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https://github.com/wuthefwasthat/pychurch
A probabilistic programming language, based on Church
https://github.com/wuthefwasthat/pychurch
Last synced: 4 days ago
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A probabilistic programming language, based on Church
- Host: GitHub
- URL: https://github.com/wuthefwasthat/pychurch
- Owner: WuTheFWasThat
- Created: 2012-02-27T20:50:37.000Z (over 12 years ago)
- Default Branch: master
- Last Pushed: 2017-10-11T05:27:09.000Z (about 7 years ago)
- Last Synced: 2024-04-10T02:17:57.031Z (7 months ago)
- Language: OpenEdge ABL
- Homepage:
- Size: 25.8 MB
- Stars: 16
- Watchers: 4
- Forks: 5
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
#### NOTE: This project is defunct.
#### If you're interested, please check out these more recent projects:
- [Web PPL](http://webppl.org/)
- [Venture](http://probcomp.csail.mit.edu/venture/)
# PyChurch
[Read paper for details](papers/MEng%20thesis.pdf)
## RUNNING LOCALLY
To run a shell:
`python run_program.py [-e ENGINE]`
To run a program:
`python run_program.py [-e ENGINE] [-p PROGRAM]`
Flags:
```
ENGINE: r = randomdb, t = traces, rt = reduced traces
PROGRAM: The directory of some Church program.
```
## RUN A SERVER
All servers conform to a common REST API.
To run the python server:
`python server.py [-e ENGINE] [-v] [-p PORT]`
To run a C server:
`python server.py [-s BINARY] [-v] [-p PORT]`
Flags:
```
ENGINE: r = randomdb, t = traces, rt = reduced traces
BINARY: The directory of some C binary
PORT: The number of some port
The -v flag toggles whether the server should print its activity
```
## SETUP ON EC2
See [ec2_setup.txt](src/ec2_setup.txt)
## COMPILING THE C BINARIES
You can also compile a faster version of the server by doing the following:
1. (OPTIONAL) Open `socket_server.py`, and change engine_type to what you'd like.
2. Install pypy.
3. Run (replace the path to the pypy folder as appropriate):
```python /Applications/pypy/rpython/bin/rpython socket_server.py```
For a tracing JIT version (NOT YET READY):
```python /Applications/pypy/rpython/bin/rpython --opt=jit socket_server.py```
WARNING: This can take a long time.
4. This should create a binary called `socket_server-c`. You may want to rename it
## DEFINING CUSTOM XRPs
See [values.py](src/engine/values.py) for class definition
See [xrp.py](src/engine/xrp.py) for examples
Remember to set self.sample, depending on whether your XRP is a sampler or rescorer!
## ADDING PRIMITIVE PROCEDURES
See [directives.py](src/engine/directives.py) for examples. (Search for "PRIMITIVE PROCEDURES".)
The syntax for expressions can be found near the bottom of [expressions.py](src/engine/expressions.py) (or you can simply follow the examples).
Don't forget the 3rd argument must be set to 'True'.
## KNOWN ISSUES
- Propagation should use a priority queue (it is currently wrong, sometimes)
- Traces could be more intelligent at propagating up through arguments (and then, we can use the proper XRP if)
- Some Jenkins tests fail
- Outermost observe shouldn't be required
- Assumes resampling XRPs are all deterministic
- Needs to use unsample