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Multi-EuP: Analysis of Bias in Information Retrieval - Conclusion, Limitations, and Ethics Statement
:::info This paper is available on arxiv under CC 4.0 license. Authors: (1) Jinrui Yang, School of Computing & Information Systems, The University of Melbourne (Email: jinruiy@student.unimelb.edu.au); (2) Timothy Baldwin, School of Computing & Information Systems, The University of Melbourne and Mohamed bin Zayed University of Artificial Intelligence, UAE (Email: (tbaldwin,trevor.cohn)@unimelb.edu.au); (3) Trevor Cohn, School of Computing & Information Systems, The University of Melbourne. ::: Table of Links Abstract and Intro Background and Related Work Multi-EuP Experiments and Findings Language Bias Discussion Conclusion, Limitations, Ethics Statement, Acknowledgements, References, and Appendix 6 Conclusion In this paper, we introduce Multi-EuP, a novel dataset for multilingual information retrieval across 24 languages, collected from European Parliament debates. The demographic information provided by the Multi-EuP dataset serves a dual purpose: not only does it contribute to multilingual retrieval tasks, but it also holds significant potential for advancing research in the realm of fairness and bias. This dataset can play a pivotal role in investigating issues of equitable representations and mitigation of biases within document ranking settings. Multi-EuP facilitates diverse information retrieval (IR) scenarios, encompassing one-vs-one, one-vs-many, and many-vs-many settings. We demonstrated the utility of Multi-EuP as a benchmark for evaluating both monolingual and multilingual IR. Our study reveals the presence of language bias in multilingual IR when employing BM25. We further validate the effectiveness of mitigating this bias through the strategic implementation of whitespace as a language tokenizer. We propose to conduct future work in three main areas. First, we intend to expand our investigation of language bias to encompass a broader range of ranking methods, including neural methods such as mDPR (Zhang et al., 2021), mColBERT (Lawrie et al., 2023) and PLAID-X(Santhanam et al., 2022). Second, we will expand the dataset by developing an automated API to retrieve data published by the European Parliament (EP), thereby ensuring realtime synchronization of our dataset. Lastly, our current experiments have explored language bias only, but we plan to further investigate gender bias, age bias, and nationality bias. Limitations The limitations of the Multi-EuP dataset are notable but navigable. Primarily, the temporal coverage of the dataset is confined to the past three years. This temporal constraint arises due to the fact that, preceding 2020, documents released by the EU were predominantly available in mono-lingual versions only. However, a potential remedy lies in the amalgamation of the Europarl (Koehn, 2005) collection, enabling a more comprehensive and holistic MultiEuP dataset. Furthermore, it is worth noting the domain skew of the dataset, in that Multi-EuP inevitably centers on political matters. While this presents challenges, particularly in terms of the intricate nuances of political language, it inherently serves as an excellent foundational stepping stone for delving into the intricacies of multilingual retrieval. We believe, however, that this dataset can serve as a launching pad for broader explorations encompassing crossdomain and open-domain transfer learning scenarios, thus contributing to the broader landscape of language understanding and retrieval. Ethics Statement The dataset contains publicly-available EP data that does not include personal or sensitive information, with the exception of information relating to public officeholders, e.g., the names of the active members of the European Parliament, European Council, or other official administration bodies. The collected data is licensed under the Creative Commons Attribution 4.0 International licence. [8] Acknowledgements This research was funded by Melbourne Research Scholarship and undertaken using the LIEF HPCGPGPU Facility hosted at the University of Melbourne. This facility was established with the assistance of LIEF Grant LE170100200. We would like to thank George Buchanan for providing valuable feedback. References Luiz Henrique Bonifacio, Israel Campiotti, Roberto de Alencar Lotufo, and Rodrigo Frassetto Nogueira. 2021. mMARCO: A multilingual version of MS MARCO passage ranking dataset. CoRR, abs/2108.13897. Ilias Chalkidis, Manos Fergadiotis, and Ion Androutsopoulos. 2021. MultiEURLEX - a multi-lingual and multi-label legal document classification dataset for zero-shot cross-lingual transfer. In Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing, pages 6974–6996, Online and Punta Cana, Dominican Republic. Association for Computational Linguistics. 8 https://eur-lex.europa.eu/cont Jonathan H. Clark, Eunsol Choi, Michael Collins, Dan Garrette, Tom Kwiatkowski, Vitaly Nikolaev, and Jennimaria Palomaki. 2020. TyDi QA: A benchmark for information-seeking question answering in typologically diverse languages. Transactions of the Association for Computational Linguistics, 8:454–470. Vladimir Karpukhin, Barlas Oguz, Sewon Min, Patrick Lewis, Ledell Wu, Sergey Edunov, Danqi Chen, and Wen-tau Yih. 2020. Dense passage retrieval for opendomain question answering. In Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP), pages 6769–6781, Online. Association for Computational Linguistics. Omar Khattab and Matei Zaharia. 2020. Colbert: Efficient and effective passage search via contextualized late interaction over BERT. CoRR, abs/2004.12832. Philipp Koehn. 2005. Europarl: A parallel corpus for statistical machine translation. In Proceedings of Machine Translation Summit X: Papers, pages 79–86, Phuket, Thailand. Dawn Lawrie, Eugene Yang, Douglas W. Oard, and James Mayfield. 2023. Neural approaches to multilingual information retrieval. arXiv cs.IR 2209.01335. Jimmy Lin, Xueguang Ma, Sheng-Chieh Lin, JhengHong Yang, Ronak Pradeep, and Rodrigo Nogueira. 2021. Pyserini: A Python toolkit for reproducible information retrieval research with sparse and dense representations. https://github.com/ castorini/pyserini. Tri Nguyen, Mir Rosenberg, Xia Song, Jianfeng Gao, Saurabh Tiwary, Rangan Majumder, and Li Deng. 2016. MS MARCO: A human generated machine reading comprehension dataset. CoRR, abs/1611.09268. Ella Rabinovich, Raj Nath Patel, Shachar Mirkin, Lucia Specia, and Shuly Wintner. 2017. Personalized machine translation: Preserving original author traits. In Proceedings of the 15th Conference of the European Chapter of the Association for Computational Linguistics: Volume 1, Long Papers, pages 1074–1084, Valencia, Spain. Association for Computational Linguistics. Razieh Rahimi, Azadeh Shakery, and Irwin King. 2015. Multilingual information retrieval in the language modeling framework. Information Retrieval Journal, 18:246–281. Keshav Santhanam, Omar Khattab, Christopher Potts, and Matei Zaharia. 2022. PLAID: An efficient engine for late interaction retrieval. 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BEIRPL: Zero shot information retrieval benchmark for the Polish language. arXiv cs.IR 2305.19840. Peilin Yang, Hui Fang, and Jimmy Lin. 2017. Anserini: Enabling the use of lucene for information retrieval research. In Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 1253–1256. Xinyu Zhang, Xueguang Ma, Peng Shi, and Jimmy Lin. 2021. Mr. TyDi: A multi-lingual benchmark for dense retrieval. arXiv cs.CL 2108.08787. A. Appendix [8] https://eur-lex.europa.eu/content/ legal-notice/legal-notice.html
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Multi-EuP: Analysis of Bias in Information Retrieval...
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Navigating Complex Search Tasks with AI Copilots: The Undiscovered Country and References
:::info This paper is available on arxiv under CC 4.0 license. Authors: (1) Ryen W. White, Microsoft Research, Redmond, WA, USA. ::: Table of Links Abstract and Taking Search to task AI Copilots Challenges Opportunities The Undiscovered Country and References 5 THE UNDISCOVERED COUNTRY AI copilots will transform how we search. Tasks are central to people's lives and more support is needed for complex tasks in search settings. Some limited support for these tasks already exists in search engines, but copilots will expand the task frontier to make more tasks actionable and address the “last mile” in search interaction: task completion [58]. Moving forward, search providers should invest in “better together” experiences that utilize copilots plus traditional search, make these joint experiences more seamless for searchers, and add more support for their use in practice, e.g., help people to quickly understand copilot capabilities and potential and/or recommend the best modality for the current task or task stage. This includes experiences where both modalities are offered separately and can be selected by searchers and those where there is unification and the selection happens automatically based on the query and the conversation context. The foundation models that power copilots have other search-related applications, e.g., for generating and applying intent taxonomies [43] or for evaluation [19]. We must retain a continued focus on human-AI cooperation, where searchers stay in control while the degree of system support increases as needed [44], and on AI safety. Searchers need to be able to trust copilots in general but also be able to verify their answers with minimal effort. Overall, the future is bright for IR, and AI research in general, with the advent of generative AI and the copilots that build upon it. Copilots will help augment and empower searchers in their information seeking journeys. Computer science researchers and practitioners should embrace this new era of assistive agents and engage across the full spectrum of exciting practical and scientific opportunities, both within information seeking as we focused on here, and onwards into other important domains such as personal productivity [5] and scientific discovery [22]. REFERENCES [1] Eugene Agichtein, Ryen W White, Susan T Dumais, and Paul N Bennet. 2012. Search, interrupted: understanding and predicting search task continuation. In Proceedings of the 35th international ACM SIGIR conference on Research and development in information retrieval. 315-324. [2] Marcia J Bates. 1990. 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Navigating Complex Search Tasks with AI Copilots:...
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Navigating Complex Search Tasks with AI Copilots: Abstract and Taking Search to task
:::info This paper is available on arxiv under CC 4.0 license. Authors: (1) Ryen W. White, Microsoft Research, Redmond, WA, USA. ::: Table of Links Abstract and Taking Search to task AI Copilots Challenges Opportunities The Undiscovered Country and References ABSTRACT As many of us in the information retrieval (IR) research community know and appreciate, search is far from being a solved problem. Millions of people struggle with tasks on search engines every day. Often, their struggles relate to the intrinsic complexity of their task and the failure of search systems to fully understand the task and serve relevant results [58]. The task motivates the search, creating the gap/problematic situation that searchers attempt to bridge/resolve and drives search behavior as they work through different task facets. Complex search tasks require more than support for rudimentary fact finding or re-finding. Research on methods to support complex tasks includes work on generating query and website suggestions [21, 62], personalizing and contextualizing search [4], and developing new search experiences, including those that span time and space [1, 64]. The recent emergence of generative artificial intelligence (AI) and the arrival of assistive agents, or copilots, based on this technology, has the potential to offer further assistance to searchers, especially those engaged in complex tasks [41, 61]. There are profound implications from these advances for the design of intelligent systems and for the future of search itself. This article, based on a keynote by the author at the 2023 ACM SIGIR Conference, explores these issues and charts a course toward new horizons in information access guided by AI copilots. ACM Reference Format: Ryen W. White. 2023. Navigating Complex Search Tasks with AI Copilots. Under review at REDACTED. October, 2023 1 TAKING SEARCH TO TASK Tasks are a critical part of people's daily lives. The market for dedicated task applications that help people with their “to do” tasks is likely to grow significantly (effectively triple in size) over the next few years.[1] There are many examples of such applications that can help both individuals (e.g., Microsoft To Do, Google Tasks, Todoist) and teams (e.g., Asana, Trello, Monday.com) tackle their tasks more effectively. Over time, these systems will increasingly integrate AI to better help their users capture, manage, and complete their tasks [60]. In information access scenarios such as search, tasks play an important role in motivating searching via gaps in knowledge and problematic situations [3, 15]. AI can be central in these search scenarios, too, especially in assisting with complex search tasks. 1.1 Tasks in Search Tasks drive the search process. The IR and information science communities have long studied tasks in search [42] and many information seeking models consider the role of task directly [3, 15]. Prior research has explored the different stages of task execution (e.g., pre-focus, focus formation, post-focus) [53], task levels [39], task facets [29], tasks defined on intents (e.g., informational, transactional, and navigational [8]; well-defined or ill-defined [23]; lookup, learn, or investigate [32]), the hierarchical structure of tasks [68], the characteristics of tasks, and the attributes of task searcher interaction, e.g., task difficulty and, of course, a focus in this article, task complexity [11, 26]. As a useful framing device to help conceptualize tasks and develop system support for them, tasks can be represented as trees comprising macrotasks (high level goals), subtasks (specific components of those goals), and actions (specific steps taken by searchers toward the completion of those components) [42]. Figure 1 presents an example of a “task tree” for a task involving an upcoming vacation to Paris, France. Examples of macrotasks, subtasks, and actions are included. Moves around this tree correspond to different task applications such as task recognition (up), task decomposition (down), and task prediction (across). Only actions (e.g., queries, clicks, and so on) are directly observable to traditional search engines. However, with recent advances in search copilots (more fully supporting natural language interactions via language understanding and language generation), more aspects of macrotasks and subtasks are becoming visible to search systems and more fully understood by those systems. Challenges in working with tasks include how to represent them within search systems, how to observe more task-relevant activity and content to develop richer task models, and how to develop task-oriented interfaces that place tasks and their completion at the forefront of user engagement. Task complexity deserves a special focus in this article given the challenges that searchers can still face with complex tasks and the significant potential of AI to help searchers tackle complex tasks. 1.2 Complex Search Tasks Recent estimates suggest that half of all Web searches are not answered.[2] Many of those searches are connected to complex search tasks. These tasks are ill-defined and/or multi-step, span multiple queries, sessions, and/or devices, and require deep engagement with search engines (many queries, backtracking, branching, etc.) to complete them [21]. Complex tasks also often have many facets and cognitive dimensions, and are closely connected to searcher characteristics such as domain expertise and task familiarity [38, 58]. To date, there have been significant attempts to support complex search tasks via humans (e.g., librarians, subject matter experts) and search systems (both general Web search engines and those tailored to specific industry verticals or domains). The main technological progress so far has been in areas such as query suggestion and contextual search, with new experiences also being developed that utilize multiple devices, provide cross-session support, and enable conversational search. We are now also seeing emerging search-related technologies in the area of generative AI [35]. Before proceeding, let us dive into these different types of existing and emerging search support for complex tasks in more detail. • Suggestions, personalization, and contextualization: Researchers and practitioners have long developed and deployed support such as query suggestion and trail suggestion, e.g., [21, 45], including providing guided tours [51] and suggesting popular trail destinations [62] as ways to find relevant resources. This coincides with work on contextual search and personalized search, e.g., [4, 47, 63], where search systems can use data from the current searcher such as session activity, location, reading level, and so on, and the searcher's long-term activity history, to provide more relevant results. Search engines may also use cohort activities to help with cold-start problems for new users and augment personal profiles for more established searchers [48, 69]. • Multi-device, cross-device, and cross-session: Devices have different capabilities and can be used in different settings. Multidevice experiences, e.g., [64], utilizing multiple devices simultaneously to better support complex tasks such as recipe preparation, auto repair, and home improvement that have been decomposed into steps manually or automatically [73]. Cross-device and cross-session support [1, 56] can help with ongoing/background searches for complex tasks that persist over space and time. For example, being able to predict task continuation can help with “slow search” applications that focus more on result quality than the near instantaneous retrieval of search results [46]. • Conversational experiences and generative AI: Natural language is an expressive and powerful means of communicating intentions and preferences with search systems. The introduction of clarification questions on search engine result pages (SERPs) [71], progress on conversational search [20], and even “conversations” with documents (where searchers can inquire about document content via natural language dialog) [49], enable these systems to engage more fully with searchers to better understand their tasks and goals. There are now many emerging opportunities to better understand and support more tasks via large-scale foundation models such as GPT-4[3] and DALL·E 3,[4] including offering conversational task assistance via chatbots such as ChatGPT.5 All of these advances, and others, have paved the way for the emergence of AI copilots, assistive agents that can help people tackle complex search tasks. [1] https://www.verifiedmarketresearch.com/product/task-management-softwaremarket/ [2] https://blogs.microsoft.com/blog/2023/02/07/reinventing-search-with-a-new-aipowered-microsoft-bing-and-edge-your-copilot-for-the-web/ [3] https://openai.com/gpt-4 [4] https://openai.com/dall-e-3 [5] https://openai.com/chatgpt
Navigating Complex Search Tasks with AI Copilots:...
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