Update README.md

README.md

-# Spotify Feat. Social Network Analysis - The Correlation Between Network Position and Popularity of Musicians on Spotify - Dataset
+# Spotify Feat. Social Network Analysis
+## The Correlation Between Network Position and Popularity of Musicians on Spotify
+### Dataset
 
+This repo provides the collected data described in our paper.
+All data was extracted from the Spotify API (https://developer.spotify.com/documentation/web-api/).
+
+#### Artists
+The file artists.json contains 98.249 artists with the follosing properties:
+- id: artist's Spotify ID
+- name: artist's name
+- songscount: amount of collected tracks that feature this artist
+- popularity: Spotify's popularity value for this artist
+- genres: artist's genres
+- type: always "artist"
+- filled_data: development property describing whether all properties were collected
+- extracted_collabs: development property describing whether all of this artist's tracks were collected
+- depth: development property describing in which iteration an artist was added 
+
+
+#### Tracks
+The file tracks.json contains 914.214 tracks with the follosing properties:
+- id: tracks's Spotify ID
+- artists: list of featured artists' ids
+- genres: tracks's genres; always "NaN" (no information available)
+- name: tracks's name
+- year: year that this track was released
+- popularity: Spotify's popularity value for this track
+- features: information about musical features; e.g. acousticness, danceability, loudness, ...
+- filled_data: development property describing whether all properties were collected
+- extracted_artists: development property describing whether all of this tracks's artists were collected
+- depth: development property describing in which iteration a track was added