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Hallucination refers to the inaccurate, irrelevant, and inconsistent text generated from large language models (LLMs). While the LLMs have shown great promise in a variety of tasks, the issue of hallucination still remains a major challenge…

Computation and Language · Computer Science 2025-02-26 Junhyun Lee , Harshith Goka , Hyeonmok Ko

This paper presents Z-Code++, a new pre-trained language model optimized for abstractive text summarization. The model extends the state of the art encoder-decoder model using three techniques. First, we use a two-phase pre-training process…

In this paper, we present a conceptually simple while empirically powerful framework for abstractive summarization, SimCLS, which can bridge the gap between the learning objective and evaluation metrics resulting from the currently…

Computation and Language · Computer Science 2021-06-04 Yixin Liu , Pengfei Liu

Entity summarization aims at creating brief but informative descriptions of entities from knowledge graphs. While previous work mostly focused on traditional techniques such as clustering algorithms and graph models, we ask how to apply…

Computation and Language · Computer Science 2020-05-27 Dongjun Wei , Yaxin Liu , Fuqing Zhu , Liangjun Zang , Wei Zhou , Jizhong Han , Songlin Hu

We propose a new length-controllable abstractive summarization model. Recent state-of-the-art abstractive summarization models based on encoder-decoder models generate only one summary per source text. However, controllable summarization,…

Computation and Language · Computer Science 2020-01-22 Itsumi Saito , Kyosuke Nishida , Kosuke Nishida , Atsushi Otsuka , Hisako Asano , Junji Tomita , Hiroyuki Shindo , Yuji Matsumoto

Abstractive summarization aims to generate concise summaries by creating new sentences, allowing for flexible rephrasing. However, this approach can be vulnerable to inaccuracies, particularly `hallucinations' where the model introduces…

Computation and Language · Computer Science 2026-03-10 Chaimae Chellaf , Salima Mdhaffar , Yannick Estève , Stéphane Huet

E-commerce stores collect customer feedback to let sellers learn about customer concerns and enhance customer order experience. Because customer feedback often contains redundant information, a concise summary of the feedback can be…

Computation and Language · Computer Science 2021-07-01 Yang Liu , Yifei Sun , Vincent Gao

Despite recent progress in abstractive summarization, systems still suffer from faithfulness errors. While prior work has proposed models that improve faithfulness, it is unclear whether the improvement comes from an increased level of…

Computation and Language · Computer Science 2022-04-22 Faisal Ladhak , Esin Durmus , He He , Claire Cardie , Kathleen McKeown

Current abstractive summarization systems present important weaknesses which prevent their deployment in real-world applications, such as the omission of relevant information and the generation of factual inconsistencies (also known as…

Computation and Language · Computer Science 2022-11-08 Diogo Pernes , Afonso Mendes , André F. T. Martins

Attention-based neural abstractive summarization systems equipped with copy mechanisms have shown promising results. Despite this success, it has been noticed that such a system generates a summary by mostly, if not entirely, copying over…

Computation and Language · Computer Science 2018-03-21 Noah Weber , Leena Shekhar , Niranjan Balasubramanian , Kyunghyun Cho

Neural models have become successful at producing abstractive summaries that are human-readable and fluent. However, these models have two critical shortcomings: they often don't respect the facts that are either included in the source…

Computation and Language · Computer Science 2020-06-30 Beliz Gunel , Chenguang Zhu , Michael Zeng , Xuedong Huang

Despite the recent advancements in abstractive summarization systems leveraged from large-scale datasets and pre-trained language models, the factual correctness of the summary is still insufficient. One line of trials to mitigate this…

Computation and Language · Computer Science 2022-04-19 Hwanhee Lee , Cheoneum Park , Seunghyun Yoon , Trung Bui , Franck Dernoncourt , Juae Kim , Kyomin Jung

Abstractive text summarization is integral to the Big Data era, which demands advanced methods to turn voluminous and often long text data into concise but coherent and informative summaries for efficient human consumption. Despite…

Computation and Language · Computer Science 2025-10-08 Jianbin Shen , Christy Jie Liang , Junyu Xuan

Abstractive text summarization is a highly difficult problem, and the sequence-to-sequence model has shown success in improving the performance on the task. However, the generated summaries are often inconsistent with the source content in…

Computation and Language · Computer Science 2018-05-11 Bingzhen Wei , Xuancheng Ren , Xu Sun , Yi Zhang , Xiaoyan Cai , Qi Su

We propose an end-to-end neural model for zero-shot abstractive text summarization of paragraphs, and introduce a benchmark task, ROCSumm, based on ROCStories, a subset for which we collected human summaries. In this task, five-sentence…

Computation and Language · Computer Science 2019-10-03 Peter J. Liu , Yu-An Chung , Jie Ren

Abstractive summarization models are typically pre-trained on large amounts of generic texts, then fine-tuned on tens or hundreds of thousands of annotated samples. However, in opinion summarization, large annotated datasets of reviews…

Computation and Language · Computer Science 2022-05-12 Arthur Bražinskas , Ramesh Nallapati , Mohit Bansal , Markus Dreyer

Abstractive summarization has enjoyed renewed interest in recent years, thanks to pre-trained language models and the availability of large-scale datasets. Despite promising results, current models still suffer from generating factually…

Computation and Language · Computer Science 2024-01-08 Roee Aharoni , Shashi Narayan , Joshua Maynez , Jonathan Herzig , Elizabeth Clark , Mirella Lapata

Plan-guided summarization attempts to reduce hallucinations in small language models (SLMs) by grounding generated summaries to the source text, typically by targeting fine-grained details such as dates or named entities. In this work, we…

Computation and Language · Computer Science 2025-08-25 Matt Grenander , Siddharth Varia , Paula Czarnowska , Yogarshi Vyas , Kishaloy Halder , Bonan Min

Current Large Multimodal Models (LMMs) achieve remarkable progress, yet there remains significant uncertainty regarding their ability to accurately apprehend visual details, that is, in performing detailed captioning. To address this, we…

Computer Vision and Pattern Recognition · Computer Science 2024-04-01 Bohan Zhai , Shijia Yang , Chenfeng Xu , Sheng Shen , Kurt Keutzer , Chunyuan Li , Manling Li

Current models for document summarization disregard user preferences such as the desired length, style, the entities that the user might be interested in, or how much of the document the user has already read. We present a neural…

Computation and Language · Computer Science 2018-05-22 Angela Fan , David Grangier , Michael Auli