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        "body_text": [
            {
                "text": "The 2nd workshop on Life-long Learning for Spoken Language Systems covers challenges in a lifelong process of a natural language system, where new users or functionalities are added, and existing functionalities are modified. Improving such systems often require updating training data, and statistical models to account for data distribution shifts. This workshop will be co-located with AACL 2020 and will be held online.",
                "cite_spans": [],
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                "section": "Introduction",
                "sec_num": null
            },
            {
                "text": "This year we received six submissions for the main workshop track and accepted three of them. We would like to thank the Program Committee members who reviewed the papers and provided valuable feedback. We would also like to thank the workshop participants. ",
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                "section": "Introduction",
                "sec_num": null
            }
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            "TABREF1": {
                "text": "Deep Active Learning for Sequence Labeling Based on Diversity and Uncertainty in Gradient Yekyung Kim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Supervised Adaptation of Sequence-to-Sequence Speech Recognition Systems using Batch-Weighting Christian Huber, Juan Hussain, Tuan-Nam Nguyen, Kaihang Song, Sebastian St\u00fcker and Alexander Waibel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Data Augmentation using Pre-trained Transformer Models Varun Kumar, Ashutosh Choudhary and Eunah Cho . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18",
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