POS tags, NER types and dependency labels in VnCoreNLP

Brief description of POS tags, NER types and dependency labels in VnCoreNLP

TagsetDescription.md

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+## POS tags, NER types and dependency labels in VnCoreNLP
+
+The following sections are to briefly describe  [POS tags](https://github.com/vncorenlp/VnCoreNLP/blob/master/VLSP2013_POS_tagset.pdf), [NER types](http://vlsp.org.vn/vlsp2016/eval/ner) and [dependency labels](https://github.com/vncorenlp/VnCoreNLP/blob/master/VnDT-treebank-description.pdf) used in VnCoreNLP. See details in [Link-to-POS-tag-description](https://github.com/vncorenlp/VnCoreNLP/blob/master/VLSP2013_POS_tagset.pdf), [Link-to-NER-type-description](http://vlsp.org.vn/vlsp2016/eval/ner) and [Link-to-dependency-label-description](https://github.com/vncorenlp/VnCoreNLP/blob/master/VnDT-treebank-description.pdf).  
+
+### POS tags
+
+|Label| Meaning  |
+|---|---|
+| Np | Proper noun |
+| Nc | Classifier noun | 
+| Nu | Unit noun | 
+| N | Noun | 
+| Ny | Abbreviated noun | 
+| Nb | (Foreign) borrowed noun|
+| V | Verb| 
+|Vb |(Foreign) borrowed verb|
+|A| Adjective|
+|P| Pronoun|
+|R |Adverb|
+|L| Determiner|
+|M |Numeral/Quantity|
+|E |Preposition|
+|C |Subordinating conjunction|
+|Cc |Coordinating conjunction|
+|I |Interjection/Exclamation|
+|T |Particle/Auxiliary, modal words|
+|Y |Abbreviation|
+|Z |Bound morpheme|
+|X |Un-definition/Other|
+|CH |Punctuation and symbols|
+
+### NER types
+
+|Label| Meaning  |
+|---|---|
+| PER | Names of persons |
+| LOC | Names of locations | 
+| ORG| Names of organizations| 
+| MISC|Names of miscellaneous entities|
+
+### Top 21 most frequent dependency labels
+
+These following labels has an appearance rate of at least 0.2%:
+
+|Label| Meaning  |
+|---|---|
+|adv|Adverbial | 
+|amod| Adjective modifier |
+|conj| Conjunction |
+|coord| Coordination |
+|dep| Default label |
+|det| Determiner |
+|dir| Direction |
+|dob| Direct object |
+|iob| Indirect object |
+|loc| Location |
+|mnr| Manner |
+|nmod| Noun modifier |
+|pmod| Prepositional  modifier |
+|pob| Object of a preposition |
+|prd| Predicate |
+|prp| Purpose |
+|punct| Punctuation |
+|root| Root |
+|sub| Subject |
+|tmp|Temporal|
+|vmod| Verb modifier |