kod3r / rdfsim Goto Github PK
View Code? Open in Web Editor NEWThis project forked from bbc/rdfsim
Large RDF hierarchies as vector spaces
License: Other
This project forked from bbc/rdfsim
Large RDF hierarchies as vector spaces
License: Other
RDFSim ====== This Python library helps generating a vector space from very large hierarchies encoded in RDF. An obvious example application is to generate a vector space from a SKOS hierarchy or an RDFS subclass hierarchy. Getting started --------------- Running the tests: $ nosetests Installing: $ python setup.py install Example use ----------- $ wget http://downloads.dbpedia.org/3.7/en/skos_categories_en.nt.bz2 $ bunzip2 skos_categories_en.nt.bz2 $ python >>> from rdfsim.space import Space >>> space = Space('skos_categories_en.nt') >>> space.similarity_uri(category1, category2) Constructing a vector space for the entire DBpedia SKOS category hierarchy (3M triples) takes a couple of minutes on a commodity laptop, and has a memory footprint of about 500M. Alternatively, a subset of it is available in the examples/ directory. How it works ------------ For each topic t in the hierarchy, we consider the set of its parents parents(t, k) at a level k. We construct a vector for each t in a space where each dimension corresponds to a topic d in the hierarchy. The value of t on dimension d is defined as follows: t_d = \sum_{k = 0}^{max_depth} \sum_{d \in parents(t, k)} decay^k where max_depth and decay are two parameters, which can be used to influence how much importance we attach to ancestors that are high in the category hierarchy. They can be specified as follows: >>> Space.max_depth = 8 >>> Space.decay = 0.9 Licensing terms and authorship ------------------------------ See 'COPYING' and 'AUTHORS' files.
A declarative, efficient, and flexible JavaScript library for building user interfaces.
๐ Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. ๐๐๐
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google โค๏ธ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.