Palmetto: Palmetto is a quality measuring tool for topics

Palmetto is a quality measuring tool for topics based on coherence calculations.

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Logo Palmetto Palmetto is a quality measuring tool for topics

With Topic Modeling it is possible to extract topics from a collection of documents automatically and unsupervised. A disadvantage of Topic Modeling is that in most cases the created topics have to be evaluated manually by humans. Palmetto is a tool which tries to help researchers by offering different coherence calculations for a topic's top words. These coherences are based on word co-occurrences in the english wikipedia and have been proven to correlate with human ratings.

The source code is dual licensed and can be found at github. For larger experiments the program can be downloaded or the webservice can be used. More on how Palmetto could be used can be found on this wikipage.

A Dutch index for Palmetto has been created by van der Zwaan, Marx and Kamps. Thus, Palmetto can be used for Dutch as well. The index can be downloaded here.

For researchers who want to try out different coherences by themself, it might be interesting that Palmetto can be used as Java library and already contains more than 200.000 coherences that have been evaluated for the publication Exploring the Space of Topic Coherences.

The topics and human ratings used in this publication as well as the Movie and RTL-Wiki corpora can be found here. Since we did not create all datasets by ourself, please cite the creators/providers of the datasets where appropriate. You can find the reference of their publications in our paper in the section that describes the datasets.

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News

ESWC 2017 accepted two Demo Papers by AKSW members ( 2017-04-19T10:19:43+02:00 Christopher Schulz)

2017-04-19T10:19:43+02:00 Christopher Schulz

Hello Community! The 14th ESWC, which takes place from May 28th to June 1st 2017 in Portoroz, Slovenia, accepted two demos to be presented at the conference. Read more about them in the following:                                                                         1. Read more about "ESWC 2017 accepted two Demo Papers by AKSW members"

AKSW Colloquium, 10.04.2017, GeoSPARQL on geospatial databases ( 2017-04-07T10:43:55+02:00 by Dr. Matthias Wauer)

2017-04-07T10:43:55+02:00 by Dr. Matthias Wauer

At the AKSW Colloquium, on Monday 10th of April 2017, 3 PM, Matthias Wauer will discuss a paper titled “Ontop of Geospatial Databases“. Read more about "AKSW Colloquium, 10.04.2017, GeoSPARQL on geospatial databases"

AKSW Colloquium, 03.04.2017, RDF Rule Mining ( 2017-03-31T13:39:28+02:00 TommasoSoru)

2017-03-31T13:39:28+02:00 TommasoSoru

At the AKSW Colloquium, on Monday 3rd of April 2017, 3 PM, Tommaso Soru will present the state of his ongoing research titled “Efficient Rule Mining on RDF Data”, where he will introduce Horn Concerto, a novel scalable SPARQL-based approach … Continue reading → Read more about "AKSW Colloquium, 03.04.2017, RDF Rule Mining"

AKSW Colloquium, 27.03.2017, PPO & PPM 2.0: Extending the privacy preference framework to provide finer-grained access control for the Web of Data ( 2017-03-27T10:13:08+02:00 by Marvin Frommhold)

2017-03-27T10:13:08+02:00 by Marvin Frommhold

In the upcoming Colloquium, March the 27th at 3 PM Marvin Frommhold will discuss the paper “PPO & PPM 2.0: Extending the Privacy Preference Framework to provide finer-grained access control for the Web of Data” by Owen Sacco and John G. Read more about "AKSW Colloquium, 27.03.2017, PPO & PPM 2.0: Extending the privacy preference framework to provide finer-grained access control for the Web of Data"

DBpedia @ Google Summer of Code – GSoC 2017 ( 2017-03-13T11:12:50+01:00 Christopher Schulz)

2017-03-13T11:12:50+01:00 Christopher Schulz

DBpedia, one of InfAI’s community projects, will be part of the 5th Google Summer of Code program. The GsoC has the goal to bring students from all over the globe into open source software development. Read more about "DBpedia @ Google Summer of Code – GSoC 2017"