Search Results for author: Xinxin Zhang

Found 18 papers, 3 papers with code

WAE_RN: Integrating Wasserstein Autoencoder and Relational Network for Text Sequence

no code implementations CCL 2020 Xinxin Zhang, Xiaoming Liu, Guan Yang, Fangfang Li

In spite of the success of pre-trained language model in many NLP tasks, the learned text representation only contains the correlation among the words in the sentence itself and ignores the implicit relationship between arbitrary tokens in the sequence.

Language Modeling Language Modelling +1

Enhancing Reset Control Phase with Lead Shaping Filters: Applications to Precision Motion Systems

no code implementations19 Mar 2025 Xinxin Zhang, S. Hassan HosseinNia

{The design achieves either an increased phase margin while maintaining gain properties or improved gain without sacrificing phase margin, compared to reset control without the shaping filter.}

Higher-Order Sinusoidal Input Describing Functions for Open-Loop and Closed-Loop Reset Control with Application to Mechatronics Systems

no code implementations17 Dec 2024 Xinxin Zhang, S. Hassan HosseinNia

Finally, the utility of the proposed methods is demonstrated through case studies that analyze and compare the performance of three controllers: a PID controller, a reset controller, and a shaped reset controller on a precision motion stage.

Using Large Language Models for Parametric Shape Optimization

no code implementations11 Dec 2024 Xinxin Zhang, Zhuoqun Xu, Guangpu Zhu, Chien Ming Jonathan Tay, Yongdong Cui, Boo Cheong Khoo, Lailai Zhu

Recent advanced large language models (LLMs) have showcased their emergent capability of in-context learning, facilitating intelligent decision-making through natural language prompts without retraining.

Decision Making In-Context Learning

Enhancing the Reliability of Closed-Loop Describing Function Analysis for Reset Control Applied to Precision Motion Systems

no code implementations30 Nov 2024 Xinxin Zhang, S. Hassan HosseinNia

To address this, a shaped reset control strategy is proposed, which incorporates a shaping filter to tune reset actions and reduce high-order harmonics.

Unified Embedding Alignment for Open-Vocabulary Video Instance Segmentation

1 code implementation10 Jul 2024 Hao Fang, Peng Wu, Yawei Li, Xinxin Zhang, Xiankai Lu

We discover that the domain gap between the VLM features (e. g., CLIP) and the instance queries and the underutilization of temporal consistency are two central causes.

Instance Segmentation Semantic Segmentation +2

The Analysis and the Performance of the Parallel-Partial Reset Control System

no code implementations23 Jun 2024 Xinxin Zhang, S. Hassan HosseinNia

We develop frequency response analysis methods for both the open-loop and closed-loop parallel-partial reset systems.

Fine-Grained Urban Flow Inference with Multi-scale Representation Learning

no code implementations14 Jun 2024 Shilu Yuan, Dongfeng Li, Wei Liu, Xinxin Zhang, Meng Chen, Junjie Zhang, Yongshun Gong

In order to effectively learn multi-scale information across time and space, we propose an effective fine-grained urban flow inference model called UrbanMSR, which uses self-supervised contrastive learning to obtain dynamic multi-scale representations of neighborhood-level and city-level geographic information, and fuses multi-scale representations to improve fine-grained accuracy.

Contrastive Learning Fine-Grained Urban Flow Inference +1

RedCore: Relative Advantage Aware Cross-modal Representation Learning for Missing Modalities with Imbalanced Missing Rates

no code implementations16 Dec 2023 Jun Sun, Xinxin Zhang, Shoukang Han, Yu-Ping Ruan, Taihao Li

Multimodal learning is susceptible to modality missing, which poses a major obstacle for its practical applications and, thus, invigorates increasing research interest.

Representation Learning

A Reinforcement Learning Framework for Online Speaker Diarization

no code implementations21 Feb 2023 Baihan Lin, Xinxin Zhang

Our approach considers speaker diarization as a fully online learning problem of the speaker recognition task, where the agent receives no pretraining from any training set before deployment, and learns to detect speaker identity on the fly through reward feedbacks.

Decision Making Domain Adaptation +6

RTN: Reinforced Transformer Network for Coronary CT Angiography Vessel-level Image Quality Assessment

no code implementations13 Jul 2022 Yiting Lu, Jun Fu, Xin Li, Wei Zhou, Sen Liu, Xinxin Zhang, Congfu Jia, Ying Liu, Zhibo Chen

Therefore, we propose a Progressive Reinforcement learning based Instance Discarding module (termed as PRID) to progressively remove quality-irrelevant/negative instances for CCTA VIQA.

Image Quality Assessment Multiple Instance Learning

Steady-state nonlinearity of open-loop reset systems

no code implementations21 Jun 2022 Marcin B. Kaczmarek, Xinxin Zhang, S. Hassan HosseinNia

In this paper, we introduce a new representation for open-loop reset systems.

Frequency Response Analysis for Reset Control Systems: Application to Predict Precision of Motion Systems

no code implementations1 Jun 2022 Xinxin Zhang, Marcin B Kaczmarek, S. Hassan HosseinNia

These methods decompose the frequency responses of reset systems into base-linear and nonlinear components.

Geodesic Paths for Image Segmentation with Implicit Region-based Homogeneity Enhancement

no code implementations16 Aug 2020 Da Chen, Jian Zhu, Xinxin Zhang, Ming-Lei Shu, Laurent D. Cohen

Minimal paths are regarded as a powerful and efficient tool for boundary detection and image segmentation due to its global optimality and the well-established numerical solutions such as fast marching method.

Boundary Detection Image Segmentation +2

Speaker Diarization as a Fully Online Learning Problem in MiniVox

1 code implementation8 Jun 2020 Baihan Lin, Xinxin Zhang

We proposed a novel machine learning framework to conduct real-time multi-speaker diarization and recognition without prior registration and pretraining in a fully online learning setting.

Self-Supervised Learning speaker-diarization +1

Hierarchical Optimization Time Integration for CFL-rate MPM Stepping

1 code implementation18 Nov 2019 Xinlei Wang, Minchen Li, Yu Fang, Xinxin Zhang, Ming Gao, Min Tang, Danny M. Kaufman, Chenfanfu Jiang

We propose Hierarchical Optimization Time Integration (HOT) for efficient implicit time-stepping of the Material Point Method (MPM) irrespective of simulated materials and conditions.

Graphics

Tree Recognition APP of Mount Tai Based on CNN

no code implementations23 Jan 2019 Zhihao Cao, Xinxin Zhang

Mount Tai has abundant sunshine, abundant rainfall and favorable climatic conditions, forming dense vegetation with various kinds of trees.

Cultural Vocal Bursts Intensity Prediction

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