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Natural question generation (QG) aims to generate questions from a passage and an answer. In this paper, we propose a novel reinforcement learning (RL) based graph-to-sequence (Graph2Seq) model for QG. Our model consists of a Graph2Seq…

Computation and Language · Computer Science 2020-02-17 Yu Chen , Lingfei Wu , Mohammed J. Zaki

Knowledge graph (KG) question generation (QG) aims to generate natural language questions from KGs and target answers. Previous works mostly focus on a simple setting which is to generate questions from a single KG triple. In this work, we…

Computation and Language · Computer Science 2023-05-02 Yu Chen , Lingfei Wu , Mohammed J. Zaki

Automatic construction of relevant Knowledge Bases (KBs) from text, and generation of semantically meaningful text from KBs are both long-standing goals in Machine Learning. In this paper, we present ReGen, a bidirectional generation of…

Computation and Language · Computer Science 2021-08-31 Pierre L. Dognin , Inkit Padhi , Igor Melnyk , Payel Das

Question generation (QG) is a natural language generation task where a model is trained to ask questions corresponding to some input text. Most recent approaches frame QG as a sequence-to-sequence problem and rely on additional features and…

Computation and Language · Computer Science 2021-08-16 Luis Enrico Lopez , Diane Kathryn Cruz , Jan Christian Blaise Cruz , Charibeth Cheng

Considering a collection of RDF triples, the RDF-to-text generation task aims to generate a text description. Most previous methods solve this task using a sequence-to-sequence model or using a graph-based model to encode RDF triples and to…

Computation and Language · Computer Science 2022-03-24 Hanning Gao , Lingfei Wu , Hongyun Zhang , Zhihua Wei , Po Hu , Fangli Xu , Bo Long

Subgraph matching is a fundamental problem in various fields that use graph structured data. Subgraph matching algorithms enumerate all isomorphic embeddings of a query graph q in a data graph G. An important branch of matching algorithms…

Machine Learning · Computer Science 2022-04-01 Hanchen Wang , Ying Zhang , Lu Qin , Wei Wang , Wenjie Zhang , Xuemin Lin

Question generation (QG) attempts to solve the inverse of question answering (QA) problem by generating a natural language question given a document and an answer. While sequence to sequence neural models surpass rule-based systems for QG,…

Computation and Language · Computer Science 2020-11-03 Deepak Gupta , Hardik Chauhan , Akella Ravi Tej , Asif Ekbal , Pushpak Bhattacharyya

Recent question generation (QG) approaches often utilize the sequence-to-sequence framework (Seq2Seq) to optimize the log-likelihood of ground-truth questions using teacher forcing. However, this training objective is inconsistent with…

Computation and Language · Computer Science 2020-11-03 Yuxi Xie , Liangming Pan , Dongzhe Wang , Min-Yen Kan , Yansong Feng

This paper investigates a new task named Conversational Question Generation (CQG) which is to generate a question based on a passage and a conversation history (i.e., previous turns of question-answer pairs). CQG is a crucial task for…

Computation and Language · Computer Science 2019-07-31 Boyuan Pan , Hao Li , Ziyu Yao , Deng Cai , Huan Sun

Question Generation (QG) is an essential component of the automatic intelligent tutoring systems, which aims to generate high-quality questions for facilitating the reading practice and assessments. However, existing QG technologies…

Computation and Language · Computer Science 2020-12-14 Xin Jia , Wenjie Zhou , Xu Sun , Yunfang Wu

In recent times, sequence-to-sequence (seq2seq) models have gained a lot of popularity and provide state-of-the-art performance in a wide variety of tasks such as machine translation, headline generation, text summarization, speech to text…

Machine Learning · Computer Science 2019-04-17 Yaser Keneshloo , Tian Shi , Naren Ramakrishnan , Chandan K. Reddy

Automatic question generation is an important technique that can improve the training of question answering, help chatbots to start or continue a conversation with humans, and provide assessment materials for educational purposes. Existing…

Computation and Language · Computer Science 2019-02-28 Bang Liu , Mingjun Zhao , Di Niu , Kunfeng Lai , Yancheng He , Haojie Wei , Yu Xu

This study aims to optimize the existing retrieval-augmented generation model (RAG) by introducing a graph structure to improve the performance of the model in dealing with complex knowledge reasoning tasks. The traditional RAG model has…

Information Retrieval · Computer Science 2024-11-07 Yuxin Dong , Shuo Wang , Hongye Zheng , Jiajing Chen , Zhenhong Zhang , Chihang Wang

Graph Retrieval-Augmented Generation (Graph RAG) effectively builds a knowledge graph (KG) to connect disparate facts across a large document corpus. However, this broad-view approach often lacks the deep structured reasoning needed for…

Computation and Language · Computer Science 2025-10-27 Jiaoyang Li , Junhao Ruan , Shengwei Tang , Saihan Chen , Kaiyan Chang , Yuan Ge , Tong Xiao , Jingbo Zhu

We introduce a novel schema for sequence to sequence learning with a Deep Q-Network (DQN), which decodes the output sequence iteratively. The aim here is to enable the decoder to first tackle easier portions of the sequences, and then turn…

Computation and Language · Computer Science 2015-11-02 Hongyu Guo

We propose a recurrent neural model that generates natural-language questions from documents, conditioned on answers. We show how to train the model using a combination of supervised and reinforcement learning. After teacher forcing for…

Computation and Language · Computer Science 2017-05-16 Xingdi Yuan , Tong Wang , Caglar Gulcehre , Alessandro Sordoni , Philip Bachman , Sandeep Subramanian , Saizheng Zhang , Adam Trischler

We propose a query-based generative model for solving both tasks of question generation (QG) and question an- swering (QA). The model follows the classic encoder- decoder framework. The encoder takes a passage and a query as input then…

Computation and Language · Computer Science 2018-08-29 Linfeng Song , Zhiguo Wang , Wael Hamza

Automatic question generation (QG) is a useful yet challenging task in NLP. Recent neural network-based approaches represent the state-of-the-art in this task. In this work, we attempt to strengthen them significantly by adopting a holistic…

Computation and Language · Computer Science 2019-09-17 Vishwajeet Kumar , Ganesh Ramakrishnan , Yuan-Fang Li

Retrieval-Augmented Generation (RAG) integrates non-parametric knowledge into Large Language Models (LLMs), typically from unstructured texts and structured graphs. While recent progress has advanced text-based RAG to multi-turn reasoning…

Computation and Language · Computer Science 2025-12-11 Yucan Guo , Miao Su , Saiping Guan , Zihao Sun , Xiaolong Jin , Jiafeng Guo , Xueqi Cheng

Reinforcement learning is well known for its ability to model sequential tasks and learn latent data patterns adaptively. Deep learning models have been widely explored and adopted in regression and classification tasks. However, deep…

Machine Learning · Computer Science 2025-06-17 Thanveer Shaik , Xiaohui Tao , Haoran Xie , Lin Li , Jianming Yong , Yuefeng Li
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