Download - Radio recommender system for FMHost
![Page 1: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/1.jpg)
Online Recommender System for Radio Station Hosting
Vasily Zaharchuk (HSE)Dmitry Ignatov (HSE)
Andrey Konstantinov (HSE)Sergey Nikolenko (SMI RAS)
BIR 2012HSE, Nizhniy Novgorod
![Page 2: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/2.jpg)
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
![Page 3: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/3.jpg)
Online Radio Hosting FMhost
•FMhost.me or Host.fm•Real radio, not a streamer•Social network•Lives•New features•Listener oriented•Likes•Favorites
![Page 4: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/4.jpg)
Users
•Unauthorized•Listeners•DJs•Station owners
![Page 5: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/5.jpg)
Recommender System
Why is it needed?
![Page 6: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/6.jpg)
The Previous Algorithm
•Ignatov et al. 2011
![Page 7: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/7.jpg)
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
![Page 8: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/8.jpg)
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.
![Page 9: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/9.jpg)
The Model
![Page 10: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/10.jpg)
The Model: Importance Weights•Edwards, W. & Barron, F. (1994)
![Page 11: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/11.jpg)
Individual-Based RS (Algorithm RecBi3.1)•RecBi3.1 uses Af and Bf
•For a particular user
• Rank function ,
![Page 12: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/12.jpg)
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
![Page 13: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/13.jpg)
Collaborative-Based RS (Algorithm RecBi3.2)
•The set of listened stations
• Top-N recommendations
![Page 14: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/14.jpg)
End Recommender System (RecBi3.3)
• Final ranking
•
![Page 15: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/15.jpg)
QoS: Distribution Analsysis
•Looking for Power Law P(x)=Cx-a
![Page 16: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/16.jpg)
QoS: Distribution Analysis
![Page 17: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/17.jpg)
QoS: Distribution Analysis
•Pareto Principle (20%:80%)
•50%:80% for radio stations•50%:83% for user visits
![Page 18: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/18.jpg)
QoS assessment
IBRS and CBRS
![Page 19: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/19.jpg)
QoS assessment
IBRS and CBRS
ERS
![Page 20: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/20.jpg)
Conclusion
•Validation on new datasets
•Scalability issues
•Folksonomic nature of data &
Triclustering
![Page 21: Radio recommender system for FMHost](https://reader034.vdocuments.us/reader034/viewer/2022052618/554f0cc3b4c90547648b5533/html5/thumbnails/21.jpg)
Q&A
Thank you!