ASR:2015-01-12

Speech Processing

AM development

Environment

• May gpu760 of grid-14 be something wrong. To be exchanged.
• grid-2 can not be booted
• grid-10 should replac the CPU fan.

Sparse DNN

• details at http://liuc.cslt.org/pages/sparse.html

RNN AM

• Trying toolkit of Microsoft.(+)
• details at http://liuc.cslt.org/pages/rnnam.html

Dropout & Maxout & retifier

• Drop out

• MaxOut && P-norm(+)

• Need to solve the too small learning-rate problem
  • Add one normalization layer after the pnorm-layer
  • Add L2-norm upper bound
• hold

Convolutive network

• Convolutive network(DAE)

• http://cslt.riit.tsinghua.edu.cn/cgi-bin/cvss/cvss_request.pl?account=zhangzy&step=view_request&cvssid=311

• Feature extractor
  • Combined with raw features, better performance obsearved.
  • Technical report to draft, Yiye Lin, Shi Yin, Menyuan Zhao and Mian Wang(+)
• To test real enviroment echo.(+)

DNN-DAE(Deep Atuo-Encode-DNN)

• Technical report to draft, Mengyuan Zhao and Zhiyong Zhang.
• To test real enviroment echo.
• http://cslt.riit.tsinghua.edu.cn/cgi-bin/cvss/cvss_request.pl?account=zhangzy&step=view_request&cvssid=318
• XueWei will reproduce the experiments.

RNN-DAE(Deep based Atuo-Encode- RNN)

• http://cslt.riit.tsinghua.edu.cn/cgi-bin/cvss/cvss_request.pl?account=zhangzy&step=view_request&cvssid=261

VAD

• Harmonics and Teager energy features done.
• Frame energy Model training done.
• Other features model to be train.

Speech rate training

• http://cslt.riit.tsinghua.edu.cn/cgi-bin/cvss/cvss_request.pl?account=zhangzy&step=view_request&cvssid=268
• Technical report to draft. Shi Yin

Confidence

• Reproduce the experiments on fisher dataset.
• Use the fisher DNN model to decode all-wsj dataset
• preparing scoring for puqiang data
• HOLD

Neural network visulization

• http://cslt.riit.tsinghua.edu.cn/cgi-bin/cvss/cvss_request.pl?account=zhangzy&step=view_request&cvssid=324

Speaker ID

• DNN-based sid
• http://cslt.riit.tsinghua.edu.cn/cgi-bin/cvss/cvss_request.pl?account=zhangzy&step=view_request&cvssid=327

Language ID

• GMM-based language is ready.
• Delivered to Jietong
• Prepare the test-case
• http://cslt.riit.tsinghua.edu.cn/cgi-bin/cvss/cvss_request.pl?account=zhangzy&step=view_request&cvssid=328

Voice Conversion

• Yiye is reading materials
• HOLD

Text Processing

LM development

Domain specific LM

• LM2.1

• mix the sougou2T-lm,kn-discount continue
• train a large lm using 25w-dict.(hanzhenglong/wxx)

• data pre-processing("this week")

• new dict.

• dongxu help zhenglong with large dictionary.

tag LM

• Tag Lm

• tag Probability should test add the weight(hanzhenglong) and handover to hanzhenglong ("this month")

• paper

• paper submit this week.

• similar word extension in FST

• find similarity word using word2vec,word vector is training.
• set the weight for word

RNN LM

• rnn

• test wer RNNLM on Chinese data from jietong-data
• generate the ngram model from rnnlm and test the ppl with different size txt.

• lstm+rnn

• check the lstm-rnnlm code about how to Initialize and update learning rate.(hold)

Word2Vector

W2V based doc classification

• data prepare.

Knowledge vector

• Knowledge vector

• Make a proper test set.
• Modify the object function and training process.

Character to word

• Character to word conversion(hold)

Translation

• v5.0 demo released

• cut the dict and use new segment-tool

QA

improve fuzzy match

• add Synonyms similarity using MERT-4 method(hold)

improve lucene search

• add more feature to improve search.

• POS, NER ,tf ,idf ..

context framework

• code for organization

query normalization

• using NER to normalize the word

• new inter will install SEMPRE