The Experts below are selected from a list of 10701 Experts worldwide ranked by ideXlab platform
Philip S Yu - One of the best experts on this subject based on the ideXlab platform.
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hitfraud a broad learning approach for collective fraud detection in heterogeneous information networks
International Conference on Data Mining, 2017Co-Authors: Siim Viidu, Philip S YuAbstract:On electronic game platforms, different payment transactions have different levels of risk. Risk is generally higher for digital goods in e-commerce. However, it differs based on product and its popularity, the offer type (packaged game, virtual currency to a game or Subscription Service), storefront and geography. Existing fraud policies and models make decisions independently for each transaction based on transaction attributes, payment velocities, user characteristics, and other relevant information. However, suspicious transactions may still evade detection and hence we propose a broad learning approach leveraging a graph based perspective to uncover relationships among suspicious transactions, i.e., inter-transaction dependency. Our focus is to detect suspicious transactions by capturing common fraudulent behaviors that would not be considered suspicious when being considered in isolation. In this paper, we present HitFraud that leverages heterogeneous information networks for collective fraud detection by exploring correlated and fast evolving fraudulent behaviors. First, a heterogeneous information network is designed to link entities of interest in the transaction database via different semantics. Then, graph based features are efficiently discovered from the network exploiting the concept of meta-paths, and decisions on frauds are made collectively on test instances. Experiments on real-world payment transaction data from Electronic Arts demonstrate that the prediction performance is effectively boosted by HitFraud with fast convergence.
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hitfraud a broad learning approach for collective fraud detection in heterogeneous information networks
arXiv: Learning, 2017Co-Authors: Siim Viidu, Philip S YuAbstract:On electronic game platforms, different payment transactions have different levels of risk. Risk is generally higher for digital goods in e-commerce. However, it differs based on product and its popularity, the offer type (packaged game, virtual currency to a game or Subscription Service), storefront and geography. Existing fraud policies and models make decisions independently for each transaction based on transaction attributes, payment velocities, user characteristics, and other relevant information. However, suspicious transactions may still evade detection and hence we propose a broad learning approach leveraging a graph based perspective to uncover relationships among suspicious transactions, i.e., inter-transaction dependency. Our focus is to detect suspicious transactions by capturing common fraudulent behaviors that would not be considered suspicious when being considered in isolation. In this paper, we present HitFraud that leverages heterogeneous information networks for collective fraud detection by exploring correlated and fast evolving fraudulent behaviors. First, a heterogeneous information network is designed to link entities of interest in the transaction database via different semantics. Then, graph based features are efficiently discovered from the network exploiting the concept of meta-paths, and decisions on frauds are made collectively on test instances. Experiments on real-world payment transaction data from Electronic Arts demonstrate that the prediction performance is effectively boosted by HitFraud with fast convergence where the computation of meta-path based features is largely optimized. Notably, recall can be improved up to 7.93% and F-score 4.62% compared to baselines.
Kazan Erol - One of the best experts on this subject based on the ideXlab platform.
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The Design Towards a News Aggregator Subscription Service: Results from An Online Experiment
2021Co-Authors: Kazan Erol, Tuunanen Tuure, Ghanbari Hadi, Li MengchengAbstract:The newspaper industry is on a quest to discover sustainable business models. Digital Subscriptions are stable revenue generators for most publishers. That being said, smaller publishers face challenges. By not having the same resource base to offset costs compared to larger ones, small publishers are in a constant state of financial unpredictability. Another persistent problem among them is the high churn rate of Subscriptions (i.e., the cancelation rate), which suggests a value misalignment between readers and Service. New Services like news aggregators may promise publishers a large pool of paying readers, as readers have access to diverse content by different publishers and are willing to pay for pooled news content. But platform fees and the disintermediation of direct customer relationships enact barriers for many publishers. To address these shortcomings, this study conducts an online experiment based on design science research to test the performance of different payment plans for a collaborative news aggregator Service. We identify preliminary design principles for value creation and capture, which can be utilized for designing a commercial and collaborative news aggregator Service
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The Design Towards a Collaborative Subscription Service : The Case of The Finnish Newspaper Industry
'Springer Science and Business Media LLC', 2020Co-Authors: Kazan Erol, Tuunanen TuureAbstract:The newspaper industry is challenged with its business models. To stabilize revenues, publishers opted for digital Subscriptions for generating additional revenue streams. However, digital Subscriptions showcase limited success. News aggregator platforms may promise publishers a pool of paying readers. But platform fees and the loss of customer relationships enact barriers among publishers to join. This study proposes a software prototype based on design science research to address the aforementioned shortcomings by deriving design principles for a collaborative Subscription Service. Building on the strategic alliance, digital platform and business model literature, this research aims to identify design principles that create conducive conditions towards a collaborative Subscription Service among newspaper publisherspeerReviewe
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Strategic Design Towards Platform Collaboration in The Newspaper Industry: A Design Science Research Study
'HICSS Conference Office', 2020Co-Authors: Kazan Erol, Tuunanen Tuure, Ghanbari Hadi, Li Mengcheng, Tumbas SanjaAbstract:The newspaper industry is challenged by unsustainable business models. To stabilize dwindling revenue streams, publishers opted for digital Subscriptions as one avenue for additional revenues. Large publishers have indeed benefited from rising Subscription numbers. However, smaller ones are challenged to achieve similar results. Some of the root causes are high churn rates, adoption costs and the lock-in effects of Subscription Services. News aggregator platforms may promise newspaper publishers a large pool of paying readers. But platform fees and the loss of direct customer relationships enact commercial barriers among publishers. This study applies design science research to address the aforementioned shortcomings by designing a collaborative Subscription Service in a Nordic country. Building on strategy alliance, digital platform and business model literature, this research aims to identify pertinent design principles that create positive conditions for collaborative Subscription Services in the newspaper industry
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Strategic design towards platform collaboration in the newspaper industry : a design science research study
'HICSS Conference Office', 2020Co-Authors: Kazan Erol, Tuunanen Tuure, Ghanbari Hadi, Li Mengcheng, Tumbas SanjaAbstract:The newspaper industry is challenged by unsustainable business models. To stabilize dwindling revenue streams, publishers opted for digital Subscriptions as one avenue for generating additional revenue streams. Large publishers have indeed benefited from rising Subscription numbers. However, smaller publishers are challenged to achieve the same results. Some of the root causes are high churn rates, adoption costs and lock-in effects of Subscription Services. News aggregator platforms may promise newspaper publishers a large pool of paying readers. But platform fees and the loss of direct customer relationships enact commercial barriers among publishers. This study proposes design science research to address the aforementioned shortcomings by designing a collaborative Subscription Service in a Nordic country. Building on strategic alliance, digital platform and business model literature, this research aims to identify pertinent design principles that create positive conditions for a collaborative Subscription Services in the newspaper industry.peerReviewe
Tuunanen Tuure - One of the best experts on this subject based on the ideXlab platform.
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The Design Towards a News Aggregator Subscription Service: Results from An Online Experiment
2021Co-Authors: Kazan Erol, Tuunanen Tuure, Ghanbari Hadi, Li MengchengAbstract:The newspaper industry is on a quest to discover sustainable business models. Digital Subscriptions are stable revenue generators for most publishers. That being said, smaller publishers face challenges. By not having the same resource base to offset costs compared to larger ones, small publishers are in a constant state of financial unpredictability. Another persistent problem among them is the high churn rate of Subscriptions (i.e., the cancelation rate), which suggests a value misalignment between readers and Service. New Services like news aggregators may promise publishers a large pool of paying readers, as readers have access to diverse content by different publishers and are willing to pay for pooled news content. But platform fees and the disintermediation of direct customer relationships enact barriers for many publishers. To address these shortcomings, this study conducts an online experiment based on design science research to test the performance of different payment plans for a collaborative news aggregator Service. We identify preliminary design principles for value creation and capture, which can be utilized for designing a commercial and collaborative news aggregator Service
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The Design Towards a Collaborative Subscription Service : The Case of The Finnish Newspaper Industry
'Springer Science and Business Media LLC', 2020Co-Authors: Kazan Erol, Tuunanen TuureAbstract:The newspaper industry is challenged with its business models. To stabilize revenues, publishers opted for digital Subscriptions for generating additional revenue streams. However, digital Subscriptions showcase limited success. News aggregator platforms may promise publishers a pool of paying readers. But platform fees and the loss of customer relationships enact barriers among publishers to join. This study proposes a software prototype based on design science research to address the aforementioned shortcomings by deriving design principles for a collaborative Subscription Service. Building on the strategic alliance, digital platform and business model literature, this research aims to identify design principles that create conducive conditions towards a collaborative Subscription Service among newspaper publisherspeerReviewe
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Strategic Design Towards Platform Collaboration in The Newspaper Industry: A Design Science Research Study
'HICSS Conference Office', 2020Co-Authors: Kazan Erol, Tuunanen Tuure, Ghanbari Hadi, Li Mengcheng, Tumbas SanjaAbstract:The newspaper industry is challenged by unsustainable business models. To stabilize dwindling revenue streams, publishers opted for digital Subscriptions as one avenue for additional revenues. Large publishers have indeed benefited from rising Subscription numbers. However, smaller ones are challenged to achieve similar results. Some of the root causes are high churn rates, adoption costs and the lock-in effects of Subscription Services. News aggregator platforms may promise newspaper publishers a large pool of paying readers. But platform fees and the loss of direct customer relationships enact commercial barriers among publishers. This study applies design science research to address the aforementioned shortcomings by designing a collaborative Subscription Service in a Nordic country. Building on strategy alliance, digital platform and business model literature, this research aims to identify pertinent design principles that create positive conditions for collaborative Subscription Services in the newspaper industry
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Strategic design towards platform collaboration in the newspaper industry : a design science research study
'HICSS Conference Office', 2020Co-Authors: Kazan Erol, Tuunanen Tuure, Ghanbari Hadi, Li Mengcheng, Tumbas SanjaAbstract:The newspaper industry is challenged by unsustainable business models. To stabilize dwindling revenue streams, publishers opted for digital Subscriptions as one avenue for generating additional revenue streams. Large publishers have indeed benefited from rising Subscription numbers. However, smaller publishers are challenged to achieve the same results. Some of the root causes are high churn rates, adoption costs and lock-in effects of Subscription Services. News aggregator platforms may promise newspaper publishers a large pool of paying readers. But platform fees and the loss of direct customer relationships enact commercial barriers among publishers. This study proposes design science research to address the aforementioned shortcomings by designing a collaborative Subscription Service in a Nordic country. Building on strategic alliance, digital platform and business model literature, this research aims to identify pertinent design principles that create positive conditions for a collaborative Subscription Services in the newspaper industry.peerReviewe
Siim Viidu - One of the best experts on this subject based on the ideXlab platform.
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hitfraud a broad learning approach for collective fraud detection in heterogeneous information networks
International Conference on Data Mining, 2017Co-Authors: Siim Viidu, Philip S YuAbstract:On electronic game platforms, different payment transactions have different levels of risk. Risk is generally higher for digital goods in e-commerce. However, it differs based on product and its popularity, the offer type (packaged game, virtual currency to a game or Subscription Service), storefront and geography. Existing fraud policies and models make decisions independently for each transaction based on transaction attributes, payment velocities, user characteristics, and other relevant information. However, suspicious transactions may still evade detection and hence we propose a broad learning approach leveraging a graph based perspective to uncover relationships among suspicious transactions, i.e., inter-transaction dependency. Our focus is to detect suspicious transactions by capturing common fraudulent behaviors that would not be considered suspicious when being considered in isolation. In this paper, we present HitFraud that leverages heterogeneous information networks for collective fraud detection by exploring correlated and fast evolving fraudulent behaviors. First, a heterogeneous information network is designed to link entities of interest in the transaction database via different semantics. Then, graph based features are efficiently discovered from the network exploiting the concept of meta-paths, and decisions on frauds are made collectively on test instances. Experiments on real-world payment transaction data from Electronic Arts demonstrate that the prediction performance is effectively boosted by HitFraud with fast convergence.
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hitfraud a broad learning approach for collective fraud detection in heterogeneous information networks
arXiv: Learning, 2017Co-Authors: Siim Viidu, Philip S YuAbstract:On electronic game platforms, different payment transactions have different levels of risk. Risk is generally higher for digital goods in e-commerce. However, it differs based on product and its popularity, the offer type (packaged game, virtual currency to a game or Subscription Service), storefront and geography. Existing fraud policies and models make decisions independently for each transaction based on transaction attributes, payment velocities, user characteristics, and other relevant information. However, suspicious transactions may still evade detection and hence we propose a broad learning approach leveraging a graph based perspective to uncover relationships among suspicious transactions, i.e., inter-transaction dependency. Our focus is to detect suspicious transactions by capturing common fraudulent behaviors that would not be considered suspicious when being considered in isolation. In this paper, we present HitFraud that leverages heterogeneous information networks for collective fraud detection by exploring correlated and fast evolving fraudulent behaviors. First, a heterogeneous information network is designed to link entities of interest in the transaction database via different semantics. Then, graph based features are efficiently discovered from the network exploiting the concept of meta-paths, and decisions on frauds are made collectively on test instances. Experiments on real-world payment transaction data from Electronic Arts demonstrate that the prediction performance is effectively boosted by HitFraud with fast convergence where the computation of meta-path based features is largely optimized. Notably, recall can be improved up to 7.93% and F-score 4.62% compared to baselines.
Albert Prior - One of the best experts on this subject based on the ideXlab platform.
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Intermediaries and electronic information : What role for the Subscription agent ?
1998Co-Authors: Albert PriorAbstract:In the past, the Subscription agent's role has been based fundamentally on providing Services to libraries in the acquisition and management of print journals. Agents are in the business of offering added value. With some exceptions, they are not owners of content. They exist to make things easier for their customers by acting as a link between publishers and libraries in the supply of Subscriptions. Libraries use agents as a single source for ordering, paying, dealing with missing and damages issues, delivering journals and the agents have built up a wide range of additional Services to support the core Subscription Service
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intermediaries and electronic information what role for the Subscription agent
IFLA General Conference, 1998Co-Authors: Albert PriorAbstract:In the past, the Subscription agent's role has been based fundamentally on providing Services to libraries in the acquisition and management of print journals. Agents are in the business of offering added value. With some exceptions, they are not owners of content. They exist to make things easier for their customers by acting as a link between publishers and libraries in the supply of Subscriptions. Libraries use agents as a single source for ordering, paying, dealing with missing and damages issues, delivering journals and the agents have built up a wide range of additional Services to support the core Subscription Service
