Download CRFSharp.zip (CRFSharp)

Other Useful Business Software

$300 in Free Credit Towards Top Cloud Services

Build VMs, containers, AI, databases, storage—all in one place.

Start your project in minutes. After credits run out, 20+ products include free monthly usage. Only pay when you're ready to scale.

Get Started

Our Free Plans just got better! | Auth0

With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.

Try free now

Forever Free Full-Stack Observability | Grafana Cloud

Our generous forever free tier includes the full platform, including the AI Assistant, for 3 users with 10k metrics, 50GB logs, and 50GB traces.

Built on open standards like Prometheus and OpenTelemetry, Grafana Cloud includes Kubernetes Monitoring, Application Observability, Incident Response, plus the AI-powered Grafana Assistant. Get started with our generous free tier today.

Create free account

Earn up to 16% annual interest with Nexo.

Access competitive interest rates on your digital assets.

Generate interest, borrow against your crypto, and trade a range of cryptocurrencies — all in one platform. Geographic restrictions, eligibility, and terms apply.

Get started with Nexo.

Compliant and Reliable File Transfers Backed by Top Security Certifications

Cerberus FTP Server delivers SOC 2 Type II certified security and FIPS 140-2 validated encryption.

Stop relying on non-certified, legacy file transfer tools that creak under the weight of modern security demands. Get full audit trails, advanced access controls and more supported by an award-winning team of experts. Start your free 25-day trial today.

Start Free Trial

CRFSharp Overview

CRFSharp is a .NET(C#) implementation of Conditional Random Field

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.

Additional Details for CRFSharp

Operating Systems

Windows

Languages

Chinese (Simplified), English

Intended Audience

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

User Interface

Command-line, Console/Terminal

Programming Language

Registered

2011-04-04

Last Updated

2015-08-03

Maintainers

monkeyfzk

Keep Me Updated!

Get an email when this software releases a new version (no other emails will be sent). Get newsletters and notices that include site news, special offers and exclusive discounts about IT products & services.

I understand by clicking on "Subscribe" below I am agreeing to the SourceForge Terms of Use and the Privacy Policy which describe how we use and share your data. I agree to receive these communications from SourceForge.net. I understand that I can withdraw my consent at anytime.

JavaScript is required for this form.

CRFSharp