The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8402263 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 19, 2013

Filed:

Mar. 31, 2011
Applicants:

Wei Sun, Cambridge, MA (US);

Shantanu Rane, Cambridge, MA (US);

Inventors:

Wei Sun, Cambridge, MA (US);

Shantanu Rane, Cambridge, MA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

A most likely sequence of states corresponding to an observation sequence stored at a client is determined securely with respect to a HMM stored at a server. An encryption of a log-probability of the current element of the observation sequence is determined for each state of the HMM. A product of an encryption of the log-probability of the state for the current element, an encryption of a transition probability to the state, and the encryption of a log-probability of the current element of the observation sequence is determined iteratively, for each state of the HMM, to produce an encrypted matrix of indexes of the states; and the encrypted matrix is transmitted to the client.


Find Patent Forward Citations

Sun, Wei. (2013). Privacy-preserving probabilistic inference based on hidden markov models (U.S. Patent No. 8402263). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8402263

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