Concept search and semantic annotation for mobile messaging

1. A textual message processing system for use in a mobile environment, the system comprising:

a user messaging application for processing at least one user textual message during a user messaging session;

a semantic annotation module for:

a. identifying one or more semantically salient terms in the user textual message, and

b. annotating the user textual message with annotation terms having a low semantic distance to the semantically salient terms;

a user message history for storing the annotated textual messages; and

a message search module for using one or more keywords to search the user message history including the annotation terms, and identifying as a search match any annotated textual messages within a semantic distance threshold of the one or more keywords.

2. A system according to claim 1 , wherein the semantic annotation module further annotates the user textual message with situational meta-data characterizing the user textual message.

3. A system according to claim 2 , wherein the situational meta-data includes at least one of time data, location data, activity data, and user-specific terms associated with the user textual message.

4. A system according to claim 1 , further comprising: a user interface for presenting the search match textual messages to a user with the annotation terms.

5. A system according to claim 4 , wherein the user interface uses a text-to-speech arrangement for presenting the search match textual messages to the user.

6. A system according to claim 1 , wherein the message search module obtains the keywords based on a hands-free, eyes-free user interface.

7. A system according to claim 1 , wherein the user textual message includes instant messaging text.

8. A system according to claim 1 , wherein the user textual message includes automatic speech recognition text dictated via automatic speech recognition.

9. A system according to claim 8 , further comprising: a speech recognition language model adapted to the annotated textual messages in the user message history.

10. A method of processing textual messages in a mobile environment, the method comprising:

processing a user textual message during a user messaging session;

identifying semantically salient terms in the user textual message;

annotating the user textual message with annotation terms having a low semantic distance to the semantically salient terms;

adding the annotated textual message to a user message history;

using one or more keywords to search the user message history including the annotation terms and identifying as a search match any annotated textual messages within a semantic distance threshold of the one or more keywords.

11. A method according to claim 10 , further comprising: further annotating the user textual message with situational meta-data characterizing the user textual message.

12. A method according to claim 11 , wherein the situational meta-data includes at least one of time data, location data, activity data, and user-specific terms associated with the user textual message.

13. A method according to claim 10 , further comprising:

presenting the search match textual messages to a user with the annotation terms.

14. A method according to claim 13 , wherein a text-to-speech arrangement is used for presenting the search match textual messages to the user.

15. A method according to claim 10 , wherein the keywords are obtained based on a hands-free, eyes-free user interface.

16. A method according to claim 10 , wherein the user textual message includes instant messaging text.

17. A method according to claim 10 , wherein the user textual message includes automatic speech recognition text dictated via automatic speech recognition.

18. A method according to claim 17 , further comprising: adapting a speech recognition language model to the annotated textual messages in the user message history.