844 research outputs found

    The PageRank Axioms

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    This talk introduces the first graph-theoretic, ordinal representation theorem for the PageRank algorithm, bridging the gap between page ranking algorithms and the formal theory of social choice

    An Axiomatic Approach to Personalized Ranking Systems

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    Personalized ranking systems and trust systems are an essential tool for collaboration in a multi-agent environment. In these systems, trust relations between many agents are aggregated to produce a personalized trust rating of the agents. In this paper we introduce the first extensive axiomatic study of this setting, and explore a wide array of well-known and new personalized ranking systems. We adapt several axioms (basic criteria) from the literature on global ranking systems to the context of personalized ranking systems, and prove strong properties implied by the combination of these axioms

    Nonmanipulable Selections from a Tournament

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    A tournament is a binary dominance relation on a set of alternatives. Tournaments arise in many contexts that are relevant to AI, most notably in voting (as a method to aggregate the preferences of agents). There are many works that deal with choice rules that select a desirable alternative from a tournament, but very few of them deal directly with incentive issues, despite the fact that game-theoretic considerations are crucial with respect to systems populated by selfish agents. We deal with the problem of the manipulation of choice rules by considering two types of manipulation. We say that a choice rule is emph{monotonic} if an alternative cannot get itself selected by losing on purpose, and emph{pairwise nonmanipulable} if a pair of alternatives cannot make one of them the winner by reversing the outcome of the match between them. Our main result is a combinatorial construction of a choice rule that is monotonic, pairwise nonmanipulable, and onto the set of alternatives, for any number of alternatives besides three

    sj-docx-1-tam-10.1177_17588359231157633 – Supplemental material for A rapidly evolving landscape: immune checkpoint inhibitors in pretreated metastatic endometrial cancer

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    Supplemental material, sj-docx-1-tam-10.1177_17588359231157633 for A rapidly evolving landscape: immune checkpoint inhibitors in pretreated metastatic endometrial cancer by Anna V. Tinker, Neesha C. Dhani, Prafull Ghatage, Deanna McLeod, Vanessa Samouëlian, Stephen A. Welch and Alon D. Altman in Therapeutic Advances in Medical Oncology</p

    The world of Robert Altman : Auteur, Innovator and Iconoclast

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    Filmmaker Ron Mann’s recent documentary Altman (2014), features interviews with various notable filmmakers and actors who worked with Robert Altman over the years. Mann said that people who come to see his documentary “just to see Bob’s films” then he has done his job. Mann also more poignantly said that “Altman was America’s greatest filmmaker and that his work matters more than ever now because it stands in contrast to all the sequels that Hollywood makes to sell lunch boxes”. (Gilbey, 2015)1 This quote encapsulates what Robert Altman stood for as a film director in that it illustrates his innovative approaches to filmmaking, his maverick tendencies and individuality. His vision, creativity and independence are a testament to his influential legacy which continues to inspire film makers today. Author keywords: Altman, film noir, satire, anti-western, ensemble, mystery, Hollywood and Studio Syste

    Posthumous Queer: Hemingway Among Others

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    Challenges the common assumption that posthumous texts introducing unconventional sexual themes like The Garden of Eden have more authority than previously published works by the same author. Altman concludes that it is a mistake to use the novel’s manuscript to debunk earlier Hemingway scholarship regarding gender and sexuality

    Beyond closing the gap: valuing diversity in Indigenous Australia

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    In his Apology speech the Prime Minister attempted to balance the symbolic with the practical while emphasising that ‘business as usual’ is not working. Ultimately though, the \u27Closing the Gap\u27 approach is business as usual that fails to value Indigenous difference and fails to accommodate Indigenous aspirations in all their diversity. Unless we get beyond CTG, the next phase in Indigenous policy making and program investments is as ‘destined to fail’ as previous approaches. This paper advocates for the pendulum to swing back, to accommodate and value diversity and difference rather than just statistical equality. In doing so, the author provides some reflexive comment as an academic on these policy swings. In 2005, Tim Rowse and Jon Altman wrote a piece on Indigenous policy that contrasted the contending approaches of economics and anthropology to Indigenous affairs policy: the first emphasising equality of socioeconomic outcomes, the second the facilitation of choice and self-determination. The former implies integration, the latter adherence to different and diverse life worlds. Over time, the author has used economics and official statistics to highlight socioeconomic disadvantage and neglect, while at the same time using anthropology to critique any approach that uses mainstream social indicators that only reflect the dominant society’s social norms. This paper will continue in the same vein using a dual disciplinary approach. However, without being over-reflexive, as an anthropologist of development he is clearly uncomfortable with the current dominance of the \u27Closing the Gap\u27 framework. This paper was presented at the Centre for Public Policy\u27s \u27Values &amp; Public Policy\u27 conference in February 2009. Jon Altman is Professor and the inaugural Director of the Centre for Aboriginal Economic Policy Research established in 1990. He is currently researching Indigenous development and economic hybridity as ARC Australian Professorial Fellow.&nbsp

    Time to organize the bioinformatics resourceome

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    The initial steps toward a bioinformatics resourceome are clear. First, an overall ontology with the high-level concepts (algorithms, databases, organizations, papers, people, etc.) must be created, with a set of standard attributes and a standard set of relations between these concepts (e.g., people publish papers, papers describe algorithms or databases, organizations house people, etc.). The initial ontology should be compact and built for distributed collaborative extension. Second, a mechanism for people to extend this ontology with subconcepts in order to describe their own resources should be designed. The precise location of a tool within a taxonomy is not critical—the author will place it somewhere based on the location of similar/competing resources or based on a best-informed guess. Others may create links to the resource from other appropriate locations in the taxonomy in order to ensure that competing interpretations of the appropriate conceptual location for the resource are accommodated. Third, the formats for the ontologies and the resource descriptions should be published so enterprising software engineers can create interfaces for surfing, searching, and viewing the resources. The resulting distributed system of resource descriptions would be extensible, robust, and useful to the entire biomedical research community

    Encyclopedia of African American heritage

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    Offers a wealth of information on both African and African American history, politics, culture, people, and places. Entries describe the rich tapestry woven by Africans, from those who remained on their ancestral continent, to those who were forced to leave their homes, and to the great strides being made by African Americans today. New to this edition are entries on affirmative action, criminal justice, labor, and property rights. This edition also contains an expanded art programs with 52 new b&w photos and 6 new maps. Altman is author of two books for young readers on the Black American experience
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