1,720,962 research outputs found
An ordinal well posedness property
No full textThe aim of this paper is to give, for Nash equilibria, a well
posedness criterion in the form of an ordinal property. This property is im-
portant for games because it captures the case when players' decisions depend
on preferences and not on a special choice of an utility function. The ordinal
characteristics of this well posedness criterion comes from considering value
bounded approximate equilibria
(epsilon,k) Equilibria and Well-posedness
No full textThe aim of this paper is to discuss a new concept
of well-posedness for non cooperative games.
Starting from the definition of (e,k)- equilibrium as the point
where
every player either guarantees at least ''k'' or he (she) does not lose more than ''e'', we introduce an original definition of
well-posedness.
We study characterizations of this well-posedness and its relations with the more known Tikhonov well-posedness.
We prove that this well-posedness is an ordinal property if the payoff
functions are bounded from below
Potential games and well posedness properties
No full textThe aim of this paper is to study Potential Games which are a
special class of games; in fact their properties are dictated by a
single function called the potential function. We consider
Tihkonov well-posedness and other well posedness properties
introduced by the authors in previous papers. We relate these
properties with the Tihkonov well posedness of the potential
function as maximum problem
On Tikhonov well-posedness of concave games and Cournot oligopoly
No full textThe purpose of this paper is to investigate whether
theorems known to guarantee the existence and uniqueness for Nash equilibria, provide also
sufficient conditions for the Tikhonov well-posedness.
We have considered several hypotheses that ensure existence and uniqueness of a Nash equilibrium These assumptions imply existence and uniqueness of a
Nash equilibrium but not all assure the well posedness property. We use the oligopoly Cournot model to apply the obtained resuls
A New Approach to Tikhonov Well-Posedness for Nash Equilibria
No full textIt is suggested a new approach to Tihkonov well-posedness for Nash equilibria. The novelty of our approach consists in a suitable definition
of what could be considered an approximate solution for a Nash equilibrium problem.
Furthermore it can be proved that this property of well-posedness is preserved under monotonic trasformation of the payoffs: a relevant result for economic interpretation
Metric characterizations of Tikhonov well posedness in value
No full textIn this paper we give metric characterizations for a property of well posedness called Tikhonov well posedness in value and introduced in a previous pape
Stackelberg Well-posedness and Hierarchical Potential Games
No full textThe aim of this paper is to study Potential Games which are a
special class of games; in fact their properties are dictated by a single function called the potential function. We consider Tihkonov well-posedness and Stackelberg well-posedness of these games, the latter in both the optimistic and pessimistic cases
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
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