Search Results for author: Alessandra Palmigiano

Found 4 papers, 0 papers with code

Outlier detection using flexible categorisation and interrogative agendas

no code implementations19 Dec 2023 Marcel Boersma, Krishna Manoorkar, Alessandra Palmigiano, Mattia Panettiere, Apostolos Tzimoulis, Nachoem Wijnberg

Building on formal concept analysis (FCA), the starting point of the present work is that different ways to categorize a given set of objects exist, which depend on the choice of the sets of features used to classify them, and different such sets of features may yield better or worse categorizations, relative to the task at hand.

Meta-Learning Outlier Detection

Flexible categorization for auditing using formal concept analysis and Dempster-Shafer theory

no code implementations31 Oct 2022 Marcel Boersma, Krishna Manoorkar, Alessandra Palmigiano, Mattia Panettiere, Apostolos Tzimoulis, Nachoem Wijnberg

The framework developed in this paper provides a formal ground to obtain and study explainable categorizations from the data represented as bipartite graphs according to the agendas of different agents in an organization (e. g.~an audit firm), and interaction between these through deliberation.

Vector spaces as Kripke frames

no code implementations15 Aug 2019 Giuseppe Greco, Fei Liang, Michael Moortgat, Alessandra Palmigiano, Apostolos Tzimoulis

In this paper, we build on this observation and extend it to a `vector space semantics' for the \emph{general} Lambek calculus, based on \emph{algebras over a field} $\mathbb{K}$ (or $\mathbb{K}$-algebras), i. e. vector spaces endowed with a bilinear binary product.

Toward a Dempster-Shafer theory of concepts

no code implementations14 Aug 2019 Sabine Frittella, Krishna Manoorkar, Alessandra Palmigiano, Apostolos Tzimoulis, Nachoem M. Wijnberg

In this paper, we generalize the basic notions and results of Dempster-Shafer theory from predicates to formal concepts.

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