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In this paper, we study the surprising impact that truncating text embeddings has on downstream performance. We consistently observe across 6 state-of-the-art text encoders and 26 downstream tasks, that randomly removing up to 50% of…

Machine Learning · Computer Science 2025-10-08 Sotaro Takeshita , Yurina Takeshita , Daniel Ruffinelli , Simone Paolo Ponzetto

Control policies, trained using the Deep Reinforcement Learning, have been recently shown to be vulnerable to adversarial attacks introducing even very small perturbations to the policy input. The attacks proposed so far have been designed…

Machine Learning · Computer Science 2019-08-02 Alessio Russo , Alexandre Proutiere

We propose a novel word embedding pre-training approach that exploits writing errors in learners' scripts. We compare our method to previous models that tune the embeddings based on script scores and the discrimination between correct and…

Computation and Language · Computer Science 2019-07-05 Youmna Farag , Marek Rei , Ted Briscoe

The decentralized nature of federated learning makes detecting and defending against adversarial attacks a challenging task. This paper focuses on backdoor attacks in the federated learning setting, where the goal of the adversary is to…

Machine Learning · Computer Science 2019-12-04 Ziteng Sun , Peter Kairouz , Ananda Theertha Suresh , H. Brendan McMahan

Natural language processing models based on neural networks are vulnerable to adversarial examples. These adversarial examples are imperceptible to human readers but can mislead models to make the wrong predictions. In a black-box setting,…

Computation and Language · Computer Science 2023-03-14 Hai Zhu , Qingyang Zhao , Yuren Wu

In this work, we present an approach based on combining string kernels and word embeddings for automatic essay scoring. String kernels capture the similarity among strings based on counting common character n-grams, which are a low-level…

Computation and Language · Computer Science 2018-07-09 Mădălina Cozma , Andrei M. Butnaru , Radu Tudor Ionescu

Instant Search is a paradigm where a search system retrieves answers on the fly while typing. The na\"ive implementation of an Instant Search system would hit the search back-end for results each time a user types a key, imposing a very…

Computation and Language · Computer Science 2022-03-21 Ravneet Singh Arora , Sreejith Menon , Ayush Jain , Nehil Jain

Text classification is a very classic NLP task, but it has two prominent shortcomings: On the one hand, text classification is deeply domain-dependent. That is, a classifier trained on the corpus of one domain may not perform so well in…

Computation and Language · Computer Science 2022-10-28 Zilin Yuan , Yinghui Li , Yangning Li , Rui Xie , Wei Wu , Hai-Tao Zheng

Research on adversarial attacks are becoming widely popular in the recent years. One of the unexplored areas where prior research is lacking is the effect of adversarial attacks on code-mixed data. Therefore, in the present work, we have…

Computation and Language · Computer Science 2021-11-02 Sourya Dipta Das , Ayan Basak , Soumil Mandal , Dipankar Das

Determining the job is suitable for a student or a person looking for work based on their job's descriptions such as knowledge and skills that are difficult, as well as how employers must find ways to choose the candidates that match the…

Computation and Language · Computer Science 2020-02-03 Tin Van Huynh , Kiet Van Nguyen , Ngan Luu-Thuy Nguyen , Anh Gia-Tuan Nguyen

In this research, we improve upon the current state of the art in entity retrieval by re-ranking the result list using graph embeddings. The paper shows that graph embeddings are useful for entity-oriented search tasks. We demonstrate…

Information Retrieval · Computer Science 2020-05-07 Emma J. Gerritse , Faegheh Hasibi , Arjen P. de Vries

The impact of research papers, typically measured in terms of citation counts, depends on several factors, including the reputation of the authors, journals, and institutions, in addition to the quality of the scientific work. In this…

Digital Libraries · Computer Science 2024-07-30 Adilson Vital , Filipi N. Silva , Osvaldo N. Oliveira , Diego R. Amancio

Large Language Models (LLMs) are seeing significant adoption in every type of organization due to their exceptional generative capabilities. However, LLMs are found to be vulnerable to various adversarial attacks, particularly prompt…

Cryptography and Security · Computer Science 2024-10-30 Md. Ahsan Ayub , Subhabrata Majumdar

The task of learning to rank has been widely studied by the machine learning community, mainly due to its use and great importance in information retrieval, data mining, and natural language processing. Therefore, ranking accurately and…

Artificial Intelligence · Computer Science 2021-02-17 Nathalia Q. Ascenção , Luis C. S. Afonso , Danilo Colombo , Luciano Oliveira , João P. Papa

Context:With the advancement of artificial intelligence (AI) technology and applications, numerous AI models have been developed, leading to the emergence of open-source model hosting platforms like Hugging Face (HF). Thanks to these…

Software Engineering · Computer Science 2024-08-07 Hao Qin , Mingyang Li , Junjie Wang , Qing Wang

Autonomous agents must often detect affordances: the set of behaviors enabled by a situation. Affordance detection is particularly helpful in domains with large action spaces, allowing the agent to prune its search space by avoiding futile…

Artificial Intelligence · Computer Science 2018-09-03 Nancy Fulda , Daniel Ricks , Ben Murdoch , David Wingate

It has been proved that deep neural networks are facing a new threat called backdoor attacks, where the adversary can inject backdoors into the neural network model through poisoning the training dataset. When the input containing some…

Cryptography and Security · Computer Science 2021-03-16 Chuanshuai Chen , Jiazhu Dai

In recent years, there has been an exponential growth in the number of complex documents and texts that require a deeper understanding of machine learning methods to be able to accurately classify texts in many applications. Many machine…

Machine Learning · Computer Science 2020-05-21 Kamran Kowsari , Kiana Jafari Meimandi , Mojtaba Heidarysafa , Sanjana Mendu , Laura E. Barnes , Donald E. Brown

Textual adversarial attacks expose the vulnerabilities of text classifiers and can be used to improve their robustness. Existing context-aware methods solely consider the gold label probability and use the greedy search when searching an…

Computation and Language · Computer Science 2022-08-18 Huijun Liu , Jie Yu , Shasha Li , Jun Ma , Bin Ji

Recent studies have revealed a security threat to natural language processing (NLP) models, called the Backdoor Attack. Victim models can maintain competitive performance on clean samples while behaving abnormally on samples with a specific…

Computation and Language · Computer Science 2021-03-30 Wenkai Yang , Lei Li , Zhiyuan Zhang , Xuancheng Ren , Xu Sun , Bin He