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Published in: Knowledge and Information Systems 8/2020

14-03-2020 | Regular Paper

CAMAR: a broad learning based context-aware recommender for mobile applications

Authors: Tingting Liang, Lifang He, Chun-Ta Lu, Liang Chen, Haochao Ying, Philip S. Yu, Jian Wu

Published in: Knowledge and Information Systems | Issue 8/2020

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Abstract

The emergence of a large number of mobile apps brings challenges to locate appropriate apps for users, which makes mobile app recommendation an imperative task. In this paper, we first conduct detailed data analysis to show the characteristics of mobile apps which are different with conventional items (e.g., movies, books). Considering the specific property of mobile apps, we propose a broad learning approach for context-aware mobile app recommendation with tensor analysis (CAMAR). Specifically, we utilize a tensor-based framework to effectively integrate app category information and multi-view features on users and apps to facilitate the performance of app recommendation. The multi-dimensional structure is employed to capture the hidden relationships among the app categories and multi-view features. We develop an efficient factorization method which applies Tucker decomposition to jointly learn the full-order interactions among the app categories and features without physically building the tensor. Furthermore, we employ a group \(\ell _{1}\)-norm regularization to learn the group-wise feature importance of each view with respect to each app category. Experiments on two real-world datasets demonstrate the effectiveness of the proposed method.

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Footnotes
3
Full-order interactions range from the first-order interactions (i.e., single-view features in each category) to the highest-order interactions (i.e., all combinations of features from multiple views and from different categories).
 
Literature
1.
go back to reference Argyriou A, Evgeniou T, Pontil M (2007) Multi-task feature learning. In: Proceedings 21st international conference neural information processing systems, pp 41–48 Argyriou A, Evgeniou T, Pontil M (2007) Multi-task feature learning. In: Proceedings 21st international conference neural information processing systems, pp 41–48
2.
go back to reference Argyriou A, Evgeniou T, Pontil M (2008) Convex multi-task feature learning. Mach Learn 73(3):243–272CrossRef Argyriou A, Evgeniou T, Pontil M (2008) Convex multi-task feature learning. Mach Learn 73(3):243–272CrossRef
3.
go back to reference Blum A, Mitchell T (1998) Combining labeled and unlabeled data with co-training. In: Proceedings of the 11th annual conference on computational learning theory, pp 92–100 Blum A, Mitchell T (1998) Combining labeled and unlabeled data with co-training. In: Proceedings of the 11th annual conference on computational learning theory, pp 92–100
4.
go back to reference Cao B, He L, Kong X, Yu PS, Hao Z, Ragin AB (2014) Tensor-based multi-view feature selection with applications to brain diseases. In: Proceedings of the 14th IEEE international conference international of data mining, pp 40–49 Cao B, He L, Kong X, Yu PS, Hao Z, Ragin AB (2014) Tensor-based multi-view feature selection with applications to brain diseases. In: Proceedings of the 14th IEEE international conference international of data mining, pp 40–49
5.
go back to reference Cao B, Zhou H, Li G, Yu PS (2016) Multi-view machines. In: Proceedings of the 9th ACM international conference Web Search data mining, pp 427–436 Cao B, Zhou H, Li G, Yu PS (2016) Multi-view machines. In: Proceedings of the 9th ACM international conference Web Search data mining, pp 427–436
6.
go back to reference Cao D, He X, Nie L, Wei X, Hu X, Wu S, Chua TS (2017) Cross-platform app recommendation by jointly modeling ratings and texts. ACM Trans Inform Syst (TOIS) 35(4):37 Cao D, He X, Nie L, Wei X, Hu X, Wu S, Chua TS (2017) Cross-platform app recommendation by jointly modeling ratings and texts. ACM Trans Inform Syst (TOIS) 35(4):37
7.
go back to reference Chao G, Sun S (2016) Consensus and complementarity based maximum entropy discrimination for multi-view classification. Inform Sci 367:296–310CrossRef Chao G, Sun S (2016) Consensus and complementarity based maximum entropy discrimination for multi-view classification. Inform Sci 367:296–310CrossRef
8.
go back to reference Cichocki A, Mørup M, Smaragdis P, Wang W, Zdunek R (2008) Advances in nonnegative matrix and tensor factorization. Comput Intell Neurosci Cichocki A, Mørup M, Smaragdis P, Wang W, Zdunek R (2008) Advances in nonnegative matrix and tensor factorization. Comput Intell Neurosci
9.
go back to reference Diao Q, Qiu M, Wu CY, Smola AJ, Jiang J, Wang C (2014) Jointly modeling aspects, ratings and sentiments for movie recommendation (jmars). In: Proceedings of the 20th ACM SIGKDD international conference on knowledge. Discovery Data Mining, pp 193–202 Diao Q, Qiu M, Wu CY, Smola AJ, Jiang J, Wang C (2014) Jointly modeling aspects, ratings and sentiments for movie recommendation (jmars). In: Proceedings of the 20th ACM SIGKDD international conference on knowledge. Discovery Data Mining, pp 193–202
10.
go back to reference Ding C, Zhou D, He X, Zha H (2006) R 1-pca: rotational invariant l 1-norm principal component analysis for robust subspace factorization. In: Proceedings of the 23rd international conference on machine learning, pp 281–288 Ding C, Zhou D, He X, Zha H (2006) R 1-pca: rotational invariant l 1-norm principal component analysis for robust subspace factorization. In: Proceedings of the 23rd international conference on machine learning, pp 281–288
11.
go back to reference Ding Z, Fu Y (2014) Low-rank common subspace for multi-view learning. In: Proceedings of the fourteenth international conference on data mining, pp 110–119 Ding Z, Fu Y (2014) Low-rank common subspace for multi-view learning. In: Proceedings of the fourteenth international conference on data mining, pp 110–119
12.
go back to reference Gunawardana A, Shani G (2009) A survey of accuracy evaluation metrics of recommendation tasks. J Mach Learn Res 10(Dec):2935–2962MathSciNetMATH Gunawardana A, Shani G (2009) A survey of accuracy evaluation metrics of recommendation tasks. J Mach Learn Res 10(Dec):2935–2962MathSciNetMATH
13.
go back to reference He L, Lu CT, Ding H, Wang S, Shen L, Yu PS, Ragin AB (2017) Multi-way multi-level kernel modeling for neuroimaging classification. In: Proceedings of the IEEE conference on computer vision and pattern recognition, pp 356–364 He L, Lu CT, Ding H, Wang S, Shen L, Yu PS, Ragin AB (2017) Multi-way multi-level kernel modeling for neuroimaging classification. In: Proceedings of the IEEE conference on computer vision and pattern recognition, pp 356–364
14.
go back to reference Huang H, Ding C (2008) Robust tensor factorization using r 1 norm. In: Proceedings of the IEEE conference on computer vision and pattern recognition, pp 1–8 Huang H, Ding C (2008) Robust tensor factorization using r 1 norm. In: Proceedings of the IEEE conference on computer vision and pattern recognition, pp 1–8
15.
go back to reference Jaakkola T, Meila M, Jebara T (2000) Maximum entropy discrimination. In: Proceedings of the 14th international conference on neural information processing systems, pp 470–476 Jaakkola T, Meila M, Jebara T (2000) Maximum entropy discrimination. In: Proceedings of the 14th international conference on neural information processing systems, pp 470–476
16.
go back to reference Karatzoglou A, Baltrunas L, Church K, Böhmer M (2012) Climbing the app wall: enabling mobile app discovery through context-aware recommendations. In: 21st ACM international conference on information and knowledge management, pp 2527–2530 Karatzoglou A, Baltrunas L, Church K, Böhmer M (2012) Climbing the app wall: enabling mobile app discovery through context-aware recommendations. In: 21st ACM international conference on information and knowledge management, pp 2527–2530
18.
go back to reference Kotsia I, Patras I (2011) Support tucker machines. In: Proceedings of the IEEE conference on computer vision and pattern recognition , pp 633–640 Kotsia I, Patras I (2011) Support tucker machines. In: Proceedings of the IEEE conference on computer vision and pattern recognition , pp 633–640
19.
go back to reference Li Y, Nie F, Huang H, Huang J (2015) Large-scale multi-view spectral clustering via bipartite graph. In: Proceedings of the AAAI, pp 2750–2756 Li Y, Nie F, Huang H, Huang J (2015) Large-scale multi-view spectral clustering via bipartite graph. In: Proceedings of the AAAI, pp 2750–2756
20.
go back to reference Liang T, Chen L, Ying X, Philip SY, Wu J, Zheng Z (2017) Mobile application rating prediction via feature-oriented matrix factorization. In: Proceedings of the 24th IEEE international conference on web services, pp 261–268 Liang T, Chen L, Ying X, Philip SY, Wu J, Zheng Z (2017) Mobile application rating prediction via feature-oriented matrix factorization. In: Proceedings of the 24th IEEE international conference on web services, pp 261–268
21.
go back to reference Lin J, Sugiyama K, Kan MY, Chua TS (2013) Addressing cold-start in app recommendation: latent user models constructed from twitter followers. In: Proceedings of the 36th annual international ACM conference on research and development in information retrieval, pp 283–292 Lin J, Sugiyama K, Kan MY, Chua TS (2013) Addressing cold-start in app recommendation: latent user models constructed from twitter followers. In: Proceedings of the 36th annual international ACM conference on research and development in information retrieval, pp 283–292
22.
go back to reference Liu B, Kong D, Cen L, Gong NZ, Jin H, Xiong H (2015) Personalized mobile app recommendation: Reconciling app functionality and user privacy preference. In: Proceedings of the eighth ACM international conference on web search and data mining, pp 315–324 Liu B, Kong D, Cen L, Gong NZ, Jin H, Xiong H (2015) Personalized mobile app recommendation: Reconciling app functionality and user privacy preference. In: Proceedings of the eighth ACM international conference on web search and data mining, pp 315–324
23.
go back to reference Liu B, Wu Y, Gong NZ, Wu J, Xiong H, Ester M (2016) Structural analysis of user choices for mobile app recommendation. ACM Trans Knowl Discov Data (TKDD) 11(2):17 Liu B, Wu Y, Gong NZ, Wu J, Xiong H, Ester M (2016) Structural analysis of user choices for mobile app recommendation. ACM Trans Knowl Discov Data (TKDD) 11(2):17
24.
go back to reference Lu CT, He L, Ding H, Yu PS (2017) Learning from multi-view structural data via structural factorization machines. arXiv preprint arXiv:1704.03037 Lu CT, He L, Ding H, Yu PS (2017) Learning from multi-view structural data via structural factorization machines. arXiv preprint arXiv:​1704.​03037
25.
go back to reference Lu CT, He L, Shao W, Cao B, Yu PS (2017) Multilinear factorization machines for multi-task multi-view learning. In: Proceedings of the tenth ACM international conference on web search and data mining, pp 701–709 Lu CT, He L, Shao W, Cao B, Yu PS (2017) Multilinear factorization machines for multi-task multi-view learning. In: Proceedings of the tenth ACM international conference on web search and data mining, pp 701–709
26.
go back to reference Lu CT, Xie S, Shao W, He L, Yu PS (2016) Item recommendation for emerging online businesses. In: Proceedings of the 25th international joint conference on artificial intelligence, pp 3797–3803 Lu CT, Xie S, Shao W, He L, Yu PS (2016) Item recommendation for emerging online businesses. In: Proceedings of the 25th international joint conference on artificial intelligence, pp 3797–3803
27.
go back to reference Mao L, Sun S (2016) Soft margin consistency based scalable multi-view maximum entropy discrimination. In: Proceedings of the 25th international joint conference on artificial intelligence, pp 1839–1845 Mao L, Sun S (2016) Soft margin consistency based scalable multi-view maximum entropy discrimination. In: Proceedings of the 25th international joint conference on artificial intelligence, pp 1839–1845
28.
go back to reference Meng J, Zheng Z, Tao G, Liu X (2016) User-specific rating prediction for mobile applications via weight-based matrix factorization. In: International conference on web services (ICWS), pp 728–731. IEEE Meng J, Zheng Z, Tao G, Liu X (2016) User-specific rating prediction for mobile applications via weight-based matrix factorization. In: International conference on web services (ICWS), pp 728–731. IEEE
29.
30.
go back to reference Nigam K, Ghani R (2000) Analyzing the effectiveness and applicability of co-training. In: Proceedings of the 9th ACM international conference on information and knowledge management, pp 86–93 Nigam K, Ghani R (2000) Analyzing the effectiveness and applicability of co-training. In: Proceedings of the 9th ACM international conference on information and knowledge management, pp 86–93
31.
go back to reference Van den Oord A, Dieleman S, Schrauwen B (2013) Deep content-based music recommendation. In: Proceedings of the 27th international conference neural information processing systems, pp 2643–2651 Van den Oord A, Dieleman S, Schrauwen B (2013) Deep content-based music recommendation. In: Proceedings of the 27th international conference neural information processing systems, pp 2643–2651
32.
go back to reference Ren Z, Zhang C, Li T, Hu Z (2017) Taxonomy-induced matrix factorization for inferring preference of mobile telecom users. In: 18th IEEE international conference on mobile data management (MDM), pp 328–331. IEEE Ren Z, Zhang C, Li T, Hu Z (2017) Taxonomy-induced matrix factorization for inferring preference of mobile telecom users. In: 18th IEEE international conference on mobile data management (MDM), pp 328–331. IEEE
33.
go back to reference Rendle S (2010) Factorization machines. In: Proceedings of the 10th IEEE international conference on data mining, pp 995–1000 Rendle S (2010) Factorization machines. In: Proceedings of the 10th IEEE international conference on data mining, pp 995–1000
34.
go back to reference Ricci F, Rokach L, Shapira B (2011) Introduction to recommender systems handbook. Springer, BerlinCrossRef Ricci F, Rokach L, Shapira B (2011) Introduction to recommender systems handbook. Springer, BerlinCrossRef
35.
go back to reference Salakhutdinov R, Mnih A (2007) Probabilistic matrix factorization. In: Proceedings of the 21st international conference on neural information processing systems, vol 1, pp 2–1 Salakhutdinov R, Mnih A (2007) Probabilistic matrix factorization. In: Proceedings of the 21st international conference on neural information processing systems, vol 1, pp 2–1
36.
go back to reference Shalev-Shwartz S, Ben-David S (2014) Understanding machine learning: from theory to algorithms. Cambridge University Press, CambridgeCrossRef Shalev-Shwartz S, Ben-David S (2014) Understanding machine learning: from theory to algorithms. Cambridge University Press, CambridgeCrossRef
37.
go back to reference Shao W, He L, Lu Ct, Philip SY (2016) Online multi-view clustering with incomplete views. In: Proceedings of the IEEE international conference on big data, pp 1012–1017 Shao W, He L, Lu Ct, Philip SY (2016) Online multi-view clustering with incomplete views. In: Proceedings of the IEEE international conference on big data, pp 1012–1017
38.
go back to reference Shao W, He L, Lu CT, Wei X, Yu PS (2016) Online unsupervised multi-view feature selection. In: Proceedings of the 16th IEEE international conference on data mining, pp 1203–1208 Shao W, He L, Lu CT, Wei X, Yu PS (2016) Online unsupervised multi-view feature selection. In: Proceedings of the 16th IEEE international conference on data mining, pp 1203–1208
39.
go back to reference Shao W, He L, Yu PS (2015) Clustering on multi-source incomplete data via tensor modeling and factorization. In: Proceedings of the 19th Pacific-Asia conference knowledge discovery data mining, pp 485–497 Shao W, He L, Yu PS (2015) Clustering on multi-source incomplete data via tensor modeling and factorization. In: Proceedings of the 19th Pacific-Asia conference knowledge discovery data mining, pp 485–497
40.
go back to reference Shao W, He L, Yu PS (2015) Multiple incomplete views clustering via weighted nonnegative matrix factorization with \(l\_ \{2, 1\}\) regularization. In: Proceedings of the ECML PKDD European conference on machine learning and principles and practice of knowledge discovery in databases, pp 318–334. Springer Shao W, He L, Yu PS (2015) Multiple incomplete views clustering via weighted nonnegative matrix factorization with \(l\_ \{2, 1\}\) regularization. In: Proceedings of the ECML PKDD European conference on machine learning and principles and practice of knowledge discovery in databases, pp 318–334. Springer
41.
go back to reference Sun S, Chao G (2013) Multi-view maximum entropy discrimination. In: Proceedings of the 22nd international joint conference on artificial intelligence, pp 1706–1712 Sun S, Chao G (2013) Multi-view maximum entropy discrimination. In: Proceedings of the 22nd international joint conference on artificial intelligence, pp 1706–1712
42.
go back to reference Sun S, Shawe-Taylor J (2010) Sparse semi-supervised learning using conjugate functions. J Mach Learn Res 11(Sep):2423–2455MathSciNetMATH Sun S, Shawe-Taylor J (2010) Sparse semi-supervised learning using conjugate functions. J Mach Learn Res 11(Sep):2423–2455MathSciNetMATH
43.
go back to reference Sun S, Xie X, Yang M (2016) Multiview uncorrelated discriminant analysis. IEEE Trans Cybern 46(12):3272–3284CrossRef Sun S, Xie X, Yang M (2016) Multiview uncorrelated discriminant analysis. IEEE Trans Cybern 46(12):3272–3284CrossRef
44.
go back to reference Wang H, Nie F, Huang H, Yan J, Kim S, Risacher S, Saykin A, Shen L (2012) High-order multi-task feature learning to identify longitudinal phenotypic markers for alzheimer’s disease progression prediction. In: Proceedings of the 26th international conference on neural information processing, pp 1277–1285 Wang H, Nie F, Huang H, Yan J, Kim S, Risacher S, Saykin A, Shen L (2012) High-order multi-task feature learning to identify longitudinal phenotypic markers for alzheimer’s disease progression prediction. In: Proceedings of the 26th international conference on neural information processing, pp 1277–1285
45.
go back to reference Wong WK, Lai Z, Xu Y, Wen J, Ho CP (2015) Joint tensor feature analysis for visual object recognition. IEEE Trans Cybern 45(11):2425–2436CrossRef Wong WK, Lai Z, Xu Y, Wen J, Ho CP (2015) Joint tensor feature analysis for visual object recognition. IEEE Trans Cybern 45(11):2425–2436CrossRef
46.
go back to reference Xie X, Sun S (2015) Multi-view twin support vector machines. Intell Data Anal 19(4):701–712CrossRef Xie X, Sun S (2015) Multi-view twin support vector machines. Intell Data Anal 19(4):701–712CrossRef
47.
go back to reference Yan B, Chen G (2011) Appjoy: personalized mobile application discovery. In: Proceedings of the 9th international conference on mobile systems, applications, and services, pp 113–126 Yan B, Chen G (2011) Appjoy: personalized mobile application discovery. In: Proceedings of the 9th international conference on mobile systems, applications, and services, pp 113–126
48.
go back to reference Yang P, Gao W (2013) Multi-view discriminant transfer learning. In: Proceedings of the twenty-second international joint conference on artificial intelligence, pp 1848–1854 Yang P, Gao W (2013) Multi-view discriminant transfer learning. In: Proceedings of the twenty-second international joint conference on artificial intelligence, pp 1848–1854
49.
go back to reference Yao Y, Zhao WX, Wang Y, Tong H, Xu F, Lu J (2017) Version-aware rating prediction for mobile app recommendation. ACM Trans Inf Syst (TOIS) 35(4):38CrossRef Yao Y, Zhao WX, Wang Y, Tong H, Xu F, Lu J (2017) Version-aware rating prediction for mobile app recommendation. ACM Trans Inf Syst (TOIS) 35(4):38CrossRef
50.
go back to reference Yin P, Luo P, Lee WC, Wang M (2013) App recommendation: a contest between satisfaction and temptation. In: Proceedings of the sixth ACM international conference on web search and data mining, pp 395–404 Yin P, Luo P, Lee WC, Wang M (2013) App recommendation: a contest between satisfaction and temptation. In: Proceedings of the sixth ACM international conference on web search and data mining, pp 395–404
51.
go back to reference Yu S, Krishnapuram B, Rosales R, Rao RB (2011) Bayesian co-training. J Mach Learn Res 12:2649–2680MathSciNetMATH Yu S, Krishnapuram B, Rosales R, Rao RB (2011) Bayesian co-training. J Mach Learn Res 12:2649–2680MathSciNetMATH
52.
go back to reference Zhao L, Lu Z, Pan SJ, Yang Q (2016) Matrix factorization+ for movie recommendation. In: Proceedings of the 25th international joint conference on artificial intelligence, pp 3945–3951 Zhao L, Lu Z, Pan SJ, Yang Q (2016) Matrix factorization+ for movie recommendation. In: Proceedings of the 25th international joint conference on artificial intelligence, pp 3945–3951
53.
go back to reference Zheng L, Noroozi V, Yu PS (2017) Joint deep modeling of users and items using reviews for recommendation. In: Proceedings of the tenth ACM international conference on web search and data mining, pp 425–434 Zheng L, Noroozi V, Yu PS (2017) Joint deep modeling of users and items using reviews for recommendation. In: Proceedings of the tenth ACM international conference on web search and data mining, pp 425–434
54.
go back to reference Zhu H, Liu C, Ge Y, Xiong H, Chen E (2015) Popularity modeling for mobile apps: a sequential approach. IEEE Trans Cybern 45(7):1303–1314CrossRef Zhu H, Liu C, Ge Y, Xiong H, Chen E (2015) Popularity modeling for mobile apps: a sequential approach. IEEE Trans Cybern 45(7):1303–1314CrossRef
55.
go back to reference Zhu H, Xiong H, Ge Y, Chen E (2014) Mobile app recommendations with security and privacy awareness. In: Proceedings of the 20th ACM SIGKDD international conference on Knowledge discovery and data mining, pp 951–960 Zhu H, Xiong H, Ge Y, Chen E (2014) Mobile app recommendations with security and privacy awareness. In: Proceedings of the 20th ACM SIGKDD international conference on Knowledge discovery and data mining, pp 951–960
56.
go back to reference Zhu H, Xiong H, Ge Y, Chen E (2015) Discovery of ranking fraud for mobile apps. IEEE Trans Knowl Data Eng 27(1):74–87CrossRef Zhu H, Xiong H, Ge Y, Chen E (2015) Discovery of ranking fraud for mobile apps. IEEE Trans Knowl Data Eng 27(1):74–87CrossRef
57.
go back to reference Zong L, Zhang X, Zhao L, Yu H, Zhao Q (2017) Multi-view clustering via multi-manifold regularized non-negative matrix factorization. Neural Netw 88:74–89CrossRef Zong L, Zhang X, Zhao L, Yu H, Zhao Q (2017) Multi-view clustering via multi-manifold regularized non-negative matrix factorization. Neural Netw 88:74–89CrossRef
Metadata
Title
CAMAR: a broad learning based context-aware recommender for mobile applications
Authors
Tingting Liang
Lifang He
Chun-Ta Lu
Liang Chen
Haochao Ying
Philip S. Yu
Jian Wu
Publication date
14-03-2020
Publisher
Springer London
Published in
Knowledge and Information Systems / Issue 8/2020
Print ISSN: 0219-1377
Electronic ISSN: 0219-3116
DOI
https://doi.org/10.1007/s10115-020-01440-9

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