Search Results for author: Qiwei Han

Found 9 papers, 1 papers with code

AiGen-FoodReview: A Multimodal Dataset of Machine-Generated Restaurant Reviews and Images on Social Media

no code implementations16 Jan 2024 Alessandro Gambetti, Qiwei Han

The paper contributes by open-sourcing the dataset and releasing fake review detectors, recommending its use in unimodal and multimodal fake review detection tasks, and evaluating linguistic and visual features in synthetic versus authentic data.

Decision Making

Dissecting Medical Referral Mechanisms in Health Services: Role of Physician Professional Networks

no code implementations4 Dec 2023 Regina de Brito Duarte, Qiwei Han, Claudia Soares

Medical referrals between primary care physicians (PC) and specialist care (SC) physicians profoundly impact patient care regarding quality, satisfaction, and cost.

Management

Extreme Multilabel Classification for Specialist Doctor Recommendation with Implicit Feedback and Limited Patient Metadata

no code implementations21 Aug 2023 Filipa Valdeira, Stevo Racković, Valeria Danalachi, Qiwei Han, Cláudia Soares

Our research focuses on medical referrals and aims to predict recommendations in different specialties of physicians for both new patients and those with a consultation history.

Recommendation Systems

Beyond Rankings: Exploring the Impact of SERP Features on Organic Click-through Rates

no code implementations31 May 2023 Erik Fubel, Niclas Michael Groll, Patrick Gundlach, Qiwei Han, Maximilian Kaiser

Search Engine Result Pages (SERPs) serve as the digital gateways to the vast expanse of the internet.

Interpretable Deep Learning for Forecasting Online Advertising Costs: Insights from the Competitive Bidding Landscape

no code implementations11 Feb 2023 Fynn Oldenburg, Qiwei Han, Maximilian Kaiser

As advertisers increasingly shift their budgets toward digital advertising, forecasting advertising costs is essential for making budget plans to optimize marketing campaign returns.

Clustering Feature Importance +4

Combat AI With AI: Counteract Machine-Generated Fake Restaurant Reviews on Social Media

1 code implementation10 Feb 2023 Alessandro Gambetti, Qiwei Han

Recent advances in generative models such as GPT may be used to fabricate indistinguishable fake customer reviews at a much lower cost, thus posing challenges for social media platforms to detect these machine-generated fake reviews.

Online Advertising Revenue Forecasting: An Interpretable Deep Learning Approach

no code implementations16 Nov 2021 Max Würfel, Qiwei Han, Maximilian Kaiser

Online advertising revenues account for an increasing share of publishers' revenue streams, especially for small and medium-sized publishers who depend on the advertisement networks of tech companies such as Google and Facebook.

Time Series Time Series Analysis

Incorporating Domain Knowledge into Health Recommender Systems using Hyperbolic Embeddings

no code implementations14 Jun 2021 Joel Peito, Qiwei Han

In contrast to many other domains, recommender systems in health services may benefit particularly from the incorporation of health domain knowledge, as it helps to provide meaningful and personalised recommendations catering to the individual's health needs.

Recommendation Systems Representation Learning +1

A Hybrid Recommender System for Patient-Doctor Matchmaking in Primary Care

no code implementations9 Aug 2018 Qiwei Han, Mengxin Ji, Inigo Martinez de Rituerto de Troya, Manas Gaur, Leid Zejnilovic

We partner with a leading European healthcare provider and design a mechanism to match patients with family doctors in primary care.

Collaborative Filtering Recommendation Systems

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