* Added new result for NER
* Update named_entity_recognition.md
* Add new results to Aspect extraction
* new results for PTB
* Update dependency_parsing.md
* Add new datasets: Semantic Dependency Parsing
* Update semantic_parsing.md
* Update semantic_parsing.md
* add new results of PTB
* Update dependency_parsing.md
* Update dependency_parsing.md
* Add new results to chunking
* Adding new datasets in chunking
* Add conll chunking datasets
* Add new results in social media
* Add new results in PTB
* Add new results to chunking
* add new results to chunking
* add new results to chunking
* add new results to chunking
* Update shallow_syntax.md
* Update shallow_syntax.md
* Add new results and codes to chunking
* Add results of a existing dataset
* Add results for social media
Co-authored-by: Sebastian Ruder <ruder.sebastian@gmail.com>