1. Online Recommender System
for Radio Station Hosting
Vasily Zaharchuk (HSE) Andrey Konstantinov (HSE)
Dmitry Ignatov (HSE) Sergey Nikolenko (SMI RAS)
BIR 2012
HSE, Nizhniy Novgorod
2. Outline
• FMhost Online Radio Hosting
• Recommender Model
▫ Data
▫ Model and Algorithms
• Quality of Service Evaluation (QoS)
▫ User and Radio Station Activity Analaysis
▫ Evaluation Technique
• Conclusion
3. Online Radio Hosting FMhost
• FMhost.me or Host.fm
• Real radio, not a streamer
• Social network
• Lives
• New features
• Listener oriented
• Likes
• Favorites
7. Math
• Math math math math math math math math
• Math math math math math math math math
• Math math math math math math math math
• Math math math math math math math math
• Math math math math math math math math
• Math math math math math math math math
• Math math math math math math math math
8. The Model: Data
• U is a set of users, R is a set of radio stations, T is
a set of tags
• A=(aut), B=(brt), and C=(cur)
• frequency vectors
• Normalized matrices, e.g.
12. Collaborative-Based RS (Algorithm RecBi3.2)
• RecBi3.2 uses Cf and vector nC, the latter
contains a total number of listened stations for
each
• D is a distance matrix
• Top-k neighbors