Abstract: Described is a navigation system. The navigation system comprises a route planning module and a route guidance module. The route planning module is configured to receive a request from a user for guidance to a particular destination. Based on a starting point, the route planning module determines a route from the starting point to the particular destination. The route guidance module is configured to receive the route, and based on the route and current location of the user, provide location-specific instructions to the user. The location-specific instructions include reference to specific visible objects within the vicinity of the user.

Abstract: The present invention relates to techniques for contextual filtering for improving an output of a speech recognizer. The techniques comprise receiving a representation of a speech utterance into a shallow parser component in the form of a first word lattice including a set of potential language matches for the utterance, where the language matches include at least one word; the parser component operative for receiving and analyzing the first word lattice to produce a second word lattice, and including a filter that assigns a probability match for a potential word match in relation to another potential word match in the utterance based on a particular filter-specific criteria; and outputting the probability matches from the shallow parser component as a portion of a second word lattice for further processing to determine most likely combinations of words present in the speech utterance.