Computes forward decoding in a linear-chain CRF.
crf_decode_forward(inputs, state, transition_params, sequence_lengths)
| inputs | A [batch_size, num_tags] matrix of unary potentials. |
|---|---|
| state | A [batch_size, num_tags] matrix containing the previous step's score values. |
| transition_params | A [num_tags, num_tags] matrix of binary potentials. |
| sequence_lengths | A [batch_size] vector of true sequence lengths. |
backpointers: A [batch_size, num_tags] matrix of backpointers. new_state: A [batch_size, num_tags] matrix of new score values.