Reverse mapping method and apparatus for form filling

1. A method comprising the steps of:

a client maintaining a cache of form fill mapping data that it receives from a site profile server, the form fill mapping data created using reverse auto-profiling based on form submissions by a plurality of users;

said client maintaining an index that contains a record for each domain for which said site profile server has form fill mapping data, wherein said index includes one or more index version identifiers;

said client periodically polling said site profile server to identify one or more differences between the one or more index version identifiers at said client and one or more most recent index version identifiers at said site profile server;

said client using said one or more differences to update said client's local index; and

removing form fill mapping data for a domain stored in said cache, if it was present, when said differences indicate that a mapping for said domain has changed.

2. The method of claim 1 , further comprising the steps of:

while said client is used for browsing, said client checking to see if it has cached form fill mapping data for each domain it visits;

if said client navigates to a domain for which it has cached form fill mapping data, said client operating under an assumption that form fill mapping data that it has for said domain is the most current available, and said client proceeding to use said form fill mapping data to recognize one or more forms of the domain and to offer to fill one or more fields of the one or more forms; and

if said client navigates to a domain for which it does not have cached form fill mapping data, said client requesting form fill mapping data for said domain from said site profile server, and said client storing said form fill mapping data in said cache when said data are received.

3. The method of claim 1 , wherein the form fill mapping data comprises one or more mapping data entries for one or more corresponding domains, each mapping data entry including one or more mappings between one or more form field names for the corresponding domain and one or more corresponding data classes.

4. The method of claim 1 , wherein the reverse auto-profiling based on form submissions by the plurality of users comprises a consensus determination for the plurality of users based on a Bayesian analysis.

5. The method of claim 1 , wherein the reverse auto-profiling based on form submissions by the plurality of users comprises reverse auto-correcting based on the form submissions.

6. A client apparatus comprising:

one or more processors;

a client-based cache of form fill mapping data that said client apparatus receives from a site profile server, the form fill mapping data created using reverse auto-profiling based on form submissions by a plurality of users;

an index maintained at said client apparatus of a record for each domain for which said site profile server has form fill mapping data, wherein said index includes one or more index version identifiers;

a mechanism at said client apparatus for periodically polling said site profile server to identify one or more differences between the one or more index version identifiers at said client apparatus and one or more most recent index version identifiers at said site profile server;

a module at said client apparatus for using said one or more differences to update said client apparatus's local index; and

a module for removing form fill mapping data for a domain stored in said cache, if it was present, when said differences indicate that a mapping for said domain has changed.

7. The apparatus of claim 6 , wherein:

while said client apparatus is used for browsing, said client apparatus is configured to check to see if it has cached form fill mapping data for each domain it visits;

if said client apparatus navigates to a domain for which it has cached form fill mapping data, said client apparatus is configured to operate under an assumption that form fill mapping data that it has for said domain is the most current available, and said client apparatus is configured to proceed to use said form fill mapping data to recognize one or more forms of the domain and to offer to fill one or more fields of the one or more forms; and

if said client apparatus navigates to a domain for which it does not have cached form fill mapping data, said client apparatus is configured to request form fill mapping data for said domain from said site profile server, and said client is configured to store said form fill mapping data in said cache when said data are received.

8. The apparatus of claim 6 , wherein the form fill mapping data comprises one or more mapping data entries for one or more corresponding domains, each mapping data entry including one or more mappings between one or more form field names for the corresponding domain and one or more corresponding data classes.

9. The apparatus of claim 6 , wherein reverse auto-profiling based on form submissions by the plurality of users comprises a consensus determination for the plurality of users based on a Bayesian analysis.

10. The apparatus of claim 6 , wherein the reverse auto-profiling based on form submissions by the plurality of users comprises reverse auto-correcting based on the form submissions.

11. A non-transitory computer-readable media comprising computer-executable instructions that, when executed by one or more processors of a computer system, cause the computer system to:

maintain a cache of form fill mapping data that the computer system receives from a site profile server, the form fill mapping data created using reverse auto-profiling based on form submissions by a plurality of users;

maintain a local index that contains a record for each domain for which said site profile server has form fill mapping data, wherein said local index includes one or more index version identifiers;

periodically poll said site profile server to identify one or more differences between the one or more index version identifiers at the computer system and one or more most recent index version identifiers at said site profile server;

use said one or more differences to update said local index; and

remove form fill mapping data for a domain stored in said cache, if it was present, when said differences indicate that a mapping for said domain has changed.

12. The non-transitory computer-readable media of claim 11 , further comprising computer-executable instructions that, when executed by the one or more processors of said computer system, cause the computer system to:

while said computer system is used for browsing, check to see if it has cached form fill mapping data for each domain it visits;

if said computer system navigates to a domain for which it has cached form fill mapping data, operate under an assumption that form fill mapping data that it has for said domain is the most current available, proceed to use said form fill mapping data to recognize one or more forms of the domain and to offer to fill one or more fields of the one or more forms; and

if said computer system navigates to a domain for which it does not have cached form fill mapping data, request form fill mapping data for said domain from said site profile server, and store said form fill mapping data in said cache when said data are received.

13. The non-transitory computer-readable media of claim 11 , wherein the form fill mapping data comprises one or more mapping data entries for one or more corresponding domains, each mapping data entry including one or more mappings between one or more form field names for the corresponding domain and one or more corresponding data classes.

14. The non-transitory computer-readable media of claim 11 , wherein the reverse auto-profiling based on form submissions by the plurality of users comprises a consensus determination for the plurality of users based on a Bayesian analysis.

15. The non-transitory computer-readable media of claim 11 , wherein the reverse auto-profiling based on form submissions by the plurality of users comprises reverse auto-correcting based on the form submissions.