Natural language parsers
| Parser | Description |
|---|---|
| Apple Pie Parser | A bottom-up probabilistic chart parser for English |
| ENGCG | Constraint Grammar Parser for English demo by LingSoft |
| Link Grammar Parser | Link Grammar Parser is free for commercial use |
| MINIPAR | A broad-coverage dependency parser for English by Dekang Lin |
| Irish National Centre for Language Technology Parsers | Probabilistic Context-Free Parser & Probabilistic LFG F-Structure Parser |
| Stanford Parsers | Java implementations of probabilistic parsers: highly optimized PCFG, dependency, and lexicalized PCFG parsers |
| Enju | An implementation of a parsing algorithm for probabilistic unification-based grammars with a wide-coverage probabilistic HPSG grammar |
| StatCCG | A statistical parser for Combinatory Categorial Grammar. |
| C&C CCG parser | Another statistical parser for CCG. |
| RASP | Robust Accurate Statistical Parser |
| Machinese Syntax | Demo of a commercial parser based on Functional Dependency Grammar |
| OpenCCG | An open source CCG library. |
| XTAG | A parser based on Tree Adjoining Grammar |
| Charniak | Charniak's wide-coverage probabilistic parser |
| Evalb | A bracket scoring program that reports precision, recall, F-measure, non crossing and tagging accuracy for given parses. |
Dependency treebanks and tools
| Treebank/tool | Description |
|---|---|
| TIGER Treebank | A german treebank, Annotate tool, TIGER-XML format |
| TIGER API | Java interface for TIGER-XML |
| Prague Dependency Treebank | The Prague Dependency Treebank of Czech |
| Alpino | Dependency Treebank of Dutch |
| TUT | The Turin University Treebank of Italian |
| PARC 700 | The PARC 700 Dependency Bank of English |
| Danish Dependency Treebank | DTD treebank and DTAG annotation tool |
| Dependency Treebank for Russian | A Russian treebank |
| METU-Sabanci Turkish Treebank | A Turkish dependency treebank |
| Slovene Dependency Treebank | The Slovene Dependency Treebank |
| Floresta Sintá(c)tica | The The Floresta Sintá(c)tica Treebank of Portuguese |
Grammars and linguistic theories
| Theory/grammar | Description |
|---|---|
| Dependency Grammar | Formal & Computational Aspects of DG by G.J. Kruijff |
| Extensible Dependency Grammar | XDG homepage |
| Lexical Functional Grammar | LFG page of the Stanford University |
| Lexical Functional Grammar | LFG page of the University of Essex |
| Head-Driven Phrase Structure grammar | HPSG page of the Stanford University |
| Head-Driven Phrase Structure Grammar | HPSG page of the Ohio State University |
| Combinatory Categorial Grammars | An introcution to CCGs |
| The Combinatory Categorial Grammar site | A CCG page |
Organizations and services
| Name | Description |
|---|---|
| Linguist List | Mailing list on linguistics, computational linguistics and related fields |
| Association for Computational Linguistics | THE society for computational linguistics | Nordic Treebank Network | Organization promoting treebank research in the Nordic countries | I4D People | I4D People is a company that pioneers ground-breaking technologies that empower the customers to function innovatively in their knowledge-based activities | Editorial Service | Roger Loveday, an experienced manuscript editor |
Automatic essay assessment
| System | Description |
|---|---|
| Betsy | A grading system using Bayesian networks |
| E-rater | Criterion E-rater Online Essay Evaluation Service demo |
| IEA | The Intelligent Essay Assessor |