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204 results about "Risk detection" patented technology

Detection risk is the chance that an auditor will fail to find material misstatements that exist in an entity's financial statements. These misstatements may be due to either fraud or error.

Method and apparatus for evaluating fraud risk in an electronic commerce transaction

According to one aspect, transaction information is received and applied to multiple fraud risk mathematical models that each produce a respective raw score, which are transformed with respective sigmoidal transform functions to produce optimized likelihood of fraud risk estimates to provide to a merchant. In one embodiment, the respective fraud risk estimates are combined using fusion proportions that are associated with the respective risk estimates, producing a single point risk estimate, which is transformed with a sigmoidal function to produce an optimized single point risk estimate for the transaction. The sigmoidal functions are derived to approximate a relationship between risk estimates produced by fraud risk detection models and a percentage of transactions associated with respective risk estimates, where the relationship is represented in terms of real-world distributions of fraudulent transaction and non-fraudulent transaction. One embodiment is directed to computing respective risk test penalties for multiple risk tests in one or more of the multiple fraud risk mathematical models used to estimate the likelihood of fraud, given a certain pattern of events represented by the transaction information, wherein the respective risk test penalties are computed as the inverse of the sum of one and a false positive ratio for the respective risk test.
Owner:CYBERSOURCE CORP

Real-time active detecting and passive monitoring integrated system and method for hidden disasters of mine

The invention discloses a real-time active detecting and passive monitoring integrated system and method for hidden disasters of a mine, and belongs to hidden disaster monitoring systems and methods for mines. The system mainly comprises electrodes, electrode treatment controllers, an electrical prospecting apparatus main unit/communication substation, a ring network and a monitoring center. The system performs electrical prospecting active detection regularly, one electrode treatment controller is taken as source emission current through the corresponding electrode, an active electric field is formed in coal and rock mass, the other electrode treatment controllers receive active voltage signals synchronously through the corresponding electrodes, and active emission is performed sequentially one by one; passive potential signal monitoring of the coal and rock mass is performed at other time. An evolutionary process of the hidden disasters of the mine is reflected through coupling of results obtained through active electrical prospecting detection and passive potential monitoring, and meanwhile, real-time risk detection and evaluation of a dynamic disaster region and real-time fusion early-warning of risks before disasters are realized. The system and the method can reflect the evolution information of an internal structure of the coal and rock mass in real time more comprehensively, the anti-interference capability is high, and the early warning accuracy is high.
Owner:CHINA UNIV OF MINING & TECH

Safety risk detecting method and device for Android application program

The invention provides a safety risk detecting method and device for an Android application program and relates to the technical field of Android application detecting. The method comprises the steps that decompiling is carried out on the Android application program to be detected to obtain a program source file, and the program source file is analyzed and processed to obtain application programming interface call information of the Android application program to be detected; according to the application programming interface call information of the Android application program to be detected, operating authorization information of operation needing to be carried out on a terminal by the Android application program to be detected is obtained; according to the operating authorization information, a hierarchical structure is set up; first weight sets of all criterion items in a criterion layer relative to a target layer are determined, and second weight sets of all subsidiary criterion items in a subsidiary criterion layer relative to the criterion items which the subsidiary criterion items belong to are determined; fuzzy relation matrixes corresponding to all the criterion items are determined; according to the first weight sets, the second weight sets and the fuzzy relation matrixes, safety risk grades are determined. The method can solve the problem that a risk detecting mode of a current application program is not accurate.
Owner:CHINA ACADEMY OF INFORMATION & COMM

Risk test method and risk test device for power gird dispatching operation

The invention provides a risk test method for power gird dispatching operation. The risk test method for the power gird dispatching operation comprises the steps: receiving a current operation command conducted to target equipment and confirming risk state information; obtaining the number of nodes which are beyond a voltage boundary, overload number of branches, actual voltage amplitude value of each node which is beyond the voltage boundary and actual transmitting power of each overload branch under the states of failed operation, successful operation and successful operation development; obtaining load reduction quantity after failure and load reduction quantity under successful operation; obtaining real-time probabilities when operation succeeds and fails; obtaining real-time probability of failure after operation fails and real-time failure probability of the target equipment when operation succeeds; obtaining a risk indicator of the current operation; and sending an alarm out when the risk indicator is larger than or equal to a preset value. The invention further provides a risk test device for the power gird dispatching operation. The risk test device for the power gird dispatching operation is capable of pre-testing security status of a power gird caused by the power gird dispatching operation and guaranteeing the safe operation of an electrical power system.
Owner:POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD +1

Failure risk rate calculation method and device based on dam failure function models

The invention provides a failure risk rate calculation method and device based on dam failure function models, and relates to the technical field of dam safety risk detection. The method comprises thesteps that basic variable training samples of a plurality of groups of dams are acquired; the dam failure function models are reconstructed by using a kriging model, and a correlation function is generated, wherein the correlation function is used for describing spatial correlation among all the basic variable training samples affecting the safety of the dams, and the correlation function comprises a to-be-optimized parameter; an optimization value of the to-be-optimized parameter is determined according to the maximum likelihood estimation method; according to the optimization value of the to-be-optimized parameter, the value of the correlation function is determined, and the dam failure function models corresponding to the basic variable training samples are determined according to a random process function condition; validity check is conducted on the dam failure function models corresponding to each group of basic variable training samples, and the optimal dam failure function model is selected; the dam failure risk rate is determined according to the optimal dam failure function model.
Owner:STATE GRID CORP OF CHINA +2

Intelligent terminal App permission privacy risk monitoring and evaluation system and method

The invention discloses an intelligent terminal App permission privacy risk monitoring and evaluation system and method. Aiming to solve the problem of privacy disclosure of a user caused by user permission abuse in the application process of an existing intelligent terminal App and solve the technical problems of large data acquisition amount, high calculation complexity, high implementation difficulty, easy misjudgment and the like in the prior art, the invention provides an intelligent terminal App permission privacy risk detection and evaluation method and a privacy disclosure blocking system, being characterized by collecting an App permission list and related information; calculating permission analysis of an App to be detected, an App of the same kind, an App of the same function and an App of the same developer and privacy information sensitivity of related permissions, so as to provide the privacy disclosure risk evaluation method for the intelligent terminal App permission, and providing an unloading prompt for blocking high-risk App permission or App according to permission privacy disclosure risk grading, so that efficient, convenient and accurate intelligent terminal App permission privacy disclosure risk evaluation and blocking are realized, and the privacy of a user is protected.
Owner:GUIZHOU UNIVERSITY OF FINANCE AND ECONOMICS
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