Search Results for author: Zhaocheng Liu

Found 23 papers, 4 papers with code

Modular Neural Network Policies for Learning In-Flight Object Catching with a Robot Hand-Arm System

no code implementations21 Dec 2023 Wenbin Hu, Fernando Acero, Eleftherios Triantafyllidis, Zhaocheng Liu, Zhibin Li

We present a modular framework designed to enable a robot hand-arm system to learn how to catch flying objects, a task that requires fast, reactive, and accurately-timed robot motions.

Object Trajectory Prediction

RObotic MAnipulation Network (ROMAN) $\unicode{x2013}$ Hybrid Hierarchical Learning for Solving Complex Sequential Tasks

no code implementations30 Jun 2023 Eleftherios Triantafyllidis, Fernando Acero, Zhaocheng Liu, Zhibin Li

In this work, we present a Hybrid Hierarchical Learning framework, the Robotic Manipulation Network (ROMAN), to address the challenge of solving multiple complex tasks over long time horizons in robotic manipulation.

Behavioural cloning

Multi-Epoch Learning for Deep Click-Through Rate Prediction Models

no code implementations31 May 2023 Zhaocheng Liu, Zhongxiang Fan, Jian Liang, Dongying Kong, Han Li

However, it is still unknown whether a multi-epoch training paradigm could achieve better results, as the best performance is usually achieved by one-epoch training.

Click-Through Rate Prediction Data Augmentation

Deep Stable Multi-Interest Learning for Out-of-distribution Sequential Recommendation

no code implementations12 Apr 2023 Qiang Liu, Zhaocheng Liu, Zhenxi Zhu, Shu Wu, Liang Wang

However, none of existing multi-interest recommendation models consider the Out-Of-Distribution (OOD) generalization problem, in which interest distribution may change.

Sequential Recommendation

Deep Stable Representation Learning on Electronic Health Records

1 code implementation3 Sep 2022 Yingtao Luo, Zhaocheng Liu, Qiang Liu

The unstable correlation between procedures and diagnoses existed in the training distribution can cause spurious correlation between historical EHR and future diagnosis.

Disease Prediction Representation Learning

Improving Multi-Interest Network with Stable Learning

no code implementations14 Jul 2022 Zhaocheng Liu, Yingtao Luo, Di Zeng, Qiang Liu, Daqing Chang, Dongying Kong, Zhi Chen

Modeling users' dynamic preferences from historical behaviors lies at the core of modern recommender systems.

Recommendation Systems

LPFS: Learnable Polarizing Feature Selection for Click-Through Rate Prediction

1 code implementation1 Jun 2022 Yi Guo, Zhaocheng Liu, Jianchao Tan, Chao Liao, Sen yang, Lei Yuan, Dongying Kong, Zhi Chen, Ji Liu

When training is finished, some gates are exact zero, while others are around one, which is particularly favored by the practical hot-start training in the industry, due to no damage to the model performance before and after removing the features corresponding to exact-zero gates.

Click-Through Rate Prediction feature selection

Slimmable Video Codec

no code implementations13 May 2022 Zhaocheng Liu, Luis Herranz, Fei Yang, Saiping Zhang, Shuai Wan, Marta Mrak, Marc Górriz Blanch

Neural video compression has emerged as a novel paradigm combining trainable multilayer neural networks and machine learning, achieving competitive rate-distortion (RD) performances, but still remaining impractical due to heavy neural architectures, with large memory and computational demands.

Video Compression

Deep Active Learning for Text Classification with Diverse Interpretations

no code implementations15 Aug 2021 Qiang Liu, Yanqiao Zhu, Zhaocheng Liu, Yufeng Zhang, Shu Wu

To train high-performing models with the minimal annotation cost, active learning is proposed to select and label the most informative samples, yet it is still challenging to measure informativeness of samples used in DNNs.

Active Learning Informativeness +3

DNN2LR: Automatic Feature Crossing for Credit Scoring

no code implementations24 Feb 2021 Qiang Liu, Zhaocheng Liu, Haoli Zhang, Yuntian Chen, Jun Zhu

Accordingly, we can design an automatic feature crossing method to find feature interactions in DNN, and use them as cross features in LR.

Feature Engineering

DNN2LR: Interpretation-inspired Feature Crossing for Real-world Tabular Data

no code implementations22 Aug 2020 Zhaocheng Liu, Qiang Liu, Haoli Zhang, Yuntian Chen

Simple classifiers, e. g., Logistic Regression (LR), are globally interpretable, but not powerful enough to model complex nonlinear interactions among features in tabular data.

Deep Active Learning by Model Interpretability

no code implementations23 Jul 2020 Qiang Liu, Zhaocheng Liu, Xiaofang Zhu, Yeliang Xiu

In this paper, inspired by piece-wise linear interpretability in DNN, we introduce the linearly separable regions of samples to the problem of active learning, and propose a novel Deep Active learning approach by Model Interpretability (DAMI).

Active Learning Clustering +1

Simplification of Graph Convolutional Networks: A Matrix Factorization-based Perspective

no code implementations17 Jul 2020 Qiang Liu, Haoli Zhang, Zhaocheng Liu

Moreover, we have also conducted experiments on a typical task of graph embedding, i. e., community detection, and the proposed UCMF model outperforms several representative graph embedding models.

Community Detection Distributed Computing +2

Multifunctional Meta-Optic Systems: Inversely Designed with Artificial Intelligence

no code implementations30 Jun 2020 Dayu Zhu, Zhaocheng Liu, Lakshmi Raju, Andrew S. Kim, Wenshan Cai

Flat optics foresees a new era of ultra-compact optical devices, where metasurfaces serve as the foundation.

An Empirical Study on Feature Discretization

no code implementations27 Apr 2020 Qiang Liu, Zhaocheng Liu, Haoli Zhang

When dealing with continuous numeric features, we usually adopt feature discretization.

Deep Interaction Machine: A Simple but Effective Model for High-order Feature Interactions

1 code implementation1 Jan 2020 Feng Yu, Zhaocheng Liu, Qiang Liu, Haoli Zhang, Shu Wu, Liang Wang

IM is an efficient and exact implementation of high-order FM, whose time complexity linearly grows with the order of interactions and the number of feature fields.

Click-Through Rate Prediction Feature Engineering

Deep Interaction Machine: A Simple but Effective Model for High-order Feature Interactions

no code implementations CIKM 2020 Feng Yu, Zhaocheng Liu, Qiang Liu, Haoli Zhang, Shu Wu, Liang Wang

IM is an efficient and exact implementation of high-order FM, whose time complexity linearly grows with the order of interactions and the number of feature fields.

Click-Through Rate Prediction Feature Engineering

Automatically Learning Feature Crossing from Model Interpretation for Tabular Data

no code implementations25 Sep 2019 Zhaocheng Liu, Qiang Liu, Haoli Zhang

Automatically feature generation is a major topic of automated machine learning.

CPM-sensitive AUC for CTR prediction

no code implementations23 Apr 2019 Zhaocheng Liu, Guangxue Yin

This is because there is a gap between offline AUC and online CPM.

Click-Through Rate Prediction

A Generative Model for Inverse Design of Metamaterials

no code implementations25 May 2018 Zhaocheng Liu, Dayu Zhu, Sean P. Rodrigues, Kyu-Tae Lee, Wenshan Cai

The advent of two-dimensional metamaterials in recent years has ushered in a revolutionary means to manipulate the behavior of light on the nanoscale.

Simulating the Ising Model with a Deep Convolutional Generative Adversarial Network

no code implementations13 Oct 2017 Zhaocheng Liu, Sean P. Rodrigues, Wenshan Cai

The deep learning framework is witnessing expansive growth into diverse applications such as biological systems, human cognition, robotics, and the social sciences, thanks to its immense ability to extract essential features from complicated systems.

Disordered Systems and Neural Networks

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