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Name
COMPUTING AND INFORMATICS
Type
Journal
Items
965 Publications
Compatibility
OpenAIRE Basic (DRIVER OA)
OAI-PMH
http://www.cai.sk/ojs/index.php/cai/oai

 

  • FUNCTION ORIENTED HISTORY REPRESENTATION IN DATABASES

    In the past years the management of temporal data has attracted numerous researchers resulting to a large number of temporal data extensions to the relational and object oriented data models. In this paper, the proposed temporal data model focuses on the functional characteristics of the histories. The paper introduces a set oriented description of the calendars together with a function oriented history concept with a history-algebra. The completeness of the proposed model with respect to the...

    Pair-Wise Temporal Pooling Method for Rapid Training of the HTM Networks Used in Computer Vision Applications

    In the paper, several modifications to the conventional learning algorithms of the Hierarchical Temporal Memory (HTM) -- a biologically inspired large-scale model of the neocortex by Numenta -- have been proposed. Firstly, an alternative spatial pooling method has been introduced, which makes use of a random pattern generator exploiting the Metropolis-Hastings algorithm. The original inference algorithm by Numenta has been reformulated, in order to reduce a number of tunable parameters and to...

    Mapping and dynamic load-balancing strategies for parallel programming

    A fundamental issue affecting the performance of a parallel application running on message-passing parallel system is the assignment of tasks to processors in order to achieve the minimum completion time.  Tools for static and dynamic task assignment can be considered complementary: static mapping tools compute an initial assignment of tasks on processors while dynamic load balancing tools are used at execution time. In this paper, we present a compilation-time two-stage mapping strategy...

    MULTIVALUED DEPENDENCIES AS INFERENCE RULES ON A DEDUCTIVE PROCESS UNDER A RELATIONAL DATA MODEL SET-THEORY APPROACH

    A set-theoretic interpretation of the relational model was proposed by Spyratos and Lecluse [17]. It is also contended [16] that multivalued dependencies (mvd) can be treated as inference rules. In this paper multivalued dependencies  are treated as inference rules rather than as integrity constraints, and an Extended Query Model for deductive query answering is given. The Extended Query Model is considered as an extension of the Query Model [18] because it also includes multivalued depe...

    Z Logic and its Consequences

    This paper provides an introduction to the specification language Z from a logical perspective. The possibility of presenting Z in this way is a consequence of a number of joint publications on Z logic that Henson and Reeves have co-written since 1997. We provide an informal as well as formal introduction to Z logic and show how it may be used, and extended, to investigate issues such as equational logic, the logic of preconditions, the issue of monotonicity and both operation and data refine...
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