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Detecting and intercepting malicious requests are one of the most widely used ways against attacks in the network security. Most existing detecting approaches, including matching blacklist characters and machine learning algorithms have all…

Machine Learning · Computer Science 2020-11-13 Wenhao Li , Bincheng Zhang , Jiajie Zhang

Information systems enable many organizational processes in every industry. The efficiencies and effectiveness in the use of information technologies create an unintended byproduct: misuse by existing users or somebody impersonating them -…

Cryptography and Security · Computer Science 2020-07-24 Eduardo Lopez , Kamran Sartipi

Dialogue intent classification aims to identify the underlying purpose or intent of a user's input in a conversation. Current intent classification systems encounter considerable challenges, primarily due to the vast number of possible…

Computation and Language · Computer Science 2024-12-23 Gyutae Park , Ingeol Baek , ByeongJeong Kim , Joongbo Shin , Hwanhee Lee

Out-of-domain (OOD) input detection is vital in a task-oriented dialogue system since the acceptance of unsupported inputs could lead to an incorrect response of the system. This paper proposes OutFlip, a method to generate out-of-domain…

Computation and Language · Computer Science 2021-05-13 DongHyun Choi , Myeong Cheol Shin , EungGyun Kim , Dong Ryeol Shin

Systems like Voice-command based conversational agents are characterized by a pre-defined set of skills or intents to perform user specified tasks. In the course of time, newer intents may emerge requiring retraining. However, the newer…

Computation and Language · Computer Science 2022-05-05 Ankan Mullick , Sukannya Purkayastha , Pawan Goyal , Niloy Ganguly

Intent detection is a crucial component of modern conversational systems, since accurately identifying user intent at the beginning of a conversation is essential for generating effective responses. Recent efforts have focused on studying…

Computation and Language · Computer Science 2025-09-09 Liang Zhang , Yuan Li , Shijie Zhang , Zheng Zhang , Xitong Li

Face recognition has achieved great progress owing to the fast development of the deep neural network in the past a few years. As an important part of deep neural networks, a number of the loss functions have been proposed which…

Computer Vision and Pattern Recognition · Computer Science 2020-02-05 Xin Wei , Hui Wang , Bryan Scotney , Huan Wan

Utterance-level intent detection and token-level slot filling are two key tasks for natural language understanding (NLU) in task-oriented systems. Most existing approaches assume that only a single intent exists in an utterance. However,…

Artificial Intelligence · Computer Science 2021-08-27 Fengyu Cai , Wanhao Zhou , Fei Mi , Boi Faltings

The performance of deep neural networks improves with more annotated data. The problem is that the budget for annotation is limited. One solution to this is active learning, where a model asks human to annotate data that it perceived as…

Computer Vision and Pattern Recognition · Computer Science 2019-05-10 Donggeun Yoo , In So Kweon

The dynamics of gradient-based training in neural networks often exhibit nontrivial structures; hence, understanding them remains a central challenge in theoretical machine learning. In particular, a concept of feature unlearning, in which…

Machine Learning · Computer Science 2026-02-10 Shota Imai , Sota Nishiyama , Masaaki Imaizumi

Precise estimation of uncertainty in predictions for AI systems is a critical factor in ensuring trust and safety. Deep neural networks trained with a conventional method are prone to over-confident predictions. In contrast to Bayesian…

Machine Learning · Computer Science 2021-01-05 Theodoros Tsiligkaridis

We propose a transfer learning-based solution for the problem of multiple class novelty detection. In particular, we propose an end-to-end deep-learning based approach in which we investigate how the knowledge contained in an external,…

Computer Vision and Pattern Recognition · Computer Science 2019-03-07 Pramuditha Perera , Vishal M. Patel

This study introduces a novel methodology for fault detection and cause identification within the Tennessee Eastman Process (TEP) by integrating a Bidirectional Long Short-Term Memory (BiLSTM) neural network with an Integrated Attention…

Artificial Intelligence · Computer Science 2024-08-02 Mohammad Ali Labbaf Khaniki , Alireza Golkarieh , Houman Nouri , Mohammad Manthouri

Conversational systems are of primary interest in the AI community. Chatbots are increasingly being deployed to provide round-the-clock support and to increase customer engagement. Many of the commercial bot building frameworks follow a…

Computation and Language · Computer Science 2021-01-19 Ajay Chatterjee , Shubhashis Sengupta

Dialogue Topic Segmentation (DTS) aims to divide dialogues into coherent segments. DTS plays a crucial role in various NLP downstream tasks, but suffers from chronic problems: data shortage, labeling ambiguity, and incremental complexity of…

Computation and Language · Computer Science 2025-05-28 Seungmin Lee , Yongsang Yoo , Minhwa Jung , Min Song

Detecting out-of-scope user utterances is essential for task-oriented dialogues and intent classification. Current methodologies face difficulties with the unpredictable distribution of outliers and often rely on assumptions about data…

Computation and Language · Computer Science 2024-06-03 Hossam M. Zawbaa , Wael Rashwan , Sourav Dutta , Haytham Assem

Machine unlearning is a prominent and challenging field, driven by regulatory demands for user data deletion and heightened privacy awareness. Existing approaches involve retraining model or multiple finetuning steps for each deletion…

Machine Learning · Computer Science 2024-08-07 Sangamesh Kodge , Gobinda Saha , Kaushik Roy

Understanding human intent in complex multi-turn interactions remains a fundamental challenge in human-computer interaction and behavioral analysis. While existing intent recognition datasets focus mainly on single utterances or simple…

Artificial Intelligence · Computer Science 2026-04-15 Shufang Lin , Muyang Chen , Xiabing Zhou , Rongrong Zhang , Dayou Zhang , Fangxin Wang

Intent discovery is a crucial task in natural language processing, and it is increasingly relevant for various of industrial applications. Identifying novel, unseen intents from user inputs remains one of the biggest challenges in this…

Computation and Language · Computer Science 2023-12-11 Daniele Comi , Dimitrios Christofidellis , Pier Francesco Piazza , Matteo Manica

Detecting Out-of-Domain (OOD) or unknown intents from user queries is essential in a task-oriented dialog system. Traditional softmax-based confidence scores are susceptible to the overconfidence issue. In this paper, we propose a simple…

Computation and Language · Computer Science 2022-10-18 Yanan Wu , Zhiyuan Zeng , Keqing He , Yutao Mou , Pei Wang , Yuanmeng Yan , Weiran Xu
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