Abstract: A knowledge-based system and methods to matchmaking and social network extension are disclosed. The system is configured to allow users to specify knowledge profiles, which are collections of concepts that indicate a certain topic or area of interest selected from an. The system utilizes the knowledge model as the semantic space within which to compare similarities in user interests. The knowledge model is hierarchical so that indications of interest in specific concepts automatically imply interest in more general concept. Similarity measures between profiles may then be calculated based on suitable distance formulas within this space.

Abstract: A knowledge-based system and methods to matchmaking and social network extension are disclosed. The system is configured to allow users to specify knowledge profiles, which are collections of concepts that indicate a certain topic or area of interest selected from an. The system utilizes the knowledge model as the semantic space within which to compare similarities in user interests. The knowledge model is hierarchical so that indications of interest in specific concepts automatically imply interest in more general concept. Similarity measures between profiles may then be calculated based on suitable distance formulas within this space.

Abstract: A steam generator for household use having a handpiece held by the user. The handpiece is provided with a potentiometer operable by a roller and connected, by a low voltage line incorporated in a steam conduit, to an electronic circuit which controls a motorized electro-valve for adjustment of the flow of steam. A switch mounted in series with the potentiometer, also carried by the handpiece, enables the steam flow to be interrupted completely.