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78 results about "Search analytics" patented technology

Search analytics is the use of search data to investigate particular interactions among Web searchers, the search engine, or the content during searching episodes. The resulting analysis and aggregation of search engine statistics can be used in search engine marketing (SEM) and search engine optimization (SEO). In other words, search analytics helps website owners understand and improve their performance on search engines, for example identifying highly valuable site visitors, or understanding user intent. Search analytics includes search volume trends and analysis, reverse searching (entering websites to see their keywords), keyword monitoring, search result and advertisement history, advertisement spending statistics, website comparisons, affiliate marketing statistics, multivariate ad testing, et al.

Method for searching and analyzing abnormality of signals during vibration and process of steam turbine set

The invention belongs to the technical field of vibration monitor and control of steam turbine sets, in particular relates to a method for searching and analyzing the abnormality of signals during vibration and process of a steam turbine set. The method comprises the following steps of forming time sequences by history data with the preset group number; dividing each group of the time sequences into time subsequences, calculating mode characteristic values of the time subsequences and executing normalization processing; forming a mode characteristic value aggregation by the processed mode characteristic values; extracting a maximum value of all mode characteristics from the mode characteristic value aggregation and ranging in order from the largest to the smallest to form a mode characteristic extreme value sequence; gaining an abnormal characteristic boundary of the mode characteristic extreme value sequence; determining abnormal time subsequences; storing the abnormal time subsequences over the abnormal characteristic boundary in an abnormal change sequence; and executing optimal regression analysis on the abnormal change sequence based on coefficients of determination, and finding out a matched early warning grade according to an early warning mechanism rule. The invention increases the early warning precision and depth of vibration and process parameters.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Machining Condition Estimating Apparatus and Machining Condition Estimating Method

A machining condition estimating apparatus, for estimating a long life-time machining condition, by suppressing boundary wears, from among plural numbers of choices of machining conditions, without building up database, comprise: a means for defining an analysis model presenting shapes of a tool and a cutting material, to be a target of analysis, and various kinds of machining condition parameters relating to relative positions between the tool and the cutting material; a means for setting up an initial value for use of analysis and change volume of the machining condition parameter as analysis parameters; a means for conducting geometric calculation of contact length, over which the tool and the cutting material of the model contact with, for each analysis parameter; a means for producing a distribution waveform, plotting the contact length “Lci” for each position “γi” of a point on each blade edge calculated, on “γi”−“Lci” coordinates, thereby to calculate a ratio of movement length of a boundary portion with respect to the maximum contact length (boundary movement rate) and a ratio of width, over which a tool blade contacts with the cutting material (contact rate); a means for searching the analysis parameter, with which the boundary movement rate or the contact rate comes to maximum, respectively; and a means for outputting a long life-time machining condition selected from the analysis parameters searched.
Owner:HITACHI METALS LTD

A method for multi-directional search of dynamic system state probability mapping matrix

ActiveCN109492256AConform to dynamic processThe meaning of simulation fits the realityDesign optimisation/simulationComplex mathematical operationsSearch analyticsDiscretization
A method for multi-direction search of dynamic system state probability mapping matrix include the following: establishing the model of system simulation and fault injection, performing the discretization of system state space, randomly sampling a system originate grid element point, configuring system component status, setting simulation time step length and simulation test times, importing system originating grid element point information into simulation model through function assignment, executing and completing simulation test, counting system trajectory migration distribution in grid element, calculating system state conditional migration probability, generating system state transition probability matrix, and establishing system dynamic probability mapping network; initializing the search parameters, carrying out matrix dynamic search analysis, realize the path identification and search of the important risk sequence, calculate and predict the probability distribution of the system reliability with time. The invention can be used for generating system dynamic trajectory and state transition probability matrix, supporting matrix multi-direction searching calculation and obtaining dynamic reliability evaluation index.
Owner:SOUTH CHINA UNIV OF TECH

Method, for analyzing power system power oscillation disturbance source, based on SCADA (supervisory control and data acquisition) historical data search

The invention relates to a method, for analyzing power system power oscillation disturbance source, based on SCADA (supervisory control and data acquisition) historical data search. The method includes the steps of firstly, calling a time sequence database interface of an EMS (enhanced message system) to obtain historical data of an active value of power equipment in a time period in batches, and placing the data in a cache according to a set structure and allowing the same to wait for queuing calculation; secondly, queuing calling, calling an oscillation feature iterative function of historical data in each queue for iterative processing, inputting new data on the basis of a previous state, calculating feature quantity of active oscillating of one grid equipment, comparing with a preset fixed value, and returning equipment state; thirdly, if equipment measurement oscillation occurs, generating and returning oscillation records; and fourthly, sorting and positioning an oscillating source, sorting collected records according to oscillation starting time, and positioning the first equipment as the oscillating source. By the method, data accuracy is improved, convenience and practicality are achieved, and credibility of real-time positioning result information of the oscillating source is high.
Owner:CHINA SOUTHERN POWER GRID COMPANY
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