https://github.com/jgontrum/multilevel-coarse-to-fine-parsing
Implementation of Charniak et al.'s 'Multilevel Coarse-to-fine PCFG Parsing' for the Syntactic Parsing class at Uppsala University.
https://github.com/jgontrum/multilevel-coarse-to-fine-parsing
Last synced: about 1 month ago
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Implementation of Charniak et al.'s 'Multilevel Coarse-to-fine PCFG Parsing' for the Syntactic Parsing class at Uppsala University.
- Host: GitHub
- URL: https://github.com/jgontrum/multilevel-coarse-to-fine-parsing
- Owner: jgontrum
- License: mpl-2.0
- Created: 2018-03-13T09:12:12.000Z (about 7 years ago)
- Default Branch: master
- Last Pushed: 2018-03-25T21:43:34.000Z (about 7 years ago)
- Last Synced: 2025-01-27T08:13:42.736Z (3 months ago)
- Language: Python
- Size: 838 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Multilevel Coarse-to-fine Parsing
## A pruning algorithm for PCFGs
Implementation of Charniak et al.'s 'Multilevel Coarse-to-fine PCFG Parsing'
for the Syntactic Parsing class at Uppsala University.
### Requirements
- Python 3.6
- If you have Anaconda installed, please set the environment variable
`PYTHON3` to the original python3.6 executable on your system.
- make
- A PCFG in CNF (or use the one in `data/grammar.pcfg`)
### Installation
Execute `make`.
### Usage
Execute `env/bin/ctfparser`. It reads from stdin and writes the best tree
for each input to stdout.
```bash
usage: ctfparser [-h] [--grammar GRAMMAR] [--ctfmapping CTFMAPPING]
[--threshold THRESHOLD] [--enable_logs]
optional arguments:
-h, --help show this help message and exit
--grammar GRAMMAR Path to the grammar to be used. (default:
data/grammar.pcfg)
--ctfmapping CTFMAPPING
Path to the coarse-to-fine symbol mapping file.
(default: data/ctf_mapping.yml)
--threshold THRESHOLD
Threshold for coarse-to-fine parsing. (default:
0.0001)
--enable_logs Enable logging to stdout and file. (default: False)
```