Artículos con la etiqueta ‘información’

Unified meta-theory of information, consciousness, time and the classical-quantum universe

Por • 18 sep, 2013 • Category: Filosofía

As time advances in our perceived real world, existing information is preserved and new information is added to history. All the information that may ever be encoded in history must be about some fundamental, unique, atemporal and pre-physical structure: the bare world. Scientists invent model worlds to efficiently explain aspects of the real world. This paper explores the features of and relationships between the bare, real, and model worlds. Time — past, present and future — is naturally explained. Both quantum uncertainty and state reduction are needed for time to progress, since unpredictable new information must be added to history. Deterministic evolution preserves existing information. Finite, but steadily increasing, information about the bare world is jointly encoded in equally uncertain spacetime geometry and quantum matter. Because geometry holds no information independent of matter, there is no need to quantize gravity. At the origin of time, information goes to zero and geometry and matter fade away.



Randomness, Information, and Complexity

Por • 23 ago, 2012 • Category: Ciencia y tecnología

We review possible measures of complexity which might in particular be applicable to situations where the complexity seems to arise spontaneously. We point out that not all of them correspond to the intuitive (or «naive») notion, and that one should not expect a unique observable of complexity. One of the main problems is to distinguish complex from disordered systems. This and the fact that complexity is closely related to information requires that we also give a review of information measures. We finally concentrate on quantities which measure in some way or other the difficulty of classifying and forecasting sequences of discrete symbols, and study them in simple examples.



Control centrality and hierarchical structure in complex networks

Por • 15 jun, 2012 • Category: sociologia

We introduce the concept of control centrality to quantify the ability of a single node to control a directed weighted network. We calculate the distribution of control centrality for several real networks and find that it is mainly determined by the network’s degree distribution. We rigorously prove that in a directed network without loops the control centrality of a node is uniquely determined by its layer index or topological position in the underlying hierarchical structure of the network. Inspired by the deep relation between control centrality and hierarchical structure in a general directed network, we design an efficient attack strategy against the controllability of malicious networks.



Some Remarks on the Value of Information from the Viewpoint of Aristotelian Semantic Triangle

Por • 11 sep, 2011 • Category: Opinion

The purpose of this paper is to make a conceptual analysis on the value of information from a philosophical point of view. In the paper, confining myself to a short philosophical comment, I take the following steps. (1) By referring to the Shannon’s classical paper on communication theory, I reconfirm one of the philosophically basic problems about the value of information, namely, the twisted relation between the elimination of meaning and our common-sense understanding of the value. (2) To elucidate the relation from a philosophical point of view, I take advantage of the Aristotle’s schematic overview called semantic triangle. The schema shows itself to have a systematic and wide-ranging conception. (3) Through analyzing the Aristotelian semantic triagle, I revaluate his philosophical insight that, in order to have a penetrating view of the value of information, we need more light on the value system from the viewpoint of human time, which is contrasted with physical or engineering time. What essentially matters is the relation between human time and Aristotelian common sense. (4) In temporary conclusion, I propose that to focuse attention on human time lead us to an adequate assessment on the crucial divide between quality and quantity in the value of information.



Towards an axiomatic system for Kolmogorov complexity

Por • 4 feb, 2011 • Category: Filosofía

In this paper, we try to extend this work, both by looking at alternative axiomatic systems for plain complexity and by considering potential axiomatic systems for other types of complexity.



Gravity Emerges from Quantum Information, Say Physicists

Por • 28 dic, 2010 • Category: Portada

The new role that quantum information plays in gravity sets the scene for a dramatic unification of ideas in physics.



How facts backfire

Por • 30 ago, 2010 • Category: sociologia

It’s one of the great assumptions underlying modern democracy that an informed citizenry is preferable to an uninformed one. “Whenever the people are well-informed, they can be trusted with their own government,” Thomas Jefferson wrote in 1789. This notion, carried down through the years, underlies everything from humble political pamphlets to presidential debates to the very notion of a free press. Mankind may be crooked timber, as Kant put it, uniquely susceptible to ignorance and misinformation, but it’s an article of faith that knowledge is the best remedy. If people are furnished with the facts, they will be clearer thinkers and better citizens. If they are ignorant, facts will enlighten them. If they are mistaken, facts will set them straight.



Ideas of the century: The philosophy of information (13/50)

Por • 18 ago, 2010 • Category: Ciencia y tecnología, Filosofía

Among our mundane and technical concepts, information is currently one of the most important, widely used yet least understood. Philosophy badly needs to turn its attention to it. This is a quick and dirty way of introducing the philosophy of information (PI), a new and fast growing area of research. Let me now sketch the longer story.