452 results about "Method comparison" patented technology

A system and method are provided that can detect any part of a multipath impulse radio signal. More specifically, the method compares a template pulse train and the multipath impulse radio signal to obtain a comparison result. The system performs a threshold check on the comparison result. If the comparison result passes the threshold check, the system locks onto any part of the multipath impulse radio signal including a direct path part and at least one multipath reflection part. The system may also perform a quick check, a sychronization check, and / or a command check of the multipath impulse radio signal.

A method to extract new keywords based on word frequency and multiple grammars is provided, which belongs to the technology field of a natural language processing, and is characterized by extracting the potential models of part of speech of the multiple grammars of the keywords by researching characteristic part of speech of the keywords and adopting computer to assist excavation and taking the models as the basis of the keywords to extract arithmetic. When extracting the new keywords, firstly excavating the multiple phrases in text in accordance with the potential models of part of speech and extract candidate word set of the keywords, and then excavating potential keywords not loading from titles and add the potential keywords to the candidate keyword set. The application brings forward an improved single text word frequency / inverse text frequency value (tf / idf) format, introduces target-oriented characteristics, grades the candidate keywords, obtains the order of the candidate keywords and gives the keywords of news document after optimizing the results. Compared with the traditional keyword extraction method based on single text word frequency / inverse text frequency value (tf / idf), the method has higher recall rate under the condition of the same precision.

Methods and systems in a wireless receiver for enabling the reception of input signals at varied power levels in the presence of co-channel interference utilizing combinations of space-time adaptive processing (STAP), interference cancellation multi-user detection (MUD), and combined STAP / MUD techniques. In MUD, code, timing, and possibly channel information of multiple users are jointly used to better detect each individual user. The novel combination of adaptive signal reconstruction techniques with interference cancellation MUD techniques provides accurate temporal cancellation of interference with minimal interference residuals. Additional methods and systems extend adaptive signal reconstruction techniques to take Doppler spread into account. STAP techniques permit a wireless receiver to exploit multiple antenna elements to form beams in the direction of the desired signal and nulls in the direction of the interfering signals. The combined STAP-MUD methods and systems increase the probability of successful user detection by taking advantage of the benefits of each reception method. An additional method and system utilizes STAP techniques in the case where no pilot signal is available. This method compares the outputs of various hypothesized STAP solutions.

In a data processing system, a method of recommending articles and products to a user is disclosed. The method creates a frequency vector in relation to the content of an article, frequency vectors in relation each of one or more products from intermediate data. The method compares the vectors to determine a content similarity measure, and provides as output a list of one or more products having the highest content similarity measures. The method may also determine a correlation measure. An electronic data processing system for recommending articles and products to a user is also disclosed. The system includes modules to receive article information and product information, a correlation module to determine a content similarity measure between the article and each of the products and, a multiplexer module for providing a list comprising the article and the products associated having the highest content similarity measure.

Apparatus, methods, and computer program products are disclosed for using gestures to authenticate a principal. The method acquires a multi-pattern authentication gesture that has multiple input patterns. The multiple input patterns have a temporal dimension. At least two of the multiple input patterns overlap in the temporal dimension. The multi-pattern authentication gesture also has a duration. The method compares whether the multi-pattern authentication gesture is sufficiently similar to an available gesture template over a portion of the duration and assigns a level-of-trust to the principal responsive to the comparison. The apparatus and program products use the method.

A method selects antennas in an OFDMA network. A channel state of a downlink is measured using a downlink subframe received in a mobile station from a base station. A channel state of an uplink is measured using an uplink subframe received in the base station from the mobile station. Next, the method compares the channel states to determine whether the downlink and the uplink are reciprocal or not. The mobile station can perform receive antenna selection based on the quality of the downlink channel state. The mobile station can also perform transmit antenna selection when instructed by the base station.

The invention provides a large-scale multifunctional corrosion stimulation test rack taking a test circular road as a main part, which is used for simulating the corrosion condition of high acid natural gas containing H2S, CO2 and Cl on a pipeline parent metal and a welded joint under the pipeline transmission condition. The device and the method provided by the invention can be applied to pipeline parent bodies with different pipe diameters, materials, steel grades and wall thicknesses, or a welded joint corrosion test; and test functions such as test on corrosion of the pipe section parent metal and the welded joint, sulfide stress cracking (SSC), hydrogen induced cracking (HIC), washout, corrosion inhibitor effect, welding process evaluation, corrosion monitoring method comparison, pipeline-corrosion-preventing process optimization and the like are integrated into a whole; and the test functions, such as preference of the corrosion process in the pipeline are integrated into a whole, thus reasonable material selection and safe welding quality are guaranteed, and the corrosion condition of the corresponding corrosion condition on the welded joint and the parent metal is known.

The invention relates to a method for identifying facial expressions from a human face image sequence, belonging to the technical field of analyzing and identifying human facial expressions. The method of the invention comprises the following steps of: firstly, adopting a method for tracing feature points, sequentially extracting the displacement amount of the normalized facial key point and the length of the special geometrical characteristic for each frame image of the expression image sequence, and combining the data to form a characteristic column vector; secondly, sequentially arranging all characteristic column vectors of the sequence to form a characteristic matrix, wherein each characteristic matrix represents a facial expression image sequence; finally, comparing the similarities among the characteristic matrixes by using a canonical correlation analysis method, thereby determining the human face images to be identified into one of the basic expressions of happiness, sadness, fear, hate, surprise and anger. In the invention, the canonical correlation analysis method is successfully applied to identifying the human facial expressions, the dynamic information in the expression generation course is utilized effectively and the higher recognition rate and the shorter CPU computation time are acquired.

A method for routing Fibre Channel frames in a Fibre Channel system is provided. The method compares a cost associated with a pre-programmed preferred route when the pre-programmed preferred route has been pre-programmed to route Fibre Channel frames between a source Fibre Channel port and a destination Fibre Channel port; with a cost of at least one route for routing Fibre channel frames between the source Fibre Channel port and the destination port determined by using a standard Fibre Channel Fabric Shortest Path First (FSPF) protocol, and using the pre-programmed-preferred route to route Fibre Channel frames if the cost associated with the pre-programmed preferred route is lower than the cost associated with the at least one route determined by the standard Fibre Channel FSPF protocol.

An apparatus for determining a current position of a mobile device in an environment in which at least one transmitter is disposed includes a means for providing a cartographic map of the environment, the cartographic map including field strength reference values at reference points, a means for determining a field strength value, a means for deriving a reference point within reach that can be reached starting from a previous position of the mobile device by movement of the mobile device in the environment within a predetermined time interval, from the cartographic map of the environment, and a comparator for comparing the field strength value with a field strength reference value at the reference point within reach in order to determine the current position. By including the cartographic map of the environment, the position determination is simplified.

The present invention provides methods for enhanced detection of biological response patterns. In one embodiment of the invention, genes are grouped into basis genesets according to the co-regulation of their expression. Expression of individual genes within a geneset is indicated with a single gene expression value for the geneset by a projection process. The expression values of genesets, rather than the expression of individual genes, are then used as the basis for comparison and detection of biological response with greatly enhanced sensitivity. In another embodiment of the invention, biological responses are grouped according to the similarity of their biological profile.The methods of the invention have many useful applications, particularly in the fields of drug development and discovery. For example, the methods of the invention may be used to compare biological responses with greatly enhanced sensitivity. The biological responses that may be compared according to these methods include responses to single perturbations, such as a biological response to a mutation or temperature change, as well as graded perturbations such as titration with a particular drug. The methods are also useful to identify cellular constituents, particularly genes, associated with a particular type of biological response. Further, the methods may also be used to identify perturbations, such as novel drugs or mutations, which effect one or more particular genesets. The methods may still further be used to remove experimental artifacts in biological response data.

A method and system of inspecting advertising contents of a keyword advertisement is provided. The method includes: crawling a Universal Resource Locator (URL) registered by an advertiser and extracting a URL keyword related to an advertisement site of the advertiser; extracting a target keyword from a plurality of advertisement information being registered in relation to the URL; and determining further inspection-required advertisement information through keyword comparison between the extracted URL keyword and the target keyword, the further inspection-required advertisement information having low relevance to the advertisement site.

The invention discloses a real-time information safety service method and system for supporting dynamic interaction, and provides a system capable of supporting an information safety service provider and an information safety service receiver to carry out dynamic safety service in the process of remote real-time interaction and a method thereof. During the remote real-time interaction, if more difficult information safety problems are confronted, multiple information safety experts are required to participate in by a web, thus carrying out collaborative diagnosis and offering safety proposalsin an online mode so as to finally finish the safety service. Compared with an original manual safety service method and an information technology (IT) service method, the service method provided by the invention has the advantage of preferable instantaneity and interactivity, and is used to quickly solve the information safety service problems which are confronted by organizations and save huge costs. The service method provided by the invention is simple and practical and can be applied to the safety service for large, medium and small information systems and organizations.

The invention is a multi-register fingerprint identification method belonging to fingerprint identification technology. its character lies in: it carries detail comparison to M fingerprints of the same finger in the databank, works out its similarity, and a excellent parameter is worked out according to the similarity, selects the maximal one as basic fingerprint, and it is copied onto the template; the other fingerprint is compared with its detail points, amends the confidence value of detail point according to the times of success comparisons, and a integral template is acquired; then carries tactics integration and finally integration matching with traditional detail joint character, acquires the similarity between the registered fingerprint and applied fingerprint. Compared with pure detail joint method, it reduces the error refusing rate.

Described is a computer-implemented system and method that detects and differentiates scratch-out gestures from other electronic ink, e.g., entered via a pen. The system and method compare boundary-based criteria to differentiate, which eliminates the need to have a specially-shaped scratch-out pattern, instead allowing a wide variety of scratch-out styles to be detected. Criteria includes boundary-based evaluations such as whether the potential scratch-out gesture intersects previously recognized words or characters, whether the scratch-out gesture has a width that is at least a threshold percentage of the width of a word or character bounding box, whether the electronic ink extends beyond the midpoint of the bounding box, and whether at least some portion of the scratch-out gesture is above a baseline of the word or character. Scratch-out gestures entered in freeform input writing areas and boxed input writing areas are supported.

A data recovery system for a serial digital data link includes a data sampler, compare logic, a phase controller, and a phase shifter. The data sampler samples input data three times in a bit time which time is determined by clock pulses generated by the phase shifter, and recovers digital data according to a predetermined decision criterion. Data sampling phases are split so as to track the data eye. The compare logic compares the output of the data sampler according to a predetermined method. Phase controller uses the output of the compare logic and generates phase control signals. These signals are set so as to control the sampling times of the data sampler and to attain near optimally recovered data stream. The phase shifter uses the phase control signals and makes three different phase clocks from input clock. The input clock can be an external clock, or can be recovered from the external clock or input data stream.

A concealment method for a lost frame in decoding a video sequence which was compressed with block motion compensation and transform coefficient quantization compares high-frequency content of co-located macroblocks of frames immediately preceding and following a lost frame to decide whether a scene change has occurred and what concealment approach to pursue.

A collaborative filtering recommendation method for integrating preference relationship and trust relationship includes the following steps: digging preference relationship between users according to a project grading datum of users and building a preference relationship network; integrating preference relationship and trust relationship and building a preference and trust relationship network; positioning similar neighbors of a target user in the Markov random walk method and on the basis of the preference and trust relationship network; and forecasting grading values of corresponding projects for the target user on the basis of the grading value of the similar neighbors on a certain project. By adopting the method, a recommendation system can forecast grades of the projects made by the users efficiently in a novel mode. Compared with the prior art, the collaborative filtering recommendation method has the advantages of being simple, easy to achieve and capable of generating accurate grading forecasting values; and being convenient to select due to the fact that the method has only one parameter and recommended results are insensitive to the parameter.

The invention discloses a comprehensive evaluation method for environmental air quality. The comprehensive evaluation method mainly comprises the following steps: calculating ratios (pollution indexes) of the concentrations of various pollutants to corresponding first-grade concentration limit values in an environmental air quality standard, and with ratios of the pollution indexes to a sum of the pollution indexes as a weight, amplifying a sum of products of the pollution indexes and the weight by 100 times to obtain a new air quality index (NAQI for short). A calculation method the NAQI is as follows: formulas are as shown in the specification. According to the method, in consideration of the comprehensive influence of various pollutants, based on a first-grade air quality standard, the air quality is evaluated according to the dynamic weight. Compared with the prior art, the method is more scientific and accurate, and is simpler and more convenient to calculate.

Methods and systems in a wireless receiver for enabling the reception of input signals at varied power levels in the presence of co-channel interference utilizing combinations of space-time adaptive processing (STAP), interference cancellation multi-user detection (MUD), and combined STAP / MUD techniques. In MUD, code, timing, and possibly channel information of multiple users are jointly used to better detect each individual user. The novel combination of adaptive signal reconstruction techniques with interference cancellation MUD techniques provides accurate temporal cancellation of interference with minimal interference residuals. Additional methods and systems extend adaptive signal reconstruction techniques to take Doppler spread into account. STAP techniques permit a wireless receiver to exploit multiple antenna elements to form beams in the direction of the desired signal and nulls in the direction of the interfering signals. The combined STAP-MUD methods and systems increase the probability of successful user detection by taking advantage of the benefits of each reception method. An additional method and system utilizes STAP techniques in the case where no pilot signal is available. This method compares the outputs of various hypothesized STAP solutions.

The invention provides a method for testing the dynamic performance of an optical fiber gyro, which comprises the following steps: (1) carrying out dynamic performance test for the optical fiber gyro by using the frequency method, and recording the output signal of the gyro; (2) evaluating a discrete gyro theoretic output value according to an actual sampling time interval dt acquired periodically; and (3) analyzing the test result. The method, as a breakthrough research in the aspect of the dynamic performance of the optical fiber gyro, can visually reflect the dynamic performance of the optical fiber gyro, and analyze the dynamic performance of the optical fiber gyro in an all-around manner (under different frequencies and amplitudes) with reliable conclusions. The method is suitable for comparing the dynamic performances of a plurality of optical fiber gyros, so that proper optical fiber gyros can be selected according to specific working conditions.

The invention discloses a control method for automatic weighting of metal powder, which has the advantages that the rotation speed of a feeding and driving motor is controlled by an improved proportion pulse width speed adjusting and control method, thus when the actual weight value of the metal powder in a weighting hopper is small, the rotation speed of the feeding and driving motor is high, and the feeding speed of the feeding and driving motor to the weighting hopper is high; when the actual weight value approaches to a target value; the rotation speed of the feeding and driving motor is low, and the feeding speed of the feeding and driving motor to the weighting hopper is low; the speed change of the feeding and driving motor is continuous, and the efficiency and the precision for feeding are both considered; a single microcomputer control system is adopted for the control system, so that the control method is relatively simple, and the cost is simultaneously reduced; in addition, as the feeding direction and the gravity direction of a screw feed mechanism arranged in a material storage hopper are consistent, the self gravity action of the metal powder is utilized while feeding, the uniformity and the stability for feeding are improved, and the system for achieving the whole control method is relatively simple.

The invention provides an implementation method for a self-starting and stopping control system of a machine set, and the method is characterized by comprising the following steps: firstly, receiving starting signals or stopping signals through the function set which is positioned at a first layer; then, sequentially judging whether the permissive conditions of the starting are met or not or the permissive conditions of the stopping are met or not, whether initialization signals exist or not, whether interruption signals exist and whether feedback signals exist; and then, starting to implement a breakpoint layer which is positioned at a second layer, wherein the implementation command of the second layer is the same as that of the first layer. Compared with the existing method, the methodprovided by the invention has the following advantages: 1, the dependence on the driving stage of equipment can be greatly reduced, and the debugging efficiency is enhanced; 2, the modification flexibility of a function set is increased; and 3, the implementation method provided by the invention is also suitable for a commissioning machine set.

The invention discloses a LDPC code linear programming decoding method based on a minimum polyhedral model and mainly solves low decoding speed in conventional LDPC code linear programming decoding and an erroneous platform in information transmission decoding. The method comprises steps of: slacking the maximum likelihood decoding of a LDPC code into a linear programming LP model based on a minimum polyhedron by using a verification node decomposition method; establishing an augmented Lagrange function by using the sparsity and the orthogonality of a matrix in the LP model based on the minimum polyhedron, and carrying out iteration by using an alternating direction method of multipliers (ADMM) to solve decoded codes. Compared with a LP decoding method based on the ADMM, the LDPC code linear programming decoding method is increased in decoding speed while not decreasing LP decoding performance, and does not generate an erroneous platform in a high signal-to-noise ratio compared with a belief propagation (BP) decoding method. The LDPC code linear programming decoding method can be used in the technical field of communication to increase the efficiency of a communication system decoding module.

The invention provides a system and a method for evaluating the building hot and humid environment levels. Different evaluating methods can be selected according to different building cold and heat source types; the system and the method are applicable to artificial cold and heat source buildings and non-artificial cold and heat source buildings; the building hot and humid environment levels and the building indoor comfortable temperature range can be objectively obtained; the indoor hot comfortable environment can be favorably and effectively improved; and the building energy consumption is reduced. The building hot and humid environment levels in different regions, different seasons, different buildings and different environments can be judged, and the evaluating method is more comprehensive.

A system and method identifies different versions of the same document in a document collection. The system and method creates multiple candidate identifiers for each document based on information associated with the document, and processes the candidate identifiers according to language specific rules. The system and method compares the processed candidate identifiers for similarity, and identifies different versions of documents based on the similarity.

The invention discloses a server network behavior description method. The method comprises the steps that (1) traffic information in and out of a server is acquired; (2) according to traffic attributes, the traffic information is extracted, and according to a time window, traffic corresponding to each traffic attribute is counted to form historical data; (3) the historical data are calculated to acquire system parameters based on the traffic structure stability; (4) a dynamic normal traffic contour is built; (5) the current traffic structure is constructed; and (6) a difference measurement method is used to compare the normal traffic contour and the current traffic structure, and whether a network is normal is judged according to the size of a difference value. According to the invention, the server network behavior description method can adapt to an increasingly complex network environment, can detect a part of new network attacks, and can take initiative in detection.

The invention relates to the software version consistency detection technology and provides a software version consistency detection system. The system comprises a server, a client side and an information transmission module, wherein the server is used for receiving data transmitted by the client side, carrying out text comparison and check value comparison and then displaying results; the client side is used for calculating and sending a file check value of to-be-detected software and a configuration file to the server; and the information transmission module is used for intercommunication between the server and the client side. According to the software version consistency detection system and the detection method thereof, the safety risk problem caused by inconsistency of a software test version and an online deployment version can be solved; and in combination with two comparison modes of text comparison and check value comparison, the complete and effective consistency identification can be carried out on a software source version.

The invention relates to the technical field of ship engineering, and discloses an obtaining method of an intersecting line of a double-beveled plane of a hull and a cylindrical cylinder body. According to the method of the invention, a horizontal cross-sectional view and a longitudinal cross-sectional view of cut intersection of the cylindrical cylinder body and the double-beveled plane on the hull are utilized, and rib lines of the hull are projected onto the double-beveled plane, an auxiliary line intersected with the rib lines on the double-beveled plane are made, the intersecting line ellipse of the cylindrical cylinder body and the double-beveled plane is obtained through utilizing a three-plane projection relationship between the horizontal cross-sectional view and the longitudinal cross-sectional view, and the intersecting line ellipse of the cylindrical cylinder body is obtained. The invention also provides the cylinder body manufactured by adopting the method to obtain the intersecting line. The method provided by the invention is convenient in operation, and improves the speed and the precision of cut intersection of the cylindrical cylinder body and the double-beveled plane and the production efficiency as compared with traditional unfolding methods.