Patent ID: 8086443
Filing Date: 2011-12-27
Classification: G10L

Abstract:
1. A program storage device readable by a computer, tangibly embodying a program of instructions executable by the computer to perform a method for sequence tagging medical patient records, the method comprising the steps of: providing a labeled corpus D={X initializing generative parameters θ and discriminative parameters {tilde over (θ)}, wherein θ={p(x finding parameters θ,{tilde over (θ)} that maximize a functional LL−C×Penalty, wherein LL is a log-likelihood function  wherein  is a prior wherein σ is a tradeoff parameter that balances contributions of the generative parameters and discriminative parameters,  and p(X  wherein  with α  with β  where  are emission probability constraints for state y and  are transition probability constraints for state, and C is a constant, wherein parameters θ,{tilde over (θ)} are the probabilities that a new sentence X′ is labeled as Y′.