Handbook assembled by Nanyun Violet Peng and Mingyu Derek Ma Cover designed by Jingya Chen UTC-5 Contents Table of Contents i 1 Conference Information 1 Message from the General Chair . .1 Message from the Program Committee Co-Chairs . .3 Organizing Committee . .6 Program Committee . .8 2 Tutorials: Sunday, July 5 11 Message from the Tutorial Co-Chairs . 12 T1: Interpretability and Analysis in Neural NLP . 13 T2: Multi-modal Information Extraction from Text, Semi-structured, and Tabular Data on the Web................................................... 14 T3: Reviewing Natural Language Processing Research . 16 T4: Stylized Text Generation: Approaches and Applications . 17 T5: Achieving Common Ground in Multi-modal Dialogue . 18 T6: Commonsense Reasoning for Natural Language Processing . 19 T7: Integrating Ethics into the NLP Curriculum . 20 T8: Open-Domain Question Answering . 21 3 Main Conference: Monday, July 6 23 Session1A .................................................. 26 Demo Session 1B . 41 Session1B .................................................. 42 Demo Session 1C . 58 Demo Session 2A . 59 Session2A .................................................. 60 Demo Session 2B . 80 Session2B .................................................. 81 Demo Session 2C . 99 Demo Session 3A . 100 Session3A .................................................. 101 i UTC-5 Demo Session 3B . 119 Session3B .................................................. 120 Demo Session 3C . 138 Demo Session 4A . 139 Keynote Address: Kathleen R. McKeown . 140 Session4A .................................................. 141 Demo Session 4B . 159 Session4B .................................................. 160 Demo Session 4C . 178 Demo Session 5A . 179 Session5A .................................................. 180 Demo Session 5B . 198 Session5B .................................................. 199 Demo Session 5C . 215 4 Main Conference: Tuesday, July 7 217 Demo Session 1A . 220 Session6A .................................................. 221 Demo Session 1B . 238 Session6B .................................................. 239 Demo Session 1C . 255 Demo Session 2A . 256 Session7A .................................................. 257 Demo Session 2B . 277 Session7B .................................................. 278 Demo Session 3A . 295 Session8A .................................................. 296 Demo Session 3B . 315 Session8B .................................................. 316 Demo Session 3C . 336 Demo Session 4A . 337 Session9A .................................................. 338 Demo Session 4B . 357 Session9B .................................................. 358 Demo Session 4C . 376 Demo Session 5A . 377 Session10A ................................................. 378 Demo Session 5B . 396 Session10B ................................................. 397 Demo Session 5C . 414 5 Main Conference: Wednesday, July 8 415 Demo Session 1A . 418 Session11A ................................................. 419 Demo Session 1B . 436 Session11B ................................................. 437 Demo Session 1C . 454 Demo Session 2A . 455 Session12A ................................................. 456 Demo Session 2B . 475 Session12B ................................................. 476 Demo Session 2C . 494 Demo Session 3A . 495 Session13A ................................................. 496 Demo Session 3B . 515 ii UTC-5 Session13B ................................................. 516 Demo Session 3C . 534 Demo Session 4A . 535 Keynote Address: Josh Tenenbaum . 536 Session14A ................................................. 537 Demo Session 4B . 555 Session14B ................................................. 556 Demo Session 4C . 575 Demo Session 5A . 576 Session15A ................................................. 577 Demo Session 5B . 593 Session15B ................................................. 594 Demo Session 5C . 611 6 Main Conference: Thursday, July 9 613 Demo Session 1A . 614 7 Workshops: Sunday-Friday, July 5-July 10 615 WiNLP: The Fourth Widening NLP Workshop . 618 IWSLT: The 17th International Conference on Spoken Language Translation . 621 NLP4ConvAI: NLP for Conversational AI workshop . 623 BioNLP 2020: Workshop on Biomedical Natural Language Processing . 624 FEVER: The Third workshop on Fact Extraction and VERification . 626 IWPT: The 16th International Conference on Parsing Technologies . 627 FLP: The 2nd Workshop on Figurative Language Processing . 629 NUSE: The 1st Joint Workshop on Narrative Understanding, Storylines, and Events . 631 ALVR: Workshop on Advances in Language and Vision Research . 633 RepL4NLP: The 5th Workshop on Representation Learning for NLP . 634 NLI: Natural Language Interfaces: Challenges and Promises . 637 WNGT: The 4th Workshop on Neural Generation and Translation . 638 BEA: The 15th Workshop on Innovative Use of NLP for Building Educational Applications . 640 SIGMORPHON: 17th Workshop on Computational Research in Phonetics, Phonology, and Mor- phology................................................. 641 NLPMC: NLP for Medical Conversations . 643 ECNLP: The Third Workshop on e-Commerce and NLP . 644 SocialNLP: The Eighth International Workshop on Natural Language Processing for Social Media645 AutoSimTrans: The 1st Workshop on Automatic Simultaneous Translation: challenges, recent advances,and future directions . 646 Challenge-HML: The Second Grand-Challenge and Workshop on Human Multimodal Language647 8 Anti-harassment Policy 649 9 ACL Author Guidelines 651 Author Index 653 Sponsorship 682 iii UTC-5 iv 1 Conference Information Message from the General Chair It is my delightful duty as General Chair to sit at my kitchen table here in San Francisco and write these words welcoming you to the 58th Annual Meeting of the Association for Computational Linguis- tics. Our conference this year is of course very different than in the past; I’ll be attending the conference from my kitchen table as well. This is our first experience of ACL as a virtual conference, a shift due to a great trial to all of us, the COVID-19 virus. Our hope in designing this year’s conference was to draw strength from this tragedy and come to- gether as a community. We wanted the conference to offer a beacon of inclusion, making it much easier for people all over the globe, whatever their resources or backgrounds, to come to share their knowledge and learn from each other, in a safe, welcoming, and exciting environment. And we wanted the conference to offer a message of sustainability, proving that even without the environmental costs of thousands of people flying around the globe, and despite the lack of face-to-face cameraderie that helps bind us together, we could nonetheless send our.