CRFSharp(aka CRF#) is a .NET(C#) implementation of Conditional Random Fields, an machine learning algorithm for learning from labeled sequences of examples. It is widely used in Natural Language Process (NLP) tasks, for example: word breaker, postagging, named entity recognized, query chunking and so on.

CRF#'s mainly algorithm is the same as CRF++ written by Taku Kudo. It encodes model parameters by L-BFGS. Moreover, it has many significant improvement than CRF++, such as totally parallel encoding, optimizing memory usage and so on.

Currently, when training corpus, compared with CRF++, CRF# can make full use of multi-core CPUs and only uses very low memory, and memory grow is very smoothly and slowly while amount of training corpus, tags increase. with multi-threads process, CRF# is more suitable for large data and tags training than CRF++ now. For example, in machine with 64GB, CRF# encodes model with more than 4.5 hundred million features quickly.

Project Samples

Project Activity

See All Activity >

License

BSD License

Follow CRFSharp

CRFSharp Web Site

Other Useful Business Software
Get Avast Free Antivirus | Your top-rated shield against malware and online scams Icon
Get Avast Free Antivirus | Your top-rated shield against malware and online scams

Boost your PC's defense against cyberthreats and web-based scams.

Our antivirus software scans for security and performance issues and helps you to fix them instantly. It also protects you in real time by analyzing unknown files before they reach your desktop PC or laptop — all for free.
Free Download
Rate This Project
Login To Rate This Project

User Reviews

Be the first to post a review of CRFSharp!

Additional Project Details

Operating Systems

Windows

Languages

English, Chinese (Simplified)

Intended Audience

Science/Research, Education, Advanced End Users, Developers, Other Audience, Engineering

User Interface

Console/Terminal, Command-line

Programming Language

C#

Related Categories

C# Information Analysis Software, C# Linguistics Software, C# Machine Learning Software, C# Natural Language Processing (NLP) Tool

Registered

2011-04-04