Search Results for author: Xiaoli Z. Fern

Found 21 papers, 2 papers with code

Text Counterfactuals via Latent Optimization and Shapley-Guided Search

1 code implementation EMNLP 2021 Quintin Pope, Xiaoli Z. Fern

We study the problem of generating counterfactual text for a classifier as a means for understanding and debugging classification.

counterfactual Counterfactual Explanation +2

The Devils in the Point Clouds: Studying the Robustness of Point Cloud Convolutions

no code implementations19 Jan 2021 Xingyi Li, Wenxuan Wu, Xiaoli Z. Fern, Li Fuxin

This paper investigates different variants of PointConv, a convolution network on point clouds, to examine their robustness to input scale and rotation changes.

Semantic Segmentation

Relation Extraction with Explanation

no code implementations ACL 2020 Hamed Shahbazi, Xiaoli Z. Fern, Reza Ghaeini, Prasad Tadepalli

Recent neural models for relation extraction with distant supervision alleviate the impact of irrelevant sentences in a bag by learning importance weights for the sentences.

Relation Relation Extraction +1

Saliency Learning: Teaching the Model Where to Pay Attention

1 code implementation NAACL 2019 Reza Ghaeini, Xiaoli Z. Fern, Hamed Shahbazi, Prasad Tadepalli

Deep learning has emerged as a compelling solution to many NLP tasks with remarkable performances.

Attentional Multi-Reading Sarcasm Detection

no code implementations9 Sep 2018 Reza Ghaeini, Xiaoli Z. Fern, Prasad Tadepalli

We also study the behavior of the proposed model to provide explanations for the model's decisions.

Sarcasm Detection

Joint Neural Entity Disambiguation with Output Space Search

no code implementations COLING 2018 Hamed Shahbazi, Xiaoli Z. Fern, Reza Ghaeini, Chao Ma, Rasha Obeidat, Prasad Tadepalli

In this paper, we present a novel model for entity disambiguation that combines both local contextual information and global evidences through Limited Discrepancy Search (LDS).

Entity Disambiguation

DR-BiLSTM: Dependent Reading Bidirectional LSTM for Natural Language Inference

no code implementations NAACL 2018 Reza Ghaeini, Sadid A. Hasan, Vivek Datla, Joey Liu, Kathy Lee, Ashequl Qadir, Yuan Ling, Aaditya Prakash, Xiaoli Z. Fern, Oladimeji Farri

Instead, we propose a novel dependent reading bidirectional LSTM network (DR-BiLSTM) to efficiently model the relationship between a premise and a hypothesis during encoding and inference.

Natural Language Inference

Weakly-supervised Dictionary Learning

no code implementations5 Feb 2018 Zeyu You, Raviv Raich, Xiaoli Z. Fern, Jinsub Kim

The performance of the proposed model is demonstrated on both synthetic and real-world data.

Denoising Dictionary Learning +3

Discriminative Clustering with Relative Constraints

no code implementations30 Dec 2014 Yuanli Pei, Xiaoli Z. Fern, Rómer Rosales, Teresa Vania Tjahja

Experimental results demonstrate: 1) the usefulness of relative constraints, in particular when don't know answers are considered; 2) the improved performance of the proposed method over state-of-the-art methods that utilize either relative or pairwise constraints; and 3) the robustness of our method in the presence of noisy constraints, such as those provided by human judgement.

Clustering

Dynamic Programming for Instance Annotation in Multi-instance Multi-label Learning

no code implementations14 Nov 2014 Anh T. Pham, Raviv Raich, Xiaoli Z. Fern

To reduce labeling cost, instead of labeling every instance, a group of instances (bag) is labeled by a single bag label.

Activity Recognition Multi-Label Learning

Active Metric Learning from Relative Comparisons

no code implementations15 Sep 2014 Sicheng Xiong, Rómer Rosales, Yuanli Pei, Xiaoli Z. Fern

This work focuses on active learning of distance metrics from relative comparison information.

Active Learning Metric Learning

Novelty Detection Under Multi-Instance Multi-Label Framework

no code implementations25 Nov 2013 Qi Lou, Raviv Raich, Forrest Briggs, Xiaoli Z. Fern

Contrary to the common assumption in MIML that each instance in a bag belongs to one of the known classes, in novelty detection, we focus on the scenario where bags may contain novel-class instances.

Novelty Detection Object +1

Multi-Label Classifier Chains for Bird Sound

no code implementations22 Apr 2013 Forrest Briggs, Xiaoli Z. Fern, Jed Irvine

Bird sound data collected with unattended microphones for automatic surveys, or mobile devices for citizen science, typically contain multiple simultaneously vocalizing birds of different species.

General Classification Multi-Label Classification +1

Budgeted Optimization with Concurrent Stochastic-Duration Experiments

no code implementations NeurIPS 2011 Javad Azimi, Alan Fern, Xiaoli Z. Fern

This paper defines a novel problem formulation with the following important extensions: 1) allowing for concurrent experiments; 2) allowing for stochastic experiment durations; and 3) placing constraints on both the total number of experiments and the total experimental time.

Inverting Grice's Maxims to Learn Rules from Natural Language Extractions

no code implementations NeurIPS 2011 Mohammad S. Sorower, Janardhan R. Doppa, Walker Orr, Prasad Tadepalli, Thomas G. Dietterich, Xiaoli Z. Fern

However, unlike standard approaches to missing data, in this setting we know that facts are more likely to be missing from the text in cases where the reader can infer them from the facts that are mentioned combined with the domain knowledge.

Batch Bayesian Optimization via Simulation Matching

no code implementations NeurIPS 2010 Javad Azimi, Alan Fern, Xiaoli Z. Fern

Bayesian optimization methods are often used to optimize unknown functions that are costly to evaluate.

Bayesian Optimization

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