SlideShare ist ein Scribd-Unternehmen logo
1 von 36
Fast ALS-based matrix factorization for explicit and implicit feedback datasets Istv á n Pil á szy, D ávid Zibriczky,  Domonkos Tikk Gravity R&D Ltd. www.gravityrd.com 28   September  20 10
Collaborative filtering
Problem setting 5 4 3 4 4 2 4 1
[object Object]
[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],P T R T Q
Matrix Factorization  for explicit feedb. Q P 5 5 4 3 1 R 3.3 1.3 1.3 1. 4 1. 3 1 . 9 1. 7 0.7 1.0 1.3 0.8 0 0. 7 0.4 1. 7 0. 3 2.1 2.2 6.7 1.6 1. 4 2 4 3.3 1.6 1.8
Finding P and Q Q P R 0.3 0.9 0.7 1.3 0.5 0 .6 1.2 0.3 1. 6 1.1 5 5 4 3 1 2 4 ? ? ,[object Object],[object Object]
Finding  p 1  with RR ,[object Object]
Finding  p 1  with RR Q P R 0.3 0.9 0.7 1.3 0.5 0 .6 1.2 0.3 1. 6 1.1 5 5 4 3 1 2 4 2.3 3.2
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Implicit feedback Q P 1 0 R 0.5 0.1 0.2 0.7 0.3 0.1 0.1 0.7 0.3 0 0.2 0 0. 7 0.4 0.4 0. 4 1 0 0 0 0 1 1 0 0 1 0 1 1
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object]
Conclusions users items ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Thank you for your attention ?

Weitere ähnliche Inhalte

Was ist angesagt?

Lecture 2 fuzzy inference system
Lecture 2  fuzzy inference systemLecture 2  fuzzy inference system
Lecture 2 fuzzy inference systemParveenMalik18
 
Lecture 6 radial basis-function_network
Lecture 6 radial basis-function_networkLecture 6 radial basis-function_network
Lecture 6 radial basis-function_networkParveenMalik18
 
Multiclass Logistic Regression: Derivation and Apache Spark Examples
Multiclass Logistic Regression: Derivation and Apache Spark ExamplesMulticlass Logistic Regression: Derivation and Apache Spark Examples
Multiclass Logistic Regression: Derivation and Apache Spark ExamplesMarjan Sterjev
 
MediaEval 2015 - Emotion in Music: Task Overview
MediaEval 2015 - Emotion in Music: Task OverviewMediaEval 2015 - Emotion in Music: Task Overview
MediaEval 2015 - Emotion in Music: Task Overviewmultimediaeval
 
Bayesian Inference : Kalman filter 에서 Optimization 까지 - 김홍배 박사님
Bayesian Inference : Kalman filter 에서 Optimization 까지 - 김홍배 박사님Bayesian Inference : Kalman filter 에서 Optimization 까지 - 김홍배 박사님
Bayesian Inference : Kalman filter 에서 Optimization 까지 - 김홍배 박사님AI Robotics KR
 
Sensor Fusion Study - Ch15. The Particle Filter [Seoyeon Stella Yang]
Sensor Fusion Study - Ch15. The Particle Filter [Seoyeon Stella Yang]Sensor Fusion Study - Ch15. The Particle Filter [Seoyeon Stella Yang]
Sensor Fusion Study - Ch15. The Particle Filter [Seoyeon Stella Yang]AI Robotics KR
 
Sensor Fusion Study - Ch3. Least Square Estimation [강소라, Stella, Hayden]
Sensor Fusion Study - Ch3. Least Square Estimation [강소라, Stella, Hayden]Sensor Fusion Study - Ch3. Least Square Estimation [강소라, Stella, Hayden]
Sensor Fusion Study - Ch3. Least Square Estimation [강소라, Stella, Hayden]AI Robotics KR
 
"Speech recognition" - Hidden Markov Models @ Papers We Love Bucharest
"Speech recognition" - Hidden Markov Models @ Papers We Love Bucharest"Speech recognition" - Hidden Markov Models @ Papers We Love Bucharest
"Speech recognition" - Hidden Markov Models @ Papers We Love BucharestStefan Adam
 
Gradient Estimation Using Stochastic Computation Graphs
Gradient Estimation Using Stochastic Computation GraphsGradient Estimation Using Stochastic Computation Graphs
Gradient Estimation Using Stochastic Computation GraphsYoonho Lee
 
0415_seminar_DeepDPG
0415_seminar_DeepDPG0415_seminar_DeepDPG
0415_seminar_DeepDPGHye-min Ahn
 
Applied Machine Learning For Search Engine Relevance
Applied Machine Learning For Search Engine Relevance Applied Machine Learning For Search Engine Relevance
Applied Machine Learning For Search Engine Relevance charlesmartin14
 

Was ist angesagt? (14)

Lecture 2 fuzzy inference system
Lecture 2  fuzzy inference systemLecture 2  fuzzy inference system
Lecture 2 fuzzy inference system
 
Lecture 6 radial basis-function_network
Lecture 6 radial basis-function_networkLecture 6 radial basis-function_network
Lecture 6 radial basis-function_network
 
Multiclass Logistic Regression: Derivation and Apache Spark Examples
Multiclass Logistic Regression: Derivation and Apache Spark ExamplesMulticlass Logistic Regression: Derivation and Apache Spark Examples
Multiclass Logistic Regression: Derivation and Apache Spark Examples
 
MediaEval 2015 - Emotion in Music: Task Overview
MediaEval 2015 - Emotion in Music: Task OverviewMediaEval 2015 - Emotion in Music: Task Overview
MediaEval 2015 - Emotion in Music: Task Overview
 
Bayesian Inference : Kalman filter 에서 Optimization 까지 - 김홍배 박사님
Bayesian Inference : Kalman filter 에서 Optimization 까지 - 김홍배 박사님Bayesian Inference : Kalman filter 에서 Optimization 까지 - 김홍배 박사님
Bayesian Inference : Kalman filter 에서 Optimization 까지 - 김홍배 박사님
 
Sensor Fusion Study - Ch15. The Particle Filter [Seoyeon Stella Yang]
Sensor Fusion Study - Ch15. The Particle Filter [Seoyeon Stella Yang]Sensor Fusion Study - Ch15. The Particle Filter [Seoyeon Stella Yang]
Sensor Fusion Study - Ch15. The Particle Filter [Seoyeon Stella Yang]
 
Av 738-Adaptive Filters - Extended Kalman Filter
Av 738-Adaptive Filters - Extended Kalman FilterAv 738-Adaptive Filters - Extended Kalman Filter
Av 738-Adaptive Filters - Extended Kalman Filter
 
Sensor Fusion Study - Ch3. Least Square Estimation [강소라, Stella, Hayden]
Sensor Fusion Study - Ch3. Least Square Estimation [강소라, Stella, Hayden]Sensor Fusion Study - Ch3. Least Square Estimation [강소라, Stella, Hayden]
Sensor Fusion Study - Ch3. Least Square Estimation [강소라, Stella, Hayden]
 
"Speech recognition" - Hidden Markov Models @ Papers We Love Bucharest
"Speech recognition" - Hidden Markov Models @ Papers We Love Bucharest"Speech recognition" - Hidden Markov Models @ Papers We Love Bucharest
"Speech recognition" - Hidden Markov Models @ Papers We Love Bucharest
 
Lecture 3
Lecture 3Lecture 3
Lecture 3
 
Gradient Estimation Using Stochastic Computation Graphs
Gradient Estimation Using Stochastic Computation GraphsGradient Estimation Using Stochastic Computation Graphs
Gradient Estimation Using Stochastic Computation Graphs
 
0415_seminar_DeepDPG
0415_seminar_DeepDPG0415_seminar_DeepDPG
0415_seminar_DeepDPG
 
Applied Machine Learning For Search Engine Relevance
Applied Machine Learning For Search Engine Relevance Applied Machine Learning For Search Engine Relevance
Applied Machine Learning For Search Engine Relevance
 
ANCLMS
ANCLMSANCLMS
ANCLMS
 

Ähnlich wie Fast ALS-based matrix factorization for explicit and implicit feedback datasets

Manifold Blurring Mean Shift algorithms for manifold denoising, presentation,...
Manifold Blurring Mean Shift algorithms for manifold denoising, presentation,...Manifold Blurring Mean Shift algorithms for manifold denoising, presentation,...
Manifold Blurring Mean Shift algorithms for manifold denoising, presentation,...Florent Renucci
 
ANU ASTR 4004 / 8004 Astronomical Computing : Lecture 6
ANU ASTR 4004 / 8004 Astronomical Computing : Lecture 6ANU ASTR 4004 / 8004 Astronomical Computing : Lecture 6
ANU ASTR 4004 / 8004 Astronomical Computing : Lecture 6tingyuansenastro
 
Closed-Form Solutions in Low-Rank Subspace Recovery Models and Their Implicat...
Closed-Form Solutions in Low-Rank Subspace Recovery Models and Their Implicat...Closed-Form Solutions in Low-Rank Subspace Recovery Models and Their Implicat...
Closed-Form Solutions in Low-Rank Subspace Recovery Models and Their Implicat...少华 白
 
Extrapolation
ExtrapolationExtrapolation
Extrapolationcarlos
 
Extrapolation
ExtrapolationExtrapolation
Extrapolationjonathan
 
Extrapolation
ExtrapolationExtrapolation
ExtrapolationSamir
 
DIAPOSITIVA
DIAPOSITIVADIAPOSITIVA
DIAPOSITIVAArmando
 
Extrapolation
ExtrapolationExtrapolation
Extrapolationjonathan
 
Extrapolation
ExtrapolationExtrapolation
ExtrapolationJLMora
 
Bayesian Generalization Error and Real Log Canonical Threshold in Non-negativ...
Bayesian Generalization Error and Real Log Canonical Threshold in Non-negativ...Bayesian Generalization Error and Real Log Canonical Threshold in Non-negativ...
Bayesian Generalization Error and Real Log Canonical Threshold in Non-negativ...Naoki Hayashi
 
Kulum alin-11 jan2014
Kulum alin-11 jan2014Kulum alin-11 jan2014
Kulum alin-11 jan2014rolly purnomo
 

Ähnlich wie Fast ALS-based matrix factorization for explicit and implicit feedback datasets (20)

ilp-nlp-slides.pdf
ilp-nlp-slides.pdfilp-nlp-slides.pdf
ilp-nlp-slides.pdf
 
Manifold Blurring Mean Shift algorithms for manifold denoising, presentation,...
Manifold Blurring Mean Shift algorithms for manifold denoising, presentation,...Manifold Blurring Mean Shift algorithms for manifold denoising, presentation,...
Manifold Blurring Mean Shift algorithms for manifold denoising, presentation,...
 
ANU ASTR 4004 / 8004 Astronomical Computing : Lecture 6
ANU ASTR 4004 / 8004 Astronomical Computing : Lecture 6ANU ASTR 4004 / 8004 Astronomical Computing : Lecture 6
ANU ASTR 4004 / 8004 Astronomical Computing : Lecture 6
 
Closed-Form Solutions in Low-Rank Subspace Recovery Models and Their Implicat...
Closed-Form Solutions in Low-Rank Subspace Recovery Models and Their Implicat...Closed-Form Solutions in Low-Rank Subspace Recovery Models and Their Implicat...
Closed-Form Solutions in Low-Rank Subspace Recovery Models and Their Implicat...
 
Extrapolation
ExtrapolationExtrapolation
Extrapolation
 
Extrapolation
ExtrapolationExtrapolation
Extrapolation
 
Extrapolation
ExtrapolationExtrapolation
Extrapolation
 
mm
mmmm
mm
 
Extrapolation
ExtrapolationExtrapolation
Extrapolation
 
Extrapolation
ExtrapolationExtrapolation
Extrapolation
 
Extrapolation
ExtrapolationExtrapolation
Extrapolation
 
Extrapolation
ExtrapolationExtrapolation
Extrapolation
 
Extrapolation
ExtrapolationExtrapolation
Extrapolation
 
Extrapolation
ExtrapolationExtrapolation
Extrapolation
 
DIAPOSITIVA
DIAPOSITIVADIAPOSITIVA
DIAPOSITIVA
 
Extrapolation
ExtrapolationExtrapolation
Extrapolation
 
Extrapolation
ExtrapolationExtrapolation
Extrapolation
 
Extrapolation
ExtrapolationExtrapolation
Extrapolation
 
Bayesian Generalization Error and Real Log Canonical Threshold in Non-negativ...
Bayesian Generalization Error and Real Log Canonical Threshold in Non-negativ...Bayesian Generalization Error and Real Log Canonical Threshold in Non-negativ...
Bayesian Generalization Error and Real Log Canonical Threshold in Non-negativ...
 
Kulum alin-11 jan2014
Kulum alin-11 jan2014Kulum alin-11 jan2014
Kulum alin-11 jan2014
 

Kürzlich hochgeladen

The Future of Software Development - Devin AI Innovative Approach.pdf
The Future of Software Development - Devin AI Innovative Approach.pdfThe Future of Software Development - Devin AI Innovative Approach.pdf
The Future of Software Development - Devin AI Innovative Approach.pdfSeasiaInfotech2
 
AI as an Interface for Commercial Buildings
AI as an Interface for Commercial BuildingsAI as an Interface for Commercial Buildings
AI as an Interface for Commercial BuildingsMemoori
 
Kotlin Multiplatform & Compose Multiplatform - Starter kit for pragmatics
Kotlin Multiplatform & Compose Multiplatform - Starter kit for pragmaticsKotlin Multiplatform & Compose Multiplatform - Starter kit for pragmatics
Kotlin Multiplatform & Compose Multiplatform - Starter kit for pragmaticscarlostorres15106
 
Developer Data Modeling Mistakes: From Postgres to NoSQL
Developer Data Modeling Mistakes: From Postgres to NoSQLDeveloper Data Modeling Mistakes: From Postgres to NoSQL
Developer Data Modeling Mistakes: From Postgres to NoSQLScyllaDB
 
Dev Dives: Streamline document processing with UiPath Studio Web
Dev Dives: Streamline document processing with UiPath Studio WebDev Dives: Streamline document processing with UiPath Studio Web
Dev Dives: Streamline document processing with UiPath Studio WebUiPathCommunity
 
Gen AI in Business - Global Trends Report 2024.pdf
Gen AI in Business - Global Trends Report 2024.pdfGen AI in Business - Global Trends Report 2024.pdf
Gen AI in Business - Global Trends Report 2024.pdfAddepto
 
Story boards and shot lists for my a level piece
Story boards and shot lists for my a level pieceStory boards and shot lists for my a level piece
Story boards and shot lists for my a level piececharlottematthew16
 
Unraveling Multimodality with Large Language Models.pdf
Unraveling Multimodality with Large Language Models.pdfUnraveling Multimodality with Large Language Models.pdf
Unraveling Multimodality with Large Language Models.pdfAlex Barbosa Coqueiro
 
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024BookNet Canada
 
Commit 2024 - Secret Management made easy
Commit 2024 - Secret Management made easyCommit 2024 - Secret Management made easy
Commit 2024 - Secret Management made easyAlfredo García Lavilla
 
Advanced Test Driven-Development @ php[tek] 2024
Advanced Test Driven-Development @ php[tek] 2024Advanced Test Driven-Development @ php[tek] 2024
Advanced Test Driven-Development @ php[tek] 2024Scott Keck-Warren
 
Are Multi-Cloud and Serverless Good or Bad?
Are Multi-Cloud and Serverless Good or Bad?Are Multi-Cloud and Serverless Good or Bad?
Are Multi-Cloud and Serverless Good or Bad?Mattias Andersson
 
Connect Wave/ connectwave Pitch Deck Presentation
Connect Wave/ connectwave Pitch Deck PresentationConnect Wave/ connectwave Pitch Deck Presentation
Connect Wave/ connectwave Pitch Deck PresentationSlibray Presentation
 
Tampa BSides - Chef's Tour of Microsoft Security Adoption Framework (SAF)
Tampa BSides - Chef's Tour of Microsoft Security Adoption Framework (SAF)Tampa BSides - Chef's Tour of Microsoft Security Adoption Framework (SAF)
Tampa BSides - Chef's Tour of Microsoft Security Adoption Framework (SAF)Mark Simos
 
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks..."LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...Fwdays
 
DevoxxFR 2024 Reproducible Builds with Apache Maven
DevoxxFR 2024 Reproducible Builds with Apache MavenDevoxxFR 2024 Reproducible Builds with Apache Maven
DevoxxFR 2024 Reproducible Builds with Apache MavenHervé Boutemy
 
Scanning the Internet for External Cloud Exposures via SSL Certs
Scanning the Internet for External Cloud Exposures via SSL CertsScanning the Internet for External Cloud Exposures via SSL Certs
Scanning the Internet for External Cloud Exposures via SSL CertsRizwan Syed
 
WordPress Websites for Engineers: Elevate Your Brand
WordPress Websites for Engineers: Elevate Your BrandWordPress Websites for Engineers: Elevate Your Brand
WordPress Websites for Engineers: Elevate Your Brandgvaughan
 

Kürzlich hochgeladen (20)

The Future of Software Development - Devin AI Innovative Approach.pdf
The Future of Software Development - Devin AI Innovative Approach.pdfThe Future of Software Development - Devin AI Innovative Approach.pdf
The Future of Software Development - Devin AI Innovative Approach.pdf
 
AI as an Interface for Commercial Buildings
AI as an Interface for Commercial BuildingsAI as an Interface for Commercial Buildings
AI as an Interface for Commercial Buildings
 
Kotlin Multiplatform & Compose Multiplatform - Starter kit for pragmatics
Kotlin Multiplatform & Compose Multiplatform - Starter kit for pragmaticsKotlin Multiplatform & Compose Multiplatform - Starter kit for pragmatics
Kotlin Multiplatform & Compose Multiplatform - Starter kit for pragmatics
 
Developer Data Modeling Mistakes: From Postgres to NoSQL
Developer Data Modeling Mistakes: From Postgres to NoSQLDeveloper Data Modeling Mistakes: From Postgres to NoSQL
Developer Data Modeling Mistakes: From Postgres to NoSQL
 
Dev Dives: Streamline document processing with UiPath Studio Web
Dev Dives: Streamline document processing with UiPath Studio WebDev Dives: Streamline document processing with UiPath Studio Web
Dev Dives: Streamline document processing with UiPath Studio Web
 
Gen AI in Business - Global Trends Report 2024.pdf
Gen AI in Business - Global Trends Report 2024.pdfGen AI in Business - Global Trends Report 2024.pdf
Gen AI in Business - Global Trends Report 2024.pdf
 
Story boards and shot lists for my a level piece
Story boards and shot lists for my a level pieceStory boards and shot lists for my a level piece
Story boards and shot lists for my a level piece
 
Unraveling Multimodality with Large Language Models.pdf
Unraveling Multimodality with Large Language Models.pdfUnraveling Multimodality with Large Language Models.pdf
Unraveling Multimodality with Large Language Models.pdf
 
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
 
Commit 2024 - Secret Management made easy
Commit 2024 - Secret Management made easyCommit 2024 - Secret Management made easy
Commit 2024 - Secret Management made easy
 
Advanced Test Driven-Development @ php[tek] 2024
Advanced Test Driven-Development @ php[tek] 2024Advanced Test Driven-Development @ php[tek] 2024
Advanced Test Driven-Development @ php[tek] 2024
 
Are Multi-Cloud and Serverless Good or Bad?
Are Multi-Cloud and Serverless Good or Bad?Are Multi-Cloud and Serverless Good or Bad?
Are Multi-Cloud and Serverless Good or Bad?
 
Connect Wave/ connectwave Pitch Deck Presentation
Connect Wave/ connectwave Pitch Deck PresentationConnect Wave/ connectwave Pitch Deck Presentation
Connect Wave/ connectwave Pitch Deck Presentation
 
E-Vehicle_Hacking_by_Parul Sharma_null_owasp.pptx
E-Vehicle_Hacking_by_Parul Sharma_null_owasp.pptxE-Vehicle_Hacking_by_Parul Sharma_null_owasp.pptx
E-Vehicle_Hacking_by_Parul Sharma_null_owasp.pptx
 
Tampa BSides - Chef's Tour of Microsoft Security Adoption Framework (SAF)
Tampa BSides - Chef's Tour of Microsoft Security Adoption Framework (SAF)Tampa BSides - Chef's Tour of Microsoft Security Adoption Framework (SAF)
Tampa BSides - Chef's Tour of Microsoft Security Adoption Framework (SAF)
 
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks..."LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
 
DevoxxFR 2024 Reproducible Builds with Apache Maven
DevoxxFR 2024 Reproducible Builds with Apache MavenDevoxxFR 2024 Reproducible Builds with Apache Maven
DevoxxFR 2024 Reproducible Builds with Apache Maven
 
DMCC Future of Trade Web3 - Special Edition
DMCC Future of Trade Web3 - Special EditionDMCC Future of Trade Web3 - Special Edition
DMCC Future of Trade Web3 - Special Edition
 
Scanning the Internet for External Cloud Exposures via SSL Certs
Scanning the Internet for External Cloud Exposures via SSL CertsScanning the Internet for External Cloud Exposures via SSL Certs
Scanning the Internet for External Cloud Exposures via SSL Certs
 
WordPress Websites for Engineers: Elevate Your Brand
WordPress Websites for Engineers: Elevate Your BrandWordPress Websites for Engineers: Elevate Your Brand
WordPress Websites for Engineers: Elevate Your Brand
 

Fast ALS-based matrix factorization for explicit and implicit feedback datasets

  • 1. Fast ALS-based matrix factorization for explicit and implicit feedback datasets Istv á n Pil á szy, D ávid Zibriczky, Domonkos Tikk Gravity R&D Ltd. www.gravityrd.com 28 September 20 10
  • 3. Problem setting 5 4 3 4 4 2 4 1
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 13.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18. Matrix Factorization for explicit feedb. Q P 5 5 4 3 1 R 3.3 1.3 1.3 1. 4 1. 3 1 . 9 1. 7 0.7 1.0 1.3 0.8 0 0. 7 0.4 1. 7 0. 3 2.1 2.2 6.7 1.6 1. 4 2 4 3.3 1.6 1.8
  • 19.
  • 20.
  • 21. Finding p 1 with RR Q P R 0.3 0.9 0.7 1.3 0.5 0 .6 1.2 0.3 1. 6 1.1 5 5 4 3 1 2 4 2.3 3.2
  • 22.
  • 23.
  • 24. Implicit feedback Q P 1 0 R 0.5 0.1 0.2 0.7 0.3 0.1 0.1 0.7 0.3 0 0.2 0 0. 7 0.4 0.4 0. 4 1 0 0 0 0 1 1 0 0 1 0 1 1
  • 25.
  • 26.
  • 27.
  • 28.
  • 29.
  • 30.
  • 31.
  • 32.
  • 33.
  • 34.
  • 35.
  • 36. Thank you for your attention ?