System and method for rule based content filtering

H - Electricity – 04 – L

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H04L 29/02 (2006.01) G06F 17/00 (2006.01) H04L 12/16 (2006.01)

Patent

CA 2703107

A system and method for content-filtering of data containers in a network supporting versatile communications services are disclosed. The content-filtering system is integrated with a content-adaptation system. Several server units handle data 5containers formulated at source according to different protocols. A content filtering process relies on characterizing each component of a container to produce a set of content descriptors and producing a set of binary conditions for each component according to a preset criterion for each descriptor. A set of rules is devised where each rule applies a respective Boolean expression to a subset of the conditions to prescribe a lOrespective content-editing action. Methods of specifying and evaluating a rule's Boolean expression are disclosed. A formal graph is used to define inter-dependence of rules.

L'invention porte sur un système et un procédé de filtrage de contenu de conteneurs de données dans un réseau supportant des services de communications polyvalents. Le système de filtrage de contenu est intégré à un système d'adaptation de contenu. Plusieurs unités de serveur manipulent des conteneurs de données formulés au niveau d'une source selon différents protocoles. Un processus de filtrage de contenu s'appuie sur une caractérisation de chaque composant d'un conteneur pour produire un ensemble de descripteurs de contenu et la production d'un ensemble de conditions binaires pour chaque composant selon un critère prédéfini pour chaque descripteur. Un ensemble de règles est conçu dans lequel chaque règle applique une expression booléenne respective à un sous-ensemble des conditions pour prescrire une action d'édition de contenu respective. Des procédés de spécification et d'évaluation d'une expression booléenne de règle sont décrits. Un graphe formel est utilisé pour définir une interdépendance de règles.

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