| 2023 | ACL | Modeling What-to-ask and How-to-ask for Answer-unaware Conversational Question Generation. | Xuan Long Do, Bowei Zou, Shafiq R. Joty, Anh Tran Tai, Liangming Pan, Nancy F. Chen, Ai Ti Aw |
| 2023 | ACL | Randomized Smoothing with Masked Inference for Adversarially Robust Text Classifications. | Han Cheol Moon, Shafiq R. Joty, Ruochen Zhao, Megh Thakkar, Chi Xu |
| 2023 | ACL | Learning to Initialize: Can Meta Learning Improve Cross-task Generalization in Prompt Tuning? | Chengwei Qin, Shafiq R. Joty, Qian Li, Ruochen Zhao |
| 2023 | ACL | Unsupervised Summarization Re-ranking. | Mathieu Ravaut, Shafiq R. Joty, Nancy F. Chen |
| 2022 | AAAI | UNISON: Unpaired Cross-Lingual Image Captioning. | Jiahui Gao, Yi Zhou, Philip L. H. Yu, Shafiq R. Joty, Jiuxiang Gu |
| 2022 | AAAI | Weakly Supervised Neuro-Symbolic Module Networks for Numerical Reasoning over Text. | Amrita Saha, Shafiq R. Joty, Steven C. H. Hoi |
| 2022 | ACL | GlobalWoZ: Globalizing MultiWoZ to Develop Multilingual Task-Oriented Dialogue Systems. | Bosheng Ding, Junjie Hu, Lidong Bing, Sharifah Mahani Aljunied, Shafiq R. Joty, Luo Si, Chunyan Miao |
| 2022 | ACL | Rethinking Self-Supervision Objectives for Generalizable Coherence Modeling. | Prathyusha Jwalapuram, Shafiq R. Joty, Xiang Lin |
| 2022 | ACL | Chart-to-Text: A Large-Scale Benchmark for Chart Summarization. | Shankar Kantharaj, Rixie Tiffany Ko Leong, Xiang Lin, Ahmed Masry, Megh Thakkar, Enamul Hoque, Shafiq R. Joty |
| 2022 | ACL | ChartQA: A Benchmark for Question Answering about Charts with Visual and Logical Reasoning. | Ahmed Masry, Do Xuan Long, Jia Qing Tan, Shafiq R. Joty, Enamul Hoque |
| 2022 | ACL | Continual Few-shot Relation Learning via Embedding Space Regularization and Data Augmentation. | Chengwei Qin, Shafiq R. Joty |
| 2022 | ACL | SummaReranker: A Multi-Task Mixture-of-Experts Re-ranking Framework for Abstractive Summarization. | Mathieu Ravaut, Shafiq R. Joty, Nancy F. Chen |
| 2022 | COLING | CoHS-CQG: Context and History Selection for Conversational Question Generation. | Xuan Long Do, Bowei Zou, Liangming Pan, Nancy F. Chen, Shafiq R. Joty, Ai Ti Aw |
| 2022 | COLING | Towards Multi-Sense Cross-Lingual Alignment of Contextual Embeddings. | Linlin Liu, Thien Hai Nguyen, Shafiq R. Joty, Lidong Bing, Luo Si |
| 2022 | EMNLP | Learning Label Modular Prompts for Text Classification in the Wild. | Hailin Chen, Amrita Saha, Shafiq R. Joty, Steven C. H. Hoi |
| 2022 | EMNLP | OpenCQA: Open-ended Question Answering with Charts. | Shankar Kantharaj, Xuan Long Do, Rixie Tiffany Ko Leong, Jia Qing Tan, Enamul Hoque, Shafiq R. Joty |
| 2022 | EMNLP | Alleviating Sparsity of Open Knowledge Graphs with Ternary Contrastive Learning. | Qian Li, Shafiq R. Joty, Daling Wang, Shi Feng, Yifei Zhang |
| 2022 | EMNLP | Enhancing Multilingual Language Model with Massive Multilingual Knowledge Triples. | Linlin Liu, Xin Li, Ruidan He, Lidong Bing, Shafiq R. Joty, Luo Si |
| 2022 | EMNLP | Data Selection Curriculum for Neural Machine Translation. | Tasnim Mohiuddin, Philipp Koehn, Vishrav Chaudhary, James Cross, Shruti Bhosale, Shafiq R. Joty |
| 2022 | EMNLP | Towards Summary Candidates Fusion. | Mathieu Ravaut, Shafiq R. Joty, Nancy F. Chen |
| 2022 | EMNLP | BotSIM: An End-to-End Bot Simulation Framework for Commercial Task-Oriented Dialog Systems. | Guangsen Wang, Samson Tan, Shafiq R. Joty, Gang Wu, Jimmy Au, Steven C. H. Hoi |
| 2022 | ICLR | Contrastive Clustering to Mine Pseudo Parallel Data for Unsupervised Translation. | Xuan-Phi Nguyen, Hongyu Gong, Yun Tang, Changhan Wang, Philipp Koehn, Shafiq R. Joty |
| 2022 | ICLR | LFPT5: A Unified Framework for Lifelong Few-shot Language Learning Based on Prompt Tuning of T5. | Chengwei Qin, Shafiq R. Joty |
| 2022 | KDD | GradMask: Gradient-Guided Token Masking for Textual Adversarial Example Detection. | Han Cheol Moon, Shafiq R. Joty, Xu Chi |
| 2022 | SIGMOD | LANTERN: Boredom-conscious Natural Language Description Generation of Query Execution Plans for Database Education. | Peng Chen, Hui Li, Sourav S. Bhowmick, Shafiq R. Joty, Weiguo Wang |
| 2021 | ACL | UXLA: A Robust Unsupervised Data Augmentation Framework for Zero-Resource Cross-Lingual NLP. | M. Saiful Bari, Tasnim Mohiuddin, Shafiq R. Joty |
| 2021 | ACL | MulDA: A Multilingual Data Augmentation Framework for Low-Resource Cross-Lingual NER. | Linlin Liu, Bosheng Ding, Lidong Bing, Shafiq R. Joty, Luo Si, Chunyan Miao |
| 2021 | ACL | AugVic: Exploiting BiText Vicinity for Low-Resource NMT. | Tasnim Mohiuddin, M. Saiful Bari, Shafiq R. Joty |
| 2021 | ACL | A Conditional Splitting Framework for Efficient Constituency Parsing. | Thanh-Tung Nguyen, Xuan-Phi Nguyen, Shafiq R. Joty, Xiaoli Li |
| 2021 | ACL | Reliability Testing for Natural Language Processing Systems. | Samson Tan, Shafiq R. Joty, Kathy Baxter, Araz Taeihagh, Gregory A. Bennett, Min-Yen Kan |
| 2021 | CIKM | Span-Level Emotion Cause Analysis by BERT-based Graph Attention Network. | Xiangju Li, Wei Gao, Shi Feng, Daling Wang, Shafiq R. Joty |
| 2021 | CIKM | Span-level Emotion Cause Analysis with Neural Sequence Tagging. | Xiangju Li, Wei Gao, Shi Feng, Daling Wang, Shafiq R. Joty |
| 2021 | EACL | Rethinking Coherence Modeling: Synthetic vs. Downstream Tasks. | Tasnim Mohiuddin, Prathyusha Jwalapuram, Xiang Lin, Shafiq R. Joty |
| 2021 | EMNLP | CodeT5: Identifier-aware Unified Pre-trained Encoder-Decoder Models for Code Understanding and Generation. | Yue Wang, Weishi Wang, Shafiq R. Joty, Steven C. H. Hoi |
| 2021 | EMNLP | GeDi: Generative Discriminator Guided Sequence Generation. | Ben Krause, Akhilesh Deepak Gotmare, Bryan McCann, Nitish Shirish Keskar, Shafiq R. Joty, Richard Socher, Nazneen Fatema Rajani |
| 2021 | EMNLP | Effective Fine-Tuning Methods for Cross-lingual Adaptation. | Tao Yu, Shafiq R. Joty |
| 2021 | EMNLP | A Unified Speaker Adaptation Approach for ASR. | Yingzhu Zhao, Chongjia Ni, Cheung-Chi Leung, Shafiq R. Joty, Eng Siong Chng, Bin Ma |
| 2021 | ICASSP | Preventing Early Endpointing for Online Automatic Speech Recognition. | Yingzhu Zhao, Chongjia Ni, Cheung-Chi Leung, Shafiq R. Joty, Eng Siong Chng, Bin Ma |
| 2021 | ICML | Straight to the Gradient: Learning to Use Novel Tokens for Neural Text Generation. | Xiang Lin, Simeng Han, Shafiq R. Joty |
| 2021 | ICML | Cross-model Back-translated Distillation for Unsupervised Machine Translation. | Xuan-Phi Nguyen, Shafiq R. Joty, Thanh-Tung Nguyen, Kui Wu, Ai Ti Aw |
| 2021 | NAACL | Improving Zero and Few-Shot Abstractive Summarization with Intermediate Fine-tuning and Data Augmentation. | Alexander R. Fabbri, Simeng Han, Haoyuan Li, Haoran Li, Marjan Ghazvininejad, Shafiq R. Joty, Dragomir R. Radev, Yashar Mehdad |
| 2021 | NAACL | RST Parsing from Scratch. | Thanh-Tung Nguyen, Xuan-Phi Nguyen, Shafiq R. Joty, Xiaoli Li |
| 2021 | NAACL | Code-Mixing on Sesame Street: Dawn of the Adversarial Polyglots. | Samson Tan, Shafiq R. Joty |
| 2021 | NAACL | Addressing the Vulnerability of NMT in Input Perturbations. | Weiwen Xu, Ai Ti Aw, Yang Ding, Kui Wu, Shafiq R. Joty |
| 2021 | SIGMOD | Towards Enhancing Database Education: Natural Language Generation Meets Query Execution Plans. | Weiguo Wang, Sourav S. Bhowmick, Hui Li, Shafiq R. Joty, Siyuan Liu, Peng Chen |
| 2020 | AAAI | Zero-Resource Cross-Lingual Named Entity Recognition. | M. Saiful Bari, Shafiq R. Joty, Prathyusha Jwalapuram |
| 2020 | ACL | Explicit Memory Tracker with Coarse-to-Fine Reasoning for Conversational Machine Reading. | Yifan Gao, Chien-Sheng Wu, Shafiq R. Joty, Caiming Xiong, Richard Socher, Irwin King, Michael R. Lyu, Steven C. H. Hoi |
| 2020 | ACL | Efficient Constituency Parsing by Pointing. | Thanh-Tung Nguyen, Xuan-Phi Nguyen, Shafiq R. Joty, Xiaoli Li |
| 2020 | ACL | Differentiable Window for Dynamic Local Attention. | Thanh-Tung Nguyen, Xuan-Phi Nguyen, Shafiq R. Joty, Xiaoli Li |
| 2020 | ACL | It's Morphin' Time! Combating Linguistic Discrimination with Inflectional Perturbations. | Samson Tan, Shafiq R. Joty, Min-Yen Kan, Richard Socher |
| 2020 | ECCV | Finding It at Another Side: A Viewpoint-Adapted Matching Encoder for Change Captioning. | Xiangxi Shi, Xu Yang, Jiuxiang Gu, Shafiq R. Joty, Jianfei Cai |
| 2020 | EMNLP | DAGA: Data Augmentation with a Generation Approach forLow-resource Tagging Tasks. | Bosheng Ding, Linlin Liu, Lidong Bing, Canasai Kruengkrai, Thien Hai Nguyen, Shafiq R. Joty, Luo Si, Chunyan Miao |
| 2020 | EMNLP | Discern: Discourse-Aware Entailment Reasoning Network for Conversational Machine Reading. | Yifan Gao, Chien-Sheng Wu, Jingjing Li, Shafiq R. Joty, Steven C. H. Hoi, Caiming Xiong, Irwin King, Michael R. Lyu |
| 2020 | EMNLP | Pronoun-Targeted Fine-tuning for NMT with Hybrid Losses. | Prathyusha Jwalapuram, Shafiq R. Joty, Youlin Shen |
| 2020 | EMNLP | Mind Your Inflections! Improving NLP for Non-Standard Englishes with Base-Inflection Encoding. | Samson Tan, Shafiq R. Joty, Lav R. Varshney, Min-Yen Kan |
| 2020 | EMNLP | Response Selection for Multi-Party Conversations with Dynamic Topic Tracking. | Weishi Wang, Steven C. H. Hoi, Shafiq R. Joty |
| 2020 | EMNLP | VD-BERT: A Unified Vision and Dialog Transformer with BERT. | Yue Wang, Shafiq R. Joty, Michael R. Lyu, Irwin King, Caiming Xiong, Steven C. H. Hoi |
| 2020 | EMNLP | Online Conversation Disentanglement with Pointer Networks. | Tao Yu, Shafiq R. Joty |
| 2020 | ICLR | Tree-Structured Attention with Hierarchical Accumulation. | Xuan-Phi Nguyen, Shafiq R. Joty, Steven C. H. Hoi, Richard Socher |
| 2020 | Interspeech | Speech Transformer with Speaker Aware Persistent Memory. | Yingzhu Zhao, Chongjia Ni, Cheung-Chi Leung, Shafiq R. Joty, Eng Siong Chng, Bin Ma |
| 2020 | Interspeech | Universal Speech Transformer. | Yingzhu Zhao, Chongjia Ni, Cheung-Chi Leung, Shafiq R. Joty, Eng Siong Chng, Bin Ma |
| 2020 | Interspeech | Cross Attention with Monotonic Alignment for Speech Transformer. | Yingzhu Zhao, Chongjia Ni, Cheung-Chi Leung, Shafiq R. Joty, Eng Siong Chng, Bin Ma |
| 2019 | AAAI | Adversarial Unsupervised Representation Learning for Activity Time-Series. | Karan Aggarwal, Shafiq R. Joty, Luis Fernndez-Luque, Jaideep Srivastava |
| 2019 | ACL | Discourse Analysis and Its Applications. | Shafiq R. Joty, Giuseppe Carenini, Raymond T. Ng, Gabriel Murray |
| 2019 | ACL | A Unified Linear-Time Framework for Sentence-Level Discourse Parsing. | Xiang Lin, Shafiq R. Joty, Prathyusha Jwalapuram, Saiful Bari |
| 2019 | ACL | Sentence-Level Evidence Embedding for Claim Verification with Hierarchical Attention Networks. | Jing Ma, Wei Gao, Shafiq R. Joty, Kam-Fai Wong |
| 2019 | EMNLP | Evaluating Pronominal Anaphora in Machine Translation: An Evaluation Measure and a Test Suite. | Prathyusha Jwalapuram, Shafiq R. Joty, Irina P. Temnikova, Preslav Nakov |
| 2019 | EMNLP | Using Clinical Notes with Time Series Data for ICU Management. | Swaraj Khadanga, Karan Aggarwal, Shafiq R. Joty, Jaideep Srivastava |
| 2019 | EMNLP | Hierarchical Pointer Net Parsing. | Linlin Liu, Xiang Lin, Shafiq R. Joty, Simeng Han, Lidong Bing |
| 2019 | EMNLP | A Unified Neural Coherence Model. | Han Cheol Moon, Tasnim Mohiuddin, Shafiq R. Joty, Xu Chi |
| 2019 | ICCV | Unpaired Image Captioning via Scene Graph Alignments. | Jiuxiang Gu, Shafiq R. Joty, Jianfei Cai, Handong Zhao, Xu Yang, Gang Wang |
| 2019 | NAACL | Revisiting Adversarial Autoencoder for Unsupervised Word Translation with Cycle Consistency and Improved Training. | Tasnim Mohiuddin, Shafiq R. Joty |
| 2019 | NAACL | Adaptation of Hierarchical Structured Models for Speech Act Recognition in Asynchronous Conversation. | Tasnim Mohiuddin, Thanh-Tung Nguyen, Shafiq R. Joty |
| 2019 | SIGMOD | NEURON: Query Execution Plan Meets Natural Language Processing For Augmenting DB Education. | Siyuan Liu, Sourav S. Bhowmick, Wanlu Zhang, Shu Wang, Wanyi Huang, Shafiq R. Joty |
| 2018 | ACL | Domain Adaptation with Adversarial Training and Graph Embeddings. | Firoj Alam, Shafiq R. Joty, Muhammad Imran |
| 2018 | ACL | Coherence Modeling of Asynchronous Conversations: A Neural Entity Grid Approach. | Tasnim Mohiuddin, Shafiq R. Joty, Dat Tien Nguyen |
| 2018 | CIKM | ANR: Aspect-based Neural Recommender. | Jin Yao Chin, Kaiqi Zhao, Shafiq R. Joty, Gao Cong |
| 2018 | COLING | NLP for Conversations: Sentiment, Summarization, and Group Dynamics. | Gabriel Murray, Giuseppe Carenini, Shafiq R. Joty |
| 2018 | CVPR | Look, Imagine and Match: Improving Textual-Visual Cross-Modal Retrieval With Generative Models. | Jiuxiang Gu, Jianfei Cai, Shafiq R. Joty, Li Niu, Gang Wang |
| 2018 | ECCV | Unpaired Image Captioning by Language Pivoting. | Jiuxiang Gu, Shafiq R. Joty, Jianfei Cai, Gang Wang |
| 2018 | ECCV | VQA-E: Explaining, Elaborating, and Enhancing Your Answers for Visual Questions. | Qing Li, Qingyi Tao, Shafiq R. Joty, Jianfei Cai, Jiebo Luo |
| 2018 | EMNLP | Joint Multitask Learning for Community Question Answering Using Task-Specific Embeddings. | Shafiq R. Joty, Llus Mrquez, Preslav Nakov |
| 2018 | ICDM | Discourse Processing and Its Applications in Text Mining. | Shafiq R. Joty, Giuseppe Carenini, Raymond T. Ng, Gabriel Murray |
| 2018 | IJCAI | SegBot: A Generic Neural Text Segmentation Model with Pointer Network. | Jing Li, Aixin Sun, Shafiq R. Joty |
| 2018 | ICWSM | Graph Based Semi-Supervised Learning with Convolution Neural Networks to Classify Crisis Related Tweets. | Firoj Alam, Shafiq R. Joty, Muhammad Imran |
| 2017 | CIKM | Regularized and Retrofitted models for Learning Sentence Representation with Context. | Tanay Kumar Saha, Shafiq R. Joty, Naeemul Hassan, Mohammad Al Hasan |
| 2017 | CoNLL | Cross-language Learning with Adversarial Neural Networks. | Shafiq R. Joty, Preslav Nakov, Llus Mrquez, Israa Jaradat |
| 2017 | ICWSM | Robust Classification of Crisis-Related Data on Social Networks Using Convolutional Neural Networks. | Dat Tien Nguyen, Kamla Al-Mannai, Shafiq R. Joty, Hassan Sajjad, Muhammad Imran, Prasenjit Mitra |
| 2017 | IUI | CQAVis: Visual Text Analytics for Community Question Answering. | Enamul Hoque, Shafiq R. Joty, Llus Mrquez, Giuseppe Carenini |
| 2017 | SIGIR | Cross-Language Question Re-Ranking. | Giovanni Da San Martino, Salvatore Romeo, Alberto Barrn-Cedeo, Shafiq R. Joty, Llus Mrquez, Alessandro Moschitti, Preslav Nakov |
| 2016 | ACL | Speech Act Modeling of Written Asynchronous Conversations with Task-Specific Embeddings and Conditional Structured Models. | Shafiq R. Joty, Enamul Hoque |
| 2016 | COLING | A Deep Fusion Model for Domain Adaptation in Phrase-based MT. | Nadir Durrani, Hassan Sajjad, Shafiq R. Joty, Ahmed Abdelali |
| 2016 | COLING | An Interactive System for Exploring Community Question Answering Forums. | Enamul Hoque, Shafiq R. Joty, Llus Mrquez, Alberto Barrn-Cedeo, Giovanni Da San Martino, Alessandro Moschitti, Preslav Nakov, Salvatore Romeo, Giuseppe Carenini |
| 2016 | NAACL | Joint Learning with Global Inference for Comment Classification in Community Question Answering. | Shafiq R. Joty, Llus Mrquez, Preslav Nakov |
| 2015 | ACL | Thread-Level Information for Comment Classification in Community Question Answering. | Alberto Barrn-Cedeo, Simone Filice, Giovanni Da San Martino, Shafiq R. Joty, Llus Mrquez, Preslav Nakov, Alessandro Moschitti |
| 2015 | ACL | Pairwise Neural Machine Translation Evaluation. | Francisco Guzmn, Shafiq R. Joty, Llus Mrquez, Preslav Nakov |
| 2015 | EMNLP | Global Thread-level Inference for Comment Classification in Community Question Answering. | Shafiq R. Joty, Alberto Barrn-Cedeo, Giovanni Da San Martino, Simone Filice, Llus Mrquez, Alessandro Moschitti, Preslav Nakov |
| 2015 | EMNLP | How to Avoid Unwanted Pregnancies: Domain Adaptation using Neural Network Models. | Shafiq R. Joty, Hassan Sajjad, Nadir Durrani, Kamla Al-Mannai, Ahmed Abdelali, Stephan Vogel |
| 2015 | EMNLP | Fine-grained Opinion Mining with Recurrent Neural Networks and Word Embeddings. | Pengfei Liu, Shafiq R. Joty, Helen M. Meng |
| 2014 | ACL | Using Discourse Structure Improves Machine Translation Evaluation. | Francisco Guzmn, Shafiq R. Joty, Llus Mrquez, Preslav Nakov |
| 2014 | COLING | A Study of using Syntactic and Semantic Structures for Concept Segmentation and Labeling. | Iman Saleh, Scott Cyphers, James R. Glass, Shafiq R. Joty, Llus Mrquez i Villodre, Alessandro Moschitti, Preslav Nakov |
| 2014 | EMNLP | Learning to Differentiate Better from Worse Translations. | Francisco Guzmn, Shafiq R. Joty, Llus Mrquez, Alessandro Moschitti, Preslav Nakov, Massimo Nicosia |
| 2014 | EMNLP | Discriminative Reranking of Discourse Parses Using Tree Kernels. | Shafiq R. Joty, Alessandro Moschitti |
| 2014 | EMNLP | Semantic Kernels for Semantic Parsing. | Iman Saleh, Alessandro Moschitti, Preslav Nakov, Llus Mrquez, Shafiq R. Joty |
| 2013 | ACL | Combining Intra- and Multi-sentential Rhetorical Parsing for Document-level Discourse Analysis. | Shafiq R. Joty, Giuseppe Carenini, Raymond T. Ng, Yashar Mehdad |
| 2013 | NAACL | Towards Topic Labeling with Phrase Entailment and Aggregation. | Yashar Mehdad, Giuseppe Carenini, Raymond T. Ng, Shafiq R. Joty |
| 2013 | SIGdial | Dialogue Act Recognition in Synchronous and Asynchronous Conversations. | Maryam Tavafi, Yashar Mehdad, Shafiq R. Joty, Giuseppe Carenini, Raymond T. Ng |
| 2012 | EMNLP | A Novel Discriminative Framework for Sentence-Level Discourse Analysis. | Shafiq R. Joty, Giuseppe Carenini, Raymond T. Ng |
| 2011 | AI | Exploiting Conversational Features to Detect High-Quality Blog Comments. | Nicholas FitzGerald, Giuseppe Carenini, Gabriel Murray, Shafiq R. Joty |
| 2011 | IJCAI | Unsupervised Modeling of Dialog Acts in Asynchronous Conversations. | Shafiq R. Joty, Giuseppe Carenini, Chin-Yew Lin |
| 2011 | ICWSM | Supervised Topic Segmentation of Email Conversations. | Shafiq R. Joty, Giuseppe Carenini, Gabriel Murray, Raymond T. Ng |
| 2010 | EMNLP | Exploiting Conversation Structure in Unsupervised Topic Segmentation for Emails. | Shafiq R. Joty, Giuseppe Carenini, Gabriel Murray, Raymond T. Ng |
| 2009 | ACL | Do Automatic Annotation Techniques Have Any Impact on Supervised Complex Question Answering? | Yllias Chali, Sadid A. Hasan, Shafiq R. Joty |
| 2009 | AI | A SVM-Based Ensemble Approach to Multi-Document Summarization. | Yllias Chali, Sadid A. Hasan, Shafiq R. Joty |
| 2008 | ACL | Improving the Performance of the Random Walk Model for Answering Complex Questions. | Yllias Chali, Shafiq R. Joty |
| 2008 | EMNLP | Selecting Sentences for Answering Complex Questions. | Yllias Chali, Shafiq R. Joty |
| 2008 | FlAIRS | Unsupervised Approach for Selecting Sentences in Query-based Summarization. | Yllias Chali, Shafiq R. Joty |
| 2008 | ICTAI | Exploiting Syntactic and Shallow Semantic Kernels to Improve Random Walks for Complex Question Answering. | Yllias Chali, Shafiq R. Joty |
| 2008 | ICTAI | Answering Complex Questions Using Query-Focused Summarization Technique. | Yllias Chali, Shafiq R. Joty |