Search Results for author: Zhenduo Wang

Found 10 papers, 4 papers with code

FARA: Future-aware Ranking Algorithm for Fairness Optimization

no code implementations26 May 2023 Tao Yang, Zhichao Xu, Zhenduo Wang, Qingyao Ai

However, we find that most existing fair ranking methods adopt greedy algorithms that only optimize rankings for the next immediate session or request.

Exposure Fairness Information Retrieval +1

Reward-free Policy Imitation Learning for Conversational Search

no code implementations17 Apr 2023 Zhenduo Wang, Zhichao Xu, Qingyao Ai

In this paper, we propose a reward-free conversation policy imitation learning framework, which can train a conversation policy without annotated conversation data or manually designed rewards.

Conversational Search Imitation Learning +1

An In-depth Investigation of User Response Simulation for Conversational Search

no code implementations17 Apr 2023 Zhenduo Wang, Zhichao Xu, Qingyao Ai, Vivek Srikumar

Our goal is to supplement existing work with an insightful hand-analysis of unsolved challenges by the baseline and propose our solutions.

Conversational Search Text Generation +1

Zero-shot Clarifying Question Generation for Conversational Search

no code implementations30 Jan 2023 Zhenduo Wang, Yuancheng Tu, Corby Rosset, Nick Craswell, Ming Wu, Qingyao Ai

In this work, we innovatively explore generating clarifying questions in a zero-shot setting to overcome the cold start problem and we propose a constrained clarifying question generation system which uses both question templates and query facets to guide the effective and precise question generation.

Conversational Search Natural Questions +3

Marginal-Certainty-aware Fair Ranking Algorithm

2 code implementations18 Dec 2022 Tao Yang, Zhichao Xu, Zhenduo Wang, Anh Tran, Qingyao Ai

In MCFair, we first develop a ranking objective that includes uncertainty, fairness, and user utility.

Fairness

Simulating and Modeling the Risk of Conversational Search

1 code implementation1 Jan 2022 Zhenduo Wang, Qingyao Ai

These works assume asking clarifying questions is a safe alternative to retrieving results.

Conversational Search

Controlling the Risk of Conversational Search via Reinforcement Learning

1 code implementation15 Jan 2021 Zhenduo Wang, Qingyao Ai

In this work, we propose a risk-aware conversational search agent model to balance the risk of answering user's query and asking clarifying questions.

Conversational Search reinforcement-learning +2

Physical Distance Between Quantum States

1 code implementation13 Jul 2020 Zhenduo Wang, Yijie Wang, Biao Wu

We propose a physical distance between two quantum states.

Quantum Physics

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