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Xiaofeng Gao

23 accepted papers

2026

GKD-Recruiter: Jointly Modeling Social and Task Heterogeneity for Spatial Crowdsourcing via Graph Knowledge Distillation

ICML 2026poster

Social recruitment offers a solution to worker scarcity in Spatial Crowdsourcing (SC) but faces challenges that are often ignored in traditional Influence Maximization. First, task heterogeneity arising from offline execution constraints breaks the ``interest-implies-participation'' assumption, as s…

Cited by 0SourceScholar
2026

JointScaler: A Hierarchical Multi-Indicator Distribution Forecasting Approach for Uncertainty-Aware Joint Scaling in Cloud Services

IJCAI 2026

Proactive scaling improves cloud resource efficiency by forecasting system-relevant indicators and dynamically provisioning resources to maximize utilization while satisfying quality requirements. Existing approaches forecast service indicators in isolation, ignore forecasting uncertainty, and scale

Cited by 0Scholar
2026

ProCAST: A Projection Framework for Coupled Aggregation Constrained Multivariate Time Series Forecasting

AAAI 2026technical

Aggregated time series are widely used in business and economics, where top-level sequences (e.g., category sales) aggregated from underlying sequences (e.g., individual items) often exhibit clearer trends and are therefore typically the primary focus of forecasting tasks. However, treating top-leve

Cited by 0SourcePDFScholar
2025

Enhancing Masked Time-Series Modeling via Dropping Patches

AAAI 2025technical

This paper explores how to enhance existing masked time-series modeling by randomly dropping sub-sequence level patches of time series. On this basis, a simple yet effective method named DropPatch is proposed, which has two remarkable advantages: 1) It improves the pre-training efficiency by a squar…

2025

MM-Agent: LLM as Agents for Real-world Mathematical Modeling Problem

NeurIPS 2025poster

Mathematical modeling is a cornerstone of scientific discovery and engineering practice, enabling the translation of real-world problems into formal systems across domains such as physics, biology, and economics. Unlike mathematical reasoning, which assumes a predefined formulation, modeling require…

Cited by 0SourcecodeScholar
2025

MatryoshkaKV: Adaptive KV Compression via Trainable Orthogonal Projection

ICLR 2025poster

KV cache has become a *de facto* technique for the inference of large language models (LLMs), where tensors of shape (layer number, head number, sequence length, feature dimension) are introduced to cache historical information for self-attention. As the size of the model and data grows, the KV cac…

Cited by 3SourcePDFScholar
2025

Spatial-Temporal Heterogenous Graph Contrastive Learning for Microservice Workload Prediction

AAAI 2025technical

With the widely adoption of microservice architecture in the cloud computing industry, accurate prediction of workloads, especially CPU cores, can support reasonable resource allocation, thereby optimizing the resource utilization of the system. However, workload prediction is challenging in two dim…

2025

T2V-Turbo-v2: Enhancing Video Model Post-Training through Data, Reward, and Conditional Guidance Design

ICLR 2025poster

In this paper, we focus on enhancing a diffusion-based text-to-video (T2V) model during the post-training phase by distilling a highly capable consistency model from a pretrained T2V model. Our proposed method, T2V-Turbo-v2, introduces a significant advancement by integrating various supervision sig…

Cited by 17SourcePDFScholar
2024

GROUNDHOG: Grounding Large Language Models to Holistic Segmentation

CVPR 2024poster

Most multimodal large language models (MLLMs) learn language-to-object grounding through causal language modeling where grounded objects are captured by bounding boxes as sequences of location tokens. This paradigm lacks pixel-level representations that are important for fine-grained visual understa…

Cited by 47SourcePDFScholar
2024

Mastering Robot Manipulation with Multimodal Prompts through Pretraining and Multi-task Fine-tuning

ICML 2024poster

Prompt-based learning has been demonstrated as a compelling paradigm contributing to large language models' tremendous success (LLMs). Inspired by their success in language tasks, existing research has leveraged LLMs in embodied instruction following and task planning. In this work, we tackle the pr…

Cited by 11SourcePDFScholar
2024

Mixture of Link Predictors on Graphs

NeurIPS 2024poster

Link prediction, which aims to forecast unseen connections in graphs, is a fundamental task in graph machine learning. Heuristic methods, leveraging a range of different pairwise measures such as common neighbors and shortest paths, often rival the performance of vanilla Graph Neural Networks (GNNs)…

2023

ARNOLD: A Benchmark for Language-Grounded Task Learning with Continuous States in Realistic 3D Scenes

ICCV 2023poster

Understanding the continuous states of objects is essential for task learning and planning in the real world. However, most existing task learning benchmarks assume discrete (e.g., binary) object states, which poses challenges for learning complex tasks and transferring learned policy from the simul…

Cited by 29PDFcodeScholar
2023

Alexa Arena: A User-Centric Interactive Platform for Embodied AI

NeurIPS 2023poster

We introduce Alexa Arena, a user-centric simulation platform to facilitate research in building assistive conversational embodied agents. Alexa Arena features multi-room layouts and an abundance of interactable objects. With user-friendly graphics and control mechanisms, the platform supports the de…

2023

Curriculum Multi-Level Learning for Imbalanced Live-Stream Recommendation

IJCAI 2023poster

In large-scale e-commerce live-stream recommendation, streamers are classified into different levels based on their popularity and other metrics for marketing. Several top streamers at the head level occupy a considerable amount of exposure, resulting in an unbalanced data distribution. A unified mo…

Cited by 1SourcePDFScholar
2023

LEMMA: Learning Language-Conditioned Multi-Robot Manipulation

RA-L 2023

Complex manipulation tasks often require robots with complementary capabilities to collaborate. We introduce a benchmark for <underline xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">L</u> anguag <underline xmlns:mml="http://www.w3.org/1998/Math/MathML" xml

Cited by 15SourceScholar
2022

Cross-Task Knowledge Distillation in Multi-Task Recommendation

AAAI 2022technical

Multi-task learning (MTL) has been widely used in recommender systems, wherein predicting each type of user feedback on items (e.g, click, purchase) are treated as individual tasks and jointly trained with a unified model. Our key observation is that the prediction results of each task may contain t…

Cited by 49SourcePDFScholar
2022

DialFRED: Dialogue-Enabled Agents for Embodied Instruction Following

RA-L 2022

Language-guided Embodied AI benchmarks requiring an agent to navigate an environment and manipulate objects typically allow one-way communication: the human user gives a natural language command to the agent, and the agent can only follow the command passively. We present <bold xmlns:mml="http://www

Cited by 90SourcecodeScholar
2022

Show Me What You Can Do: Capability Calibration on Reachable Workspace for Human-Robot Collaboration

RA-L 2022

Aligning humans’ assessment of what a robot can do with its true capability is crucial for establishing a common ground between human and robot partners when they collaborate on a joint task. In this work, we propose an approach to calibrate humans’ estimate of a robot’s reachable workspace through

Cited by 4SourceScholar
2022

Trading Hard Negatives and True Negatives: A Debiased Contrastive Collaborative Filtering Approach

IJCAI 2022poster

Collaborative filtering (CF), as a standard method for recommendation with implicit feedback, tackles a semi-supervised learning problem where most interaction data are unobserved. Such a nature makes existing approaches highly rely on mining negatives for providing correct training signals. However…

Cited by 19SourcePDFScholar
2021

Towards Open-World Recommendation: An Inductive Model-based Collaborative Filtering Approach

ICML 2021spotlight

Recommendation models can effectively estimate underlying user interests and predict one’s future behaviors by factorizing an observed user-item rating matrix into products of two sets of latent factors. However, the user-specific embedding factors can only be learned in a transductive way, making i…

2019

Learning Latent Process from High-Dimensional Event Sequences via Efficient Sampling

NeurIPS 2019poster

We target modeling latent dynamics in high-dimension marked event sequences without any prior knowledge about marker relations. Such problem has been rarely studied by previous works which would have fundamental difficulty to handle the arisen challenges: 1) the high-dimensional markers and unknown…

2017

Learning social affordance grammar from videos: Transferring human interactions to human-robot interactions

ICRA 2017poster

In this paper, we present a general framework for learning social affordance grammar as a spatiotemporal AND-OR graph (ST-AOG) from RGB-D videos of human interactions, and transfer the grammar to humanoids to enable a real-time motion inference for human-robot interaction (HRI). Based on Gibbs sampl…

Cited by 54SourceScholar