2. The method of claim 1 , wherein constructing a statistical classifier comprises applying smoothing to parameters θ ky and θ ky , which comprises calculating an interpolation weight λ for each class y based on sentence count #.
2. The method of claim 1 , wherein constructing a statistical classifier comprises applying smoothing to parameters θ ky and θ ky , which comprises calculating an interpolation weight λ for each class y based on sentence count #. 3. The method of claim 2 , wherein applying smoothing comprises determining a weight α based on line search.