Abstract:
In an embodiment, a local version of a file is found in response to detecting an access of a remote version of the file. In response to the detecting, a determination is made whether the remote version meets a rule, and if the rule is met, then the local version is updated with the remote version of the file if the remote version is valid. The rule may be customized for the file. In various embodiments, the determination includes determining whether the remote version of the file was created more recently than the local version, whether the remote version has a level that is greater than the level of the local version, or whether the remote version is stored at a source location specified by the rule. In various embodiments, the level may be an audio or video quality of the file or an update identifier of the file. In this way, out-of date local versions of files may be updated with newer or better remote versions of files.
Abstract:
To avoid the problem of category assignment in artificial neural networks (ANNs) based upon a mapping of the input space (like ROI and KNN algorithms), the present method uses “probabilities”. Now patterns memorized as prototypes do not represent categories any longer but the “probabilities” to belong to categories. Thus, after having memorized the most representative patterns in a first step of the learning phase, the second step consists of an evaluation of these probabilities. To that end, several counters are associated with each prototype and are used to evaluate the response frequency and accuracy for each neuron of the ANN. These counters are dynamically incremented during this second step using distances evaluation (between the input vectors and the prototypes) and error criteria (for example the differences between the desired responses and the response given by the ANN). At the end of the learning phase, a function of the contents of these counters allows an evaluation of these probabilities for each neuron to belong to predetermined categories. During the recognition phase, the probabilities associated with the neurons selected by the algorithm permit the characterization of new input vectors and more generally any kind of input (images, signals, sets of data) to detect and classify anomalies. The method allows a significant reduction in the number of neurons that are required in the ANN while improving its overall response accuracy.