) moves over the Internet and is assigned to a care-of-address (CoA) corresponding to a changed point of attachment to the Internet, it sends a registration request message containing the care-of address to a home agent (HA) via a foreign agent (FA). The home agent stores the care-of address in relation to a domain name of the mobile host in an internal domain name server database. Upon receipt of a query about the mobile host by domain name from a correspondent node (CN), the home agent sends the care-of address corresponding to the domain name of the mobile host together with caching prevention information to the correspondent node. The caching prevention information is set to prevent the correspondent node or another domain name server from caching the care-of address of the mobile host. The correspondent node communicates with the mobile host using the care-of address.

A lighting device includes a substrate, a LED element, and a lens. A light exit surface of the lens includes a first light exit surface and a second light exit surface. A curve obtained by cutting the light exit surface by a plane including the optical axis has, on a boundary between the first light exit surface and the second light exit surface, a change point at which a rate of inclination decreases discontinuously. An angle between the optical axis and a line segment connecting the change point and a light emission center of the LED element is approximately equal to an emission angle with the highest light intensity, among emission angles, when light rays emitted from the light exit surface are sorted by respective emission angles.

Provides a diagnostic apparatus for diagnosing a measured object based on time-series data of a plurality of parameters measured from the measured object. An example of an apparatus includes a change-point score calculating portion for calculating a time-series change-point score with which each of the plurality of parameters changes according to passage of time based on the time-series data on the parameter, a change-point correlation calculating portion for calculating a change-point correlation indicating strength by which each of the plurality of parameters is associated with each of other parameters based on the change-point scores of the parameter and the other parameter, and a parameter outputting portion for outputting a set of parameters of which calculated degrees of associations are higher than a predetermined reference change-point correlation as a set of mutually strongly associated parameters.