no code implementations • 13 Feb 2024 • Jin Li, Shoujin Wang, Qi Zhang, Longbing Cao, Fang Chen, Xiuzhen Zhang, Dietmar Jannach, Charu C. Aggarwal
However, emerging vulnerabilities in RS have catalyzed a paradigm shift towards Trustworthy RS (TRS).
no code implementations • 8 Feb 2024 • Adil Mukhtar, Dietmar Jannach, Franz Wotawa
In these cases, it therefore remains challenging to exactly reproduce the results in the current research literature.
1 code implementation • 2 Feb 2024 • Artun Boz, Wouter Zorgdrager, Zoe Kotti, Jesse Harte, Panos Louridas, Dietmar Jannach, Marios Fragkoulis
We conduct extensive experiments on three datasets and explore a large variety of configurations, including different language models and baseline recommendation models, to obtain a comprehensive picture of the performance of each approach.
no code implementations • 27 Dec 2023 • Faisal Shehzad, Dietmar Jannach
In session-based recommendation settings, a recommender system has to base its suggestions on the user interactions that are ob served in an ongoing session.
no code implementations • 11 Dec 2023 • Eduardo Witter, Ingrid Nunes, Dietmar Jannach
In this paper, we propose the use of team-related features to improve the performance of predictions that are helpful to build code reviewer recommenders, with our target predictions being the identification of reviewers that would participate in a review and the provided amount of feedback.
1 code implementation • 17 Sep 2023 • Jesse Harte, Wouter Zorgdrager, Panos Louridas, Asterios Katsifodimos, Dietmar Jannach, Marios Fragkoulis
Sequential recommendation problems have received increasing attention in research during the past few years, leading to the inception of a large variety of algorithmic approaches.
no code implementations • 23 Aug 2023 • Alvise De Biasio, Nicolò Navarin, Dietmar Jannach
In this work, we survey the existing literature on what we call Economic Recommender Systems based on a systematic review approach that helped us identify 133 relevant papers.
no code implementations • 22 Aug 2023 • Xiaocong Chen, Siyu Wang, Julian McAuley, Dietmar Jannach, Lina Yao
Offline reinforcement learning empowers agents to glean insights from offline datasets and deploy learned policies in online settings.
no code implementations • 14 Aug 2023 • Zehui Wang, Wolfram Höpken, Dietmar Jannach
In this domain, recommender systems are for example tasked with providing personalized recommendations for transportation, accommodation, points-of-interest (POIs), etc.
no code implementations • 2 Aug 2023 • Anastasiia Klimashevskaia, Dietmar Jannach, Mehdi Elahi, Christoph Trattner
We furthermore critically discuss today's literature, where we observe that the research is almost entirely based on computational experiments and on certain assumptions regarding the practical effects of including long-tail items in the recommendations.
no code implementations • 17 Apr 2023 • Siyu Wang, Xiaocong Chen, Dietmar Jannach, Lina Yao
Reinforcement learning-based recommender systems have recently gained popularity.
no code implementations • 10 Mar 2023 • Koby Bibas, Oren Sar Shalom, Dietmar Jannach
In this work, we propose a novel approach that can leverage both item side-information and labeled complementary item pairs to generate effective complementary recommendations for cold items, i. e., for items for which no co-purchase statistics yet exist.
no code implementations • 6 Feb 2023 • Pablo Castells, Dietmar Jannach
Personalized recommendations have become a common feature of modern online services, including most major e-commerce sites, media platforms and social networks.
no code implementations • 21 Oct 2022 • Koby Bibas, Oren Sar Shalom, Dietmar Jannach
A series of experiments on datasets from e-commerce and social media demonstrates that considering collaborative signals helps to significantly improve the performance of the main task of image classification by up to 9. 1%.
no code implementations • 19 Oct 2022 • Dietmar Jannach
Traditionally, recommender systems research predominantly focuses on developing machine learning algorithms that aim to predict which content is relevant for individual users.
1 code implementation • 7 Sep 2022 • Ahtsham Manzoor, Dietmar Jannach
Conversational recommender systems (CRS) are interactive agents that support their users in recommendation-related goals through multi-turn conversations.
no code implementations • 25 Aug 2022 • Dietmar Jannach
Conversational recommender systems aim to interactively support online users in their information search and decision-making processes in an intuitive way.
1 code implementation • 8 Aug 2022 • Ahtsham Manzoor, Dietmar Jannach
A recent example of such a dataset is INSPIRED, which consists of recommendation dialogs for sociable conversational recommendation, where items and entities were annotated using automatic keyword or pattern matching techniques.
1 code implementation • 23 May 2022 • Yashar Deldjoo, Dietmar Jannach, Alejandro Bellogin, Alessandro Difonzo, Dario Zanzonelli
In this survey, we first review the fundamental concepts and notions of fairness that were put forward in the area in the recent past.
no code implementations • 17 Mar 2022 • Dietmar Jannach, Li Chen
Animated avatars, which look and talk like humans, are iconic visions of the future of AI-powered systems.
1 code implementation • 10 Mar 2022 • Nada Ghanem, Stephan Leitner, Dietmar Jannach
Our simulations show that a hybrid strategy that puts more weight on consumer utility but without ignoring profitability considerations leads to the highest cumulative profit in the long run.
no code implementations • 2 Mar 2022 • Vito Walter Anelli, Alejandro Bellogín, Tommaso Di Noia, Dietmar Jannach, Claudio Pomo
Moreover, we find that for none of the accuracy measurements any of the considered neural models led to the best performance.
no code implementations • 10 Nov 2021 • Tommaso Di Noia, Francesco Donini, Dietmar Jannach, Fedelucio Narducci, Claudio Pomo
With this work, we complement empirical research with a theoretical, domain-independent model of conversational recommendation.
1 code implementation • 6 Sep 2021 • Ahtsham Manzoor, Dietmar Jannach
One main challenge is that these generated responses both have to be appropriate for the given dialog context and must be grammatically and semantically correct.
no code implementations • 25 Aug 2021 • Gediminas Adomavicius, Dietmar Jannach, Stephan Leitner, Jingjing Zhang
Today's research in recommender systems is largely based on experimental designs that are static in a sense that they do not consider potential longitudinal effects of providing recommendations to users.
no code implementations • 6 Nov 2020 • Mathias Jesse, Dietmar Jannach
These systems thereby influence which information is easily accessible to us and thus affect our decision-making processes though the automated selection and ranking of the presented content.
1 code implementation • 6 Nov 2020 • Sara Latifi, Noemi Mauro, Dietmar Jannach
Recommender systems are designed to help users in situations of information overload.
no code implementations • 5 Nov 2020 • Rami Cohen, Oren Sar Shalom, Dietmar Jannach, Amihood Amir
Due to the advances in deep learning, visually-aware recommender systems (RS) have recently attracted increased research interest.
1 code implementation • 17 Aug 2020 • Andres Ferraro, Dietmar Jannach, Xavier Serra
Specifically, we analyze to what extent algorithms of different types may lead to concentration effects over time.
1 code implementation • 23 Jul 2020 • Maurizio Ferrari Dacrema, Federico Parroni, Paolo Cremonesi, Dietmar Jannach
In recent years, algorithm research in the area of recommender systems has shifted from matrix factorization techniques and their latent factor models to neural approaches.
no code implementations • 22 Jun 2020 • Gabriel de Souza P. Moreira, Dietmar Jannach, Adilson Marques da Cunha
We describe a hybrid meta-architecture -- the CHAMELEON -- for session-based news recommendation that is able to leverage a variety of information types using Recurrent Neural Networks.
no code implementations • 15 Jun 2020 • Ingrid Nunes, Dietmar Jannach
With the recent advances in the field of artificial intelligence, an increasing number of decision-making tasks are delegated to software systems.
no code implementations • 1 Apr 2020 • Dietmar Jannach, Ahtsham Manzoor, Wanling Cai, Li Chen
Recommender systems are software applications that help users to find items of interest in situations of information overload.
1 code implementation • 18 Nov 2019 • Maurizio Ferrari Dacrema, Simone Boglio, Paolo Cremonesi, Dietmar Jannach
In our analysis, we discuss common issues in today's research practice, which, despite the many papers that are published on the topic, have apparently led the field to a certain level of stagnation.
1 code implementation • 28 Oct 2019 • Malte Ludewig, Noemi Mauro, Sara Latifi, Dietmar Jannach
However, previous research indicates that today's complex neural recommendation methods are not always better than comparably simple algorithms in terms of prediction accuracy.
no code implementations • 22 Aug 2019 • Dietmar Jannach, Michael Jugovac
Recommender Systems are nowadays successfully used by all major web sites (from e-commerce to social media) to filter content and make suggestions in a personalized way.
3 code implementations • 16 Jul 2019 • Maurizio Ferrari Dacrema, Paolo Cremonesi, Dietmar Jannach
Deep learning techniques have become the method of choice for researchers working on algorithmic aspects of recommender systems.
2 code implementations • 12 Jul 2019 • Gabriel de Souza P. Moreira, Dietmar Jannach, Adilson Marques da Cunha
A particular problem in that context is that online readers are often anonymous, which means that this personalization can only be based on the last few recorded interactions with the user, a setting named session-based recommendation.
no code implementations • 1 May 2019 • Himan Abdollahpouri, Gediminas Adomavicius, Robin Burke, Ido Guy, Dietmar Jannach, Toshihiro Kamishima, Jan Krasnodebski, Luiz Pizzato
Recommender systems are personalized information access applications; they are ubiquitous in today's online environment, and effective at finding items that meet user needs and tastes.
2 code implementations • 15 Apr 2019 • Gabriel de Souza Pereira Moreira, Dietmar Jannach, Adilson Marques da Cunha
The recommendation of news is often considered to be challenging, since the relevance of an article for a user can depend on a variety of factors, including the user's short-term reading interests, the reader's context, or the recency or popularity of an article.
no code implementations • 2 Apr 2019 • Patrick Rodler, Dietmar Jannach, Konstantin Schekotihin, Philipp Fleiss
Tool support for the localization and repair of faults within knowledge bases of such systems can therefore be essential for their practical success.
3 code implementations • 26 Mar 2018 • Malte Ludewig, Dietmar Jannach
In many real-world applications, however, such long-term profiles often do not exist and recommendations therefore have to be made solely based on the observed behavior of a user during an ongoing session.
3 code implementations • 23 Feb 2018 • Massimo Quadrana, Paolo Cremonesi, Dietmar Jannach
In this work we review existing works that consider information from such sequentially-ordered user- item interaction logs in the recommendation process.
no code implementations • 1 Aug 2017 • Dietmar Jannach, Malte Ludewig
Deep learning methods have led to substantial progress in various application fields of AI, and in recent years a number of proposals were made to improve recommender systems with artificial neural networks.
no code implementations • 25 Jul 2017 • Dietmar Jannach, Gediminas Adomavicius
Academic research in the field of recommender systems mainly focuses on the problem of maximizing the users' utility by trying to identify the most relevant items for each user.