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» Turing computations on ordinals
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CIE
2007
Springer
15 years 10 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 10 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 10 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 10 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 11 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...