Search Results for author: Shiqi Zhang

Found 37 papers, 2 papers with code

Label-Enhanced Hierarchical Contextualized Representation for Sequential Metaphor Identification

no code implementations EMNLP 2021 Shuqun Li, Liang Yang, Weidong He, Shiqi Zhang, Jingjie Zeng, Hongfei Lin

At the sentence level, we leverage the metaphor information of words that except the target word in the sentence to strengthen the reasoning ability of our model via a novel label-enhanced contextualized representation.

Language Modelling Sentence

A Survey of Optimization-based Task and Motion Planning: From Classical To Learning Approaches

no code implementations3 Apr 2024 Zhigen Zhao, Shuo Cheng, Yan Ding, Ziyi Zhou, Shiqi Zhang, Danfei Xu, Ye Zhao

Task and Motion Planning (TAMP) integrates high-level task planning and low-level motion planning to equip robots with the autonomy to effectively reason over long-horizon, dynamic tasks.

Motion Planning Task and Motion Planning

Unrestricted Global Phase Bias-Aware Single-channel Speech Enhancement with Conformer-based Metric GAN

no code implementations13 Feb 2024 Shiqi Zhang, Zheng Qiu, Daiki Takeuchi, Noboru Harada, Shoji Makino

With the rapid development of neural networks in recent years, the ability of various networks to enhance the magnitude spectrum of noisy speech in the single-channel speech enhancement domain has become exceptionally outstanding.

Speech Enhancement

ORLA*: Mobile Manipulator-Based Object Rearrangement with Lazy A*

no code implementations24 Sep 2023 Kai Gao, Yan Ding, Shiqi Zhang, Jingjin Yu

Effectively performing object rearrangement is an essential skill for mobile manipulators, e. g., setting up a dinner table or organizing a desk.

Object

Seeing-Eye Quadruped Navigation with Force Responsive Locomotion Control

no code implementations8 Sep 2023 David Defazio, Eisuke Hirota, Shiqi Zhang

The controller ensures stable walking, and the force estimator enables the robot to respond to the external forces from the human.

Reinforcement Learning (RL)

Integrating Action Knowledge and LLMs for Task Planning and Situation Handling in Open Worlds

1 code implementation27 May 2023 Yan Ding, Xiaohan Zhang, Saeid Amiri, Nieqing Cao, Hao Yang, Andy Kaminski, Chad Esselink, Shiqi Zhang

Each situation corresponds to a state instance wherein a robot is potentially unable to complete a task using a solution that normally works.

World Knowledge

LLM+P: Empowering Large Language Models with Optimal Planning Proficiency

1 code implementation22 Apr 2023 Bo Liu, Yuqian Jiang, Xiaohan Zhang, Qiang Liu, Shiqi Zhang, Joydeep Biswas, Peter Stone

LLM+P takes in a natural language description of a planning problem, then returns a correct (or optimal) plan for solving that problem in natural language.

Zero-shot Generalization

Learning Visualization Policies of Augmented Reality for Human-Robot Collaboration

no code implementations13 Nov 2022 Kishan Chandan, Jack Albertson, Shiqi Zhang

In human-robot collaboration domains, augmented reality (AR) technologies have enabled people to visualize the state of robots.

Unity

Robot Task Planning and Situation Handling in Open Worlds

no code implementations4 Oct 2022 Yan Ding, Xiaohan Zhang, Saeid Amiri, Nieqing Cao, Hao Yang, Chad Esselink, Shiqi Zhang

This paper introduces a novel algorithm (COWP) for open-world task planning and situation handling that dynamically augments the robot's action knowledge with task-oriented common sense.

Common Sense Reasoning Robot Task Planning +1

Multi-Spatio-temporal Fusion Graph Recurrent Network for Traffic forecasting

no code implementations3 May 2022 Wei Zhao, Shiqi Zhang, Bing Zhou, Bei Wang

The network proposes a data-driven weighted adjacency matrix generation method to compensate for real-time spatial dependencies not reflected by the predefined adjacency matrix.

Management Time Series Analysis

RMFGP: Rotated Multi-fidelity Gaussian process with Dimension Reduction for High-dimensional Uncertainty Quantification

no code implementations11 Apr 2022 Jiahao Zhang, Shiqi Zhang, Guang Lin

This paper proposes a new dimension reduction framework based on rotated multi-fidelity Gaussian process regression and a Bayesian active learning scheme when the available precise observations are insufficient.

Active Learning Dimensionality Reduction +2

STCGAT: A Spatio-temporal Causal Graph Attention Network for traffic flow prediction in Intelligent Transportation Systems

no code implementations21 Mar 2022 Wei Zhao, Shiqi Zhang, Bing Zhou, Bei Wang

Existing methods are usually based on graph neural networks using predefined spatial adjacency graphs of traffic networks to model spatial dependencies, ignoring the dynamic correlation of relationships between road nodes.

An Operator-Theoretic Approach to Robust Event-Triggered Control of Network Systems with Frequency-Domain Uncertainties

no code implementations4 Mar 2022 Shiqi Zhang, Zhongkui Li

In both cases, quantitative relationships among the parameters of the controllers, the Laplacian matrix of the network topology, and the robustness against aperiodic event triggering and frequency-domain uncertainties are unveiled.

Robust Event-Based Control: Bridge Time-Domain Triggering and Frequency-Domain Uncertainties

no code implementations4 Mar 2022 Shiqi Zhang, Zhongkui Li

It is revealed that in static or dynamic event triggering mechanisms, the sampling errors are images of affine operators acting on the sampled outputs.

Reasoning with Scene Graphs for Robot Planning under Partial Observability

no code implementations21 Feb 2022 Saeid Amiri, Kishan Chandan, Shiqi Zhang

Robot planning in partially observable domains is difficult, because a robot needs to estimate the current state and plan actions at the same time.

Task and Situation Structures for Service Agent Planning

no code implementations27 Jul 2021 Hao Yang, Tavan Eftekhar, Chad Esselink, Yan Ding, Shiqi Zhang

Everyday tasks are characterized by their varieties and variations, and frequently are not clearly specified to service agents.

Effective and Scalable Clustering on Massive Attributed Graphs

no code implementations7 Feb 2021 Renchi Yang, Jieming Shi, Yin Yang, Keke Huang, Shiqi Zhang, Xiaokui Xiao

Given a graph G where each node is associated with a set of attributes, and a parameter k specifying the number of output clusters, k-attributed graph clustering (k-AGC) groups nodes in G into k disjoint clusters, such that nodes within the same cluster share similar topological and attribute characteristics, while those in different clusters are dissimilar.

Attribute Clustering +1

A Survey of Knowledge-based Sequential Decision Making under Uncertainty

no code implementations19 Aug 2020 Shiqi Zhang, Mohan Sridharan

Reasoning with declarative knowledge (RDK) and sequential decision-making (SDM) are two key research areas in artificial intelligence.

Decision Making Decision Making Under Uncertainty +2

Adaptive Dialog Policy Learning with Hindsight and User Modeling

no code implementations SIGDIAL (ACL) 2020 Yan Cao, Keting Lu, Xiaoping Chen, Shiqi Zhang

Reinforcement learning methods have been used to compute dialog policies from language-based interaction experiences.

Reinforcement Learning (RL)

Guiding Robot Exploration in Reinforcement Learning via Automated Planning

no code implementations23 Apr 2020 Yohei Hayamizu, Saeid Amiri, Kishan Chandan, Keiki Takadama, Shiqi Zhang

Reinforcement learning (RL) enables an agent to learn from trial-and-error experiences toward achieving long-term goals; automated planning aims to compute plans for accomplishing tasks using action knowledge.

reinforcement-learning Reinforcement Learning (RL)

AutoEG: Automated Experience Grafting for Off-Policy Deep Reinforcement Learning

no code implementations22 Apr 2020 Keting Lu, Shiqi Zhang, Xiaoping Chen

First, we develop an algorithm, called Experience Grafting (EG), to enable RL agents to reorganize segments of the few high-quality trajectories from the experience pool to generate many synthetic trajectories while retaining the quality.

reinforcement-learning Reinforcement Learning (RL)

iCORPP: Interleaved Commonsense Reasoning and Probabilistic Planning on Robots

no code implementations18 Apr 2020 Shiqi Zhang, Piyush Khandelwal, Peter Stone

Robot sequential decision-making in the real world is a challenge because it requires the robots to simultaneously reason about the current world state and dynamics, while planning actions to accomplish complex tasks.

Decision Making Management

Bridging Commonsense Reasoning and Probabilistic Planning via a Probabilistic Action Language

no code implementations31 Jul 2019 Yi Wang, Shiqi Zhang, Joohyung Lee

In this paper, we present a unified framework to integrate icorpp's reasoning and planning components.

Decision Making

Learning and Reasoning for Robot Sequential Decision Making under Uncertainty

no code implementations16 Jan 2019 Saeid Amiri, Mohammad Shokrolah Shirazi, Shiqi Zhang

The key contribution of this work is a robot SDM framework, called LCORPP, that supports the simultaneous capabilities of supervised learning for passive state estimation, automated reasoning with declarative human knowledge, and planning under uncertainty toward achieving long-term goals.

Decision Making Decision Making Under Uncertainty

Integrating Task-Motion Planning with Reinforcement Learning for Robust Decision Making in Mobile Robots

no code implementations21 Nov 2018 Yuqian Jiang, Fangkai Yang, Shiqi Zhang, Peter Stone

In the outer loop, the plan is executed, and the robot learns from the execution experience via model-free RL, to further improve its task-motion plans.

Decision Making Motion Planning +2

Robot Representation and Reasoning with Knowledge from Reinforcement Learning

no code implementations28 Sep 2018 Keting Lu, Shiqi Zhang, Peter Stone, Xiaoping Chen

In this work, we integrate logical-probabilistic KRR with model-based RL, enabling agents to simultaneously reason with declarative knowledge and learn from interaction experiences.

reinforcement-learning Reinforcement Learning (RL)

Sentence Weighting for Neural Machine Translation Domain Adaptation

no code implementations COLING 2018 Shiqi Zhang, Deyi Xiong

In this paper, we propose a new sentence weighting method for the domain adaptation of neural machine translation.

Domain Adaptation Language Modelling +3

Task Planning in Robotics: an Empirical Comparison of PDDL-based and ASP-based Systems

no code implementations23 Apr 2018 Yuqian Jiang, Shiqi Zhang, Piyush Khandelwal, Peter Stone

PDDL is designed for task planning, and PDDL-based planners are widely used for a variety of planning problems.

Robot Task Planning

REBA: A Refinement-Based Architecture for Knowledge Representation and Reasoning in Robotics

no code implementations17 Aug 2015 Mohan Sridharan, Michael Gelfond, Shiqi Zhang, Jeremy Wyatt

This paper describes an architecture for robots that combines the complementary strengths of probabilistic graphical models and declarative programming to represent and reason with logic-based and probabilistic descriptions of uncertainty and domain knowledge.

KR$^3$: An Architecture for Knowledge Representation and Reasoning in Robotics

no code implementations5 May 2014 Shiqi Zhang, Mohan Sridharan, Michael Gelfond, Jeremy Wyatt

This paper describes an architecture that combines the complementary strengths of declarative programming and probabilistic graphical models to enable robots to represent, reason with, and learn from, qualitative and quantitative descriptions of uncertainty and knowledge.

Combining Answer Set Programming and POMDPs for Knowledge Representation and Reasoning on Mobile Robots

no code implementations29 Jul 2013 Shiqi Zhang, Mohan Sridharan

For widespread deployment in domains characterized by partial observability, non-deterministic actions and unforeseen changes, robots need to adapt sensing, processing and interaction with humans to the tasks at hand.

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