* add -linear-schedule-with-warmup

* update lr scheduler usage in run_glue

* add import info

* add other 5 scheduler with warmup

* add copyright, update usage in run_glue

* simplify argument, make warmup arg support float and int

* Add some LambdaDecay scheduler with warmup, update usage in run_glue

* update classname and unify two cosine decays into one

* update usage in run_glue

* fix typo

* update WarmUp to Warmup, and update class name about Const, and update doc, and usage

* update usage of decay class

* update usage of decay class

* update docs

* update codes

* update docs

* update codes

* update codes

* update codes

* add method tokenizer.get_special_tokens_mask()

* fix checkpoints problem.

add an optional boolean argument pad_rght to Pad class to support padding direction selection

fix docs for visualdl

* move coupletdataset to paddlenlp.dataset

* move coupletdataset to paddlenlp.dataset

* add doc for coupletdataset copyright, fix other api's sample code

* move coupletdataset to paddlenlp.dataset

* move coupletdataset to paddlenlp.dataset

* update docs

* add imdb dataset

* update codes

export text classification model in static graph 

fix crf bug in paddlenlp

add gpt2 model for the paddlenlp

* update docs

* support AMP training

add peoplesner, fix msraner (#5183)

* add pure fp16 training.

* Add lookup_table in custom_black_list during the pure fp16 training.

* support pad seq and bsz multi

* alter vocab size

* alter md5sum

* root for reader

* add static predict

* rm position_encoding_init

* fix static predict

* add the xpu support the the paddlenlp

* add the support xpu for the ernie and bert
Co-authored-by: Nwawltor <fanzeyang0904@hotmail.com>

* upgrade MapDatasetWrapper

* minor fix

* refine code

* new chunk_eval

* np first

* add embedding example in embeddings.md

* add embedding.md link in toke_embedding readme

* fix windows url bug

* add more English embedding name

* fix doc bug

* delete useless description

* add comments of TokenEmbedding

* add embedding model info

* fix readme and change cross-entropy api

* change api back

* update codes

* update codes

* update codes

* update docs

* update docs

* update docs

* update docs

* update codes

* update codes

* update codes

* update docs

* update docs

fix url bug for word2vec

* add the benchmark glue for some task

* fix the qnil result for the bert benchmark

* change the from the logger to framework logger

fix bugs;add more baidu embedding name

* fix bleu bug

* fix bleu bug

* fix doc example

* minor fix

* fix squad dataset bug

* fix readme

* fix delimiter

* fix bleu bug

* update __init__

* update couplet api usage, delete useless import

* update seq2seq readme

* update seq2seq readme path