Search Results for author:
Found 42 papers, 24 papers with code
Query Performance Prediction: From Ad-hoc to Conversational Search
The QPP task is to predict the retrieval quality of a search system for a query without relevance judgments.
Generating Synthetic Documents for Cross-Encoder Re-Rankers: A Comparative Study of ChatGPT and Human Experts
We introduce a new dataset, ChatGPT-RetrievalQA, and compare the effectiveness of models fine-tuned on LLM-generated and human-generated data.
On the Impact of Outlier Bias on User Clicks
We therefore propose an outlier-aware click model that accounts for both outlier and position bias, called outlier-aware position-based model ( OPBM).
Exploiting Simulated User Feedback for Conversational Search: Ranking, Rewriting, and Beyond
To this end, we propose a user simulator-based framework for multi-turn interactions with a variety of mixed-initiative CS systems.
Market-Aware Models for Efficient Cross-Market Recommendation
We consider the cross-market recommendation (CMR) task, which involves recommendation in a low-resource target market using data from a richer, auxiliary source market.
Experiments on Generalizability of BERTopic on Multi-Domain Short Text
We further analyze the performance of the HDBSCAN clustering algorithm utilized by BERTopic and find that it classifies a majority of the documents as outliers.
Towards Confidence-aware Calibrated Recommendation
Calibration ensures that the distribution of recommended item categories is consistent with the user's historical data.
IGLU 2022: Interactive Grounded Language Understanding in a Collaborative Environment at NeurIPS 2022
Starting from a very young age, humans acquire new skills and learn how to solve new tasks either by imitating the behavior of others or by following provided natural language instructions.
Experiments on Generalizability of User-Oriented Fairness in Recommender Systems
In this paper, we re-produce a user-oriented fairness study and provide extensive experiments to analyze the dependency of their proposed method on various fairness and recommendation aspects, including the recommendation domain, nature of the base ranking model, and user grouping method.
Interactive Grounded Language Understanding in a Collaborative Environment: IGLU 2021
The primary goal of the competition is to approach the problem of how to build interactive agents that learn to solve a task while provided with grounded natural language instructions in a collaborative environment.
Understanding User Satisfaction with Task-oriented Dialogue Systems
What is the influence of user experience on the user satisfaction rating of TDS as opposed to, or in addition to, utility?
Evaluating Mixed-initiative Conversational Search Systems via User Simulation
Clarifying the underlying user information need by asking clarifying questions is an important feature of modern conversational search system.
Mental Disorders on Online Social Media Through the Lens of Language and Behaviour: Analysis and Visualisation
As for emotional expression, we observe that affected users tend to share emotions more regularly than control individuals on average.
Towards Building Economic Models of Conversational Search
Various conceptual and descriptive models of conversational search have been proposed in the literature -- while useful, they do not provide insights into how interaction between the agent and user would change in response to the costs and benefits of the different interactions.
A Systematic Analysis on the Impact of Contextual Information on Point-of-Interest Recommendation
The major contributions of this paper are: (i) providing an extensive survey of context-aware location recommendation (ii) quantifying and analyzing the impact of different contextual information (e. g., social, temporal, spatial, and categorical) in the POI recommendation on available baselines and two new linear and non-linear models, that can incorporate all the major contextual information into a single recommendation model, and (iii) evaluating the considered models using two well-known real-world datasets.
Leveraging Social Influence based on Users Activity Centers for Point-of-Interest Recommendation
To this end, we model social influence based on two factors: similarities between users in terms of common check-ins and the friendships between them.
Understanding and Mitigating the Effect of Outliers in Fair Ranking
We formalize outlierness in a ranking, show that outliers are present in realistic datasets, and present the results of an eye-tracking study, showing that users scanning order and the exposure of items are influenced by the presence of outliers.
NeurIPS 2021 Competition IGLU: Interactive Grounded Language Understanding in a Collaborative Environment
Starting from a very young age, humans acquire new skills and learn how to solve new tasks either by imitating the behavior of others or by following provided natural language instructions.
The Impact of User Demographics and Task Types on Cross-App Mobile Search
Recent developments in the mobile app industry have resulted in various types of mobile apps, each targeting a different need and a specific audience.
BERT for Target Apps Selection: Analyzing the Diversity and Performance of BERT in Unified Mobile Search
A unified mobile search framework aims to identify the mobile apps that can satisfy a user's information need and route the user's query to them.
Keyword Extraction for Improved Document Retrieval in Conversational Search
Recent research has shown that mixed-initiative conversational search, based on the interaction between users and computers to clarify and improve a query, provides enormous advantages.
Analysing Mixed Initiatives and Search Strategies during Conversational Search
In this paper, we present a model for conversational search -- from which we instantiate different observed conversational search strategies, where the agent elicits: (i) Feedback-First, or (ii) Feedback-After.
Cross-Market Product Recommendation
We introduce and formalize the problem of cross-market product recommendation, i. e., market adaptation.
Building and Evaluating Open-Domain Dialogue Corpora with Clarifying Questions
Enabling open-domain dialogue systems to ask clarifying questions when appropriate is an important direction for improving the quality of the system response.
Ranking Clarifying Questions Based on Predicted User Engagement
This research demonstrates the potential for ranking clarification panes based on lexical information only and can serve as a first neural baseline for future research to improve on.
User Engagement Prediction for Clarification in Search
Prompting the user for clarification in a search session can be very beneficial to the system as the user's explicit feedback helps the system improve retrieval massively.
MICROS: Mixed-Initiative ConveRsatiOnal Systems Workshop
The 1st edition of the workshop on Mixed-Initiative ConveRsatiOnal Systems (MICROS@ECIR2021) aims at investigating and collecting novel ideas and contributions in the field of conversational systems.
Context-Aware Target Apps Selection and Recommendation for Enhancing Personal Mobile Assistants
Here we focus on context-aware models to leverage the rich contextual information available to mobile devices.
On Estimating the Training Cost of Conversational Recommendation Systems
Conversational recommendation systems have recently gain a lot of attention, as users can continuously interact with the system over multiple conversational turns.
ConvAI3: Generating Clarifying Questions for Open-Domain Dialogue Systems (ClariQ)
The main aim of the conversational systems is to return an appropriate answer in response to the user requests.
Longformer for MS MARCO Document Re-ranking Task
Two step document ranking, where the initial retrieval is done by a classical information retrieval method, followed by neural re-ranking model, is the new standard.
Analysing the Effect of Clarifying Questions on Document Ranking in Conversational Search
Recent research on conversational search highlights the importance of mixed-initiative in conversations.
A Tool for Conducting User Studies on Mobile Devices
With the ever-growing interest in the area of mobile information retrieval and the ongoing fast development of mobile devices and, as a consequence, mobile apps, an active research area lies in studying users' behavior and search queries users submit on mobile devices.
Joint Geographical and Temporal Modeling based on Matrix Factorization for Point-of-Interest Recommendation
Previous studies show that incorporating contextual information such as geographical and temporal influences is necessary to improve POI recommendation by addressing the data sparsity problem.
Harnessing Evolution of Multi-Turn Conversations for Effective Answer Retrieval
With the improvements in speech recognition and voice generation technologies over the last years, a lot of companies have sought to develop conversation understanding systems that run on mobile phones or smart home devices through natural language interfaces.
A Joint Two-Phase Time-Sensitive Regularized Collaborative Ranking Model for Point of Interest Recommendation
In this article, we propose a two-phase CR algorithm that incorporates the geographical influence of POIs and is regularized based on the variance of POIs popularity and users' activities over time.
LGLMF: Local Geographical based Logistic Matrix Factorization Model for POI Recommendation
To address these problems, a POI recommendation method is proposed in this paper based on a Local Geographical Model, which considers both users' and locations' points of view.
Category-Aware Location Embedding for Point-of-Interest Recommendation
With the recent advances of neural models, much work has sought to leverage neural networks to learn neural embeddings in a pre-training phase that achieve an improved representation of POIs and consequently a better recommendation.
Asking Clarifying Questions in Open-Domain Information-Seeking Conversations
In this paper, we formulate the task of asking clarifying questions in open-domain information-seeking conversational systems.
ANTIQUE: A Non-Factoid Question Answering Benchmark
Despite the importance of the task, the community still feels the significant lack of large-scale non-factoid question answering collections with real questions and comprehensive relevance judgments.
Venue Suggestion Using Social-Centric Scores
These scores model each user by focusing on the different types of information extracted from venues that they have previously visited.
Graph-Based Semi-Supervised Conditional Random Fields For Spoken Language Understanding Using Unaligned Data
We experiment graph-based Semi-Supervised Learning (SSL) of Conditional Random Fields (CRF) for the application of Spoken Language Understanding (SLU) on unaligned data.
