Add LayoutLMv3 (#17060)

* Make forward pass work

* More improvements

* Remove unused imports

* Remove timm dependency

* Improve loss calculation of token classifier

* Fix most tests

* Add docs

* Add model integration test

* Make all tests pass

* Add LayoutLMv3FeatureExtractor

* Improve integration test + make fixup

* Add example script

* Fix style

* Add LayoutLMv3Processor

* Fix style

* Add option to add visual labels

* Make more tokenizer tests pass

* Fix more tests

* Make more tests pass

* Fix bug and improve docs

* Fix import of processors

* Improve docstrings

* Fix toctree and improve docs

* Fix auto tokenizer

* Move tests to model folder

* Move tests to model folder

* change default behavior add_prefix_space

* add prefix space for fast

* add_prefix_spcae set to True for Fast

* no space before `unique_no_split` token

* add test to hightligh special treatment of added tokens

* fix `test_batch_encode_dynamic_overflowing` by building a long enough example

* fix `test_full_tokenizer` with add_prefix_token

* Fix tokenizer integration test

* Make the code more readable

* Add tests for LayoutLMv3Processor

* Fix style

* Add model to README and update init

* Apply suggestions from code review

* Replace asserts by value errors

* Add suggestion by @ducviet00

* Add model to doc tests

* Simplify script

* Improve README

* a step ahead to fix

* Update pair_input_test

* Make all tokenizer tests pass - phew

* Make style

* Add LayoutLMv3 to CI job

* Fix auto mapping

* Fix CI job name

* Make all processor tests pass

* Make tests of LayoutLMv2 and LayoutXLM consistent

* Add copied from statements to fast tokenizer

* Add copied from statements to slow tokenizer

* Remove add_visual_labels attribute

* Fix tests

* Add link to notebooks

* Improve docs of LayoutLMv3Processor

* Fix reference to section

Co-authored-by: SaulLu <lucilesaul.com@gmail.com>
Co-authored-by: Niels Rogge <nielsrogge@Nielss-MacBook-Pro.local>

.circleci/config.yml

@@ -890,7 +890,7 @@ jobs:
             - run: make deps_table_check_updated
             - run: python utils/tests_fetcher.py --sanity_check
 
-    run_tests_layoutlmv2:
+    run_tests_layoutlmv2_and_v3:
         working_directory: ~/transformers
         docker:
             - image: circleci/python:3.7
@@ -921,7 +921,7 @@ jobs:
                   path: ~/transformers/test_preparation.txt
             - run: |
                   if [ -f test_list.txt ]; then
-                    python -m pytest -n 1 tests/models/*layoutlmv2* --dist=loadfile -s --make-reports=tests_layoutlmv2 --durations=100
+                    python -m pytest -n 1 tests/models/*layoutlmv* --dist=loadfile -s --make-reports=tests_layoutlmv2_and_v3 --durations=100
                   fi
             - store_artifacts:
                   path: ~/transformers/tests_output.txt
@@ -982,7 +982,7 @@ workflows:
             - run_tests_pipelines_tf
             - run_tests_onnxruntime
             - run_tests_hub
-            - run_tests_layoutlmv2
+            - run_tests_layoutlmv2_and_v3
     nightly:
         triggers:
             - schedule: