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» Turing computations on ordinals
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CIE
2007
Springer
15 years 1 months ago
Multi-valued Logics, Effectiveness and Domains
Abstract. Effective domain theory is applied to fuzzy logic to give suitable notions of semi-decidable and decidable L-subset. The connection with the notions of fuzzy Turing machi...
Giangiacomo Gerla
FUZZIEEE
2007
IEEE
15 years 1 months ago
A Linguistic Multi-level Weighted Query Language to Represent User Information Needs
An ordinal fuzzy linguistic Information Retrieval System (IRS) based on a multi-level weighting scheme to represent the user queries, in a more flexible way, is proposed. The IRS a...
Enrique Herrera-Viedma, Antonio Gabriel Lóp...
CSR
2010
Springer
15 years 1 months ago
Zigzags in Turing Machines
We study one-head machines through symbolic and topological dynamics. In particular, a subshift is associated to the subshift, and we are interested in its complexity in terms of r...
Anahí Gajardo, Pierre Guillon
STACS
1999
Springer
15 years 1 months ago
A Logical Characterisation of Linear Time on Nondeterministic Turing Machines
The paper gives a logical characterisation of the class NTIME(n) of problems that can be solved on a nondeterministic Turing machine in linear time. It is shown that a set L of str...
Clemens Lautemann, Nicole Schweikardt, Thomas Schw...
CIE
2005
Springer
15 years 3 months ago
Robust Simulations of Turing Machines with Analytic Maps and Flows
In this paper, we show that closed-form analytic maps and flows can simulate Turing machines in an error-robust manner. The maps and ODEs defining the flows are explicitly obtai...
Daniel S. Graça, Manuel Lameiras Campagnolo...