Search Results for author: Zichao Li

Found 18 papers, 5 papers with code

Towards Adaptive Residual Network Training: A Neural-ODE Perspective

1 code implementation ICML 2020 chengyu dong, Liyuan Liu, Zichao Li, Jingbo Shang

Serving as a crucial factor, the depth of residual networks balances model capacity, performance, and training efficiency.

Beam Search for Feature Selection

no code implementations8 Mar 2022 Nicolas Fraiman, Zichao Li

In this paper, we present and prove some consistency results about the performance of classification models using a subset of features.

Classification feature selection

Perturbation Deterioration: The Other Side of Catastrophic Overfitting

no code implementations29 Sep 2021 Zichao Li, Liyuan Liu, chengyu dong, Jingbo Shang

While this phenomenon is commonly explained as overfitting, we observe that it is a twin process: not only does the model catastrophic overfits to one type of perturbation, but also the perturbation deteriorates into random noise.

BFClass: A Backdoor-free Text Classification Framework

no code implementations Findings (EMNLP) 2021 Zichao Li, Dheeraj Mekala, chengyu dong, Jingbo Shang

To recognize the poisoned subset, we examine the training samples with these identified triggers as the most suspicious token, and check if removing the trigger will change the poisoned model's prediction.

Backdoor Attack Classification +2

Classification with Nearest Disjoint Centroids

no code implementations21 Sep 2021 Nicolas Fraiman, Zichao Li

In this paper, we develop a new classification method based on nearest centroid, and it is called the nearest disjoint centroid classifier.

Classification feature selection

Can Shape Structure Features Improve Model Robustness Under Diverse Adversarial Settings?

no code implementations ICCV 2021 MingJie Sun, Zichao Li, Chaowei Xiao, Haonan Qiu, Bhavya Kailkhura, Mingyan Liu, Bo Li

Specifically, EdgeNetRob and EdgeGANRob first explicitly extract shape structure features from a given image via an edge detection algorithm.

Edge Detection

Overfitting or Underfitting? Understand Robustness Drop in Adversarial Training

2 code implementations15 Oct 2020 Zichao Li, Liyuan Liu, chengyu dong, Jingbo Shang

Our goal is to understand why the robustness drops after conducting adversarial training for too long.

Biclustering with Alternating K-Means

no code implementations9 Sep 2020 Nicolas Fraiman, Zichao Li

Biclustering is the task of simultaneously clustering the rows and columns of the data matrix into different subgroups such that the rows and columns within a subgroup exhibit similar patterns.

Decomposable Neural Paraphrase Generation

no code implementations ACL 2019 Zichao Li, Xin Jiang, Lifeng Shang, Qun Liu

Paraphrasing exists at different granularity levels, such as lexical level, phrasal level and sentential level.

Paraphrase Generation Unsupervised Domain Adaptation

EditNTS: An Neural Programmer-Interpreter Model for Sentence Simplification through Explicit Editing

1 code implementation ACL 2019 Yue Dong, Zichao Li, Mehdi Rezagholizadeh, Jackie Chi Kit Cheung

We present the first sentence simplification model that learns explicit edit operations (ADD, DELETE, and KEEP) via a neural programmer-interpreter approach.

Machine Translation Text Simplification +1

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