20,662 research outputs found
ToyArchitecture: Unsupervised Learning of Interpretable Models of the World
Research in Artificial Intelligence (AI) has focused mostly on two extremes:
either on small improvements in narrow AI domains, or on universal theoretical
frameworks which are usually uncomputable, incompatible with theories of
biological intelligence, or lack practical implementations. The goal of this
work is to combine the main advantages of the two: to follow a big picture
view, while providing a particular theory and its implementation. In contrast
with purely theoretical approaches, the resulting architecture should be usable
in realistic settings, but also form the core of a framework containing all the
basic mechanisms, into which it should be easier to integrate additional
required functionality.
In this paper, we present a novel, purposely simple, and interpretable
hierarchical architecture which combines multiple different mechanisms into one
system: unsupervised learning of a model of the world, learning the influence
of one's own actions on the world, model-based reinforcement learning,
hierarchical planning and plan execution, and symbolic/sub-symbolic integration
in general. The learned model is stored in the form of hierarchical
representations with the following properties: 1) they are increasingly more
abstract, but can retain details when needed, and 2) they are easy to
manipulate in their local and symbolic-like form, thus also allowing one to
observe the learning process at each level of abstraction. On all levels of the
system, the representation of the data can be interpreted in both a symbolic
and a sub-symbolic manner. This enables the architecture to learn efficiently
using sub-symbolic methods and to employ symbolic inference.Comment: Revision: changed the pdftitl
A contextual behavioral approach to the study of (persecutory) delusions
Throughout the past century the topic of delusions has mainly been studied by researchers operating at the mental level of analysis. According to this perspective, delusional beliefs, as well as their emergence and persistence, stem from an interplay between (dysfunctional) mental representations and processes. Our paper aims to provide a starting point for researchers and clinicians interested in examining the topic of delusions from a functional-analytic perspective. We begin with a brief review of the research literature with a particular focus on persecutory delusions. Thereafter we introduce Contextual Behavioral Science (CBS), Relational Frame Theory (RFT) and a behavioral phenomenon known as arbitrarily applicable relational responding (AARR). Drawing upon AARR, and recent empirical developments within CBS, we argue that (persecutory) delusions may be conceptualized, studied and influenced using a functional-analytic approach. We consider future directions for research in this area as well as clinical interventions aimed at influencing delusions and their expression
Distorting Legal Principles
Legal principles enable society to order itself by preserving broadly based expectations. Sometimes, however, parties transact in ways that are so inconsistent with generally accepted principles as to create uncertainty or confusion that undermines the basis for reasoning afforded by the principles. Such a distortion might occur, for example, if a normally mandatory legal rule were unexpectedly treated as a default rule. This article explores the problem of distorting legal principles, initially focusing on rehypothecation, a distortion whose uncertainty and confusion contributed to the downfall of Lehman Brothers and the resulting global financial crisis. But not all distortions are, on balance, harmful; sometimes they represent a positive evolution of law. To this end, the article also seeks to construct a normative framework for determining how government lawmakers, judges, and lawyers should address distortions of legal principles
Weaving Rules into [email protected] for Embedded Smart Systems
Smart systems are characterised by their ability to analyse measured data in
live and to react to changes according to expert rules. Therefore, such systems
exploit appropriate data models together with actions, triggered by
domain-related conditions. The challenge at hand is that smart systems usually
need to process thousands of updates to detect which rules need to be
triggered, often even on restricted hardware like a Raspberry Pi. Despite
various approaches have been investigated to efficiently check conditions on
data models, they either assume to fit into main memory or rely on high latency
persistence storage systems that severely damage the reactivity of smart
systems. To tackle this challenge, we propose a novel composition process,
which weaves executable rules into a data model with lazy loading abilities. We
quantitatively show, on a smart building case study, that our approach can
handle, at low latency, big sets of rules on top of large-scale data models on
restricted hardware.Comment: pre-print version, published in the proceedings of MOMO-17 Worksho
A semantic-based platform for the digital analysis of architectural heritage
This essay focuses on the fields of architectural documentation and digital representation. We present a research paper concerning the development of an information system at the scale of architecture, taking into account the relationships that can be established between the representation of buildings (shape, dimension, state of conservation, hypothetical restitution) and heterogeneous information about various fields (such as the technical, the documentary or still the historical one). The proposed approach aims to organize multiple representations (and associated information) around a semantic description model with the goal of defining a system for the multi-field analysis of buildings
- âŠ