1,721,052 research outputs found
Logic as a power tool to model negotiation mechanisms in the Semantic Web Era
No full textThe key theme of our research is the modeling of multi-attribute negotiation scenarios with the aid of logic languages, going from very simple (and not so expressive) lan- guages as propositional logic up to more expressive logics, such as Description Logics (DLs).
The approach to multi-attribute negotiation we are investigating on exploits logic languages at least in two ways: (1) to model, through an ontology, relations between attributes to be negotiated and (2) to characterize buyer and seller preferences. Some of the advantages of such an approach are intuitive: the possibility to model disjontness, implication, utilities on bundle of issues are all useful in settings where negotiation is not limited to undifferentiated goods but is based on complex descriptions that require adequate negotiation mechanisms to produce —in an automated way— fair deals.
The research problem is both challenging and very timely for the Semantic Web ini- tiative, because of the undeniable importance of e-commerce and negotiation over the Web and because Description Logics are at the core of Semantic Web languages. In- deed, many recent research efforts have been focused on automated negotiation in var- ious contexts, including e-marketplaces, resource allocation settings, online auctions, supply chain management and, generally speaking, e-business processes. We think that, as it will be outlined in the next sections, DLs can be the pivotal tool in modeling nego- tiation mechanisms in the tumultuous Semantic Web arena
Electronic markets, a look behind the curtains: How can semantic matchmaking and negotiation boost E-commerce?
No full textIn this paper we present an overview of different semantic-based approaches to matchmaking and negotiation in electronic markets, showing how semantics can lead to a new generation of EC systems. We will introduce and briefly review different solutions to solve the two problems in the context of search/retrieval, multiattribute auctions, advertising, just to cite a few, showing the added-value provided by these techniques in so lively environments. The presentation range from strictly semantic-based approaches, to those combining logic languages with utility theory, to most recent ones relying on Semantic Web technologies and Linked Data datasets. © 2010 Springer-Verlag Berlin Heidelberg
A general model for fair and explainable recommendation in the loan domain
No full textRecommender systems have been widely used in the Financial Services domain and can play a crucial role in personal loan comparison platforms. However, the use of AI in this domain has brought to light many opportunities as well as new ethical and legal risks. The customers can trust the suggestions of these systems only if the recommendation process is Interpretable, Understandable, and Fair for the end-user. Since products offered within the banking sector are usually of an intangible nature, customer trust perception is crucial to maintain a long-standing relationship and ensure customer loyalty. To this end, in this paper, we propose a model for generating natural language and counterfactual explanations for a loan recommender system with the aim of providing fairer and more transparent suggestions
Electronic Markets, a Look Behind the Curtains: How Can Semantic Matchmaking and Negotiation Boost E-Commerce?
No full textIn this paper we present an overview of different semantic-based approaches to matchmaking and negotiation in electronic markets, showing how semantics can lead to a new generation of EC systems. We will introduce and briefly review different solutions to solve the two problems in the context of search/retrieval, multiattribute auctions, advertising, just to cite a few, showing the added-value provided by these techniques in so lively environments. The presentation range from strictly semantic-based approaches, to those combining logic languages with utility theory, to most recent ones relying on Semantic Web technologies and Linked Data datasets
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
I bisogni abitativi: caratteri, significati e fattori intervenienti. Una introduzione
No full textNel contributo si propone un'analisi relativa ad alcuni degli aspetti caratterizzanti bisogni e politiche abitative in chiave sociologica. Dopo una prima parte dedicata alla presentazione dei principali caratteri, concetti e significati che connotano il dibattito sulla ‘questione abitativa’; nella seconda si riprendono rapidamente i principali interventi a favore della casa nello specifico contesto dell' Emilia-Romagna, evidenziando gli elementi più significativi emergenti al riguardo dai primi Profili di comunità - documenti di supporto alla programmazione sociale e socio-sanitaria integrata - realizzati in Emilia-Romagna per il trienio 2009-2011
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