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srvk / eesen

The official repository of the Eesen project
http://arxiv.org/abs/1507.08240
Apache License 2.0
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LatticeFasterDecoder failed with "link_extra_cost == link_extra_cost" #214

Closed feihwu closed 5 years ago

feihwu commented 5 years ago

Hello everyone - I successfully decode a prob output from accoustic model using lattice_faster_decoder.decode().

now I want to simulate the online decoding - I split the prob output into several chunks, each chunk has 50 frames.

For each chunk, I call the function lattice_faster_decoder.advanceDecoding() ( I changed the target_frames_decoded to ensure it is correct; and called lattice_faster_decoder.InitDecoding() once at the very beginning)

then in the processing the 2nd chunk, I get the error "failed: link_extra_cost == link_extra_cost". which means the link_extra_cost is NaN in PruneForwardLinks(...). any hints why this happen?

Thanks.

feihwu commented 5 years ago

figure out why - this NaN is caused by invalid index into the decodable->LogLikelihood(...).