Enable ce for sequence_tagging_for_ner 

Fix paddle import in text_cls

fix error in language model

Enable model ce for text_classification

Update .run_ce.sh

Remove paddle.v2 as paddle to support CE

set skip num to 0

* Seq2seq CE: do not skip the first 2 passes

language_model_for_ce

Continuous Evaluation for object detection

Added CE py file

Seq2seq ce