Software

Spotify Playlist Explorer

DBIS #Spotify Playlist Dataset Analyzer

For our research paper "Understanding Playlist Creation on Music Streaming Platforms" we analyzed more than 18,000 Spotify playlists containing 796.000 distinct tracks curated by more than 1,100 users. For the analysis and to make our findings traceable for other researchers we implemented a web-based analysis tool.

DBIS #Spotify Playlist Dataset Analyzer

 

Wikidata Editor

PropertyRecommenderEvaluator

The PropertyRecommenderEvaluator is a python framework for the evaluation of property recommender systems which aim at supporting users in adding information in collaborative environments based on the triple format (subject, property, object). 

 Github

[Wikidata Property Datamodel by Charlie Kritschmar (WMDE) is licensed under CC0]

Recursion Tool

Recursion Tool

Description incoming

 Github

 

RelaX

RelaX

The goal of this tutorial is to give a quick introduction how to use the relational algebra calculator and its concepts. It assumes that you already know the relational algebra or are learning it from other sources.

There is no real standard for the relational algebra like there is for SQL. So every book or teacher might have its slightly different interpretation and notation.
The goal of this progam was to support the most commonly used "mathematical" notation used by Database Systems The Complete Book 2nd Edition by Hector Garcia-Molina, Jeff Ullman, and Jennifer WidomDatenbanksysteme: Eine Einführung by Alfons Kemper and André Eickler and Wikipedia - Relational Algebra and others.

 RelaX