Title :
Accuracy evaluation of classical integer order and direct non-integer order based numerical algorithms of non-integer order derivatives and integrals computations
Author :
Brzezinski, Dariusz W. ; Ostalczyk, Piotr
Author_Institution :
Inst. of Appl. Comput. Sci., Lodz Univ. of Technol., Lodz, Poland
Abstract :
In this paper the authors evaluate in context of numerical calculations accuracy classical integer order and direct non-integer based order numerical algorithms of non-integer orders derivatives and integrals computations. Classical integer order based algorithm involves integer and fractional order differentiation and integration operators concatenation to obtain non-integer order. Riemann-Liouville and Caputo formulas are applied to obtain directly derivatives and integrals of non-integer orders. The following accuracy comparison analysis enables to answer the question, which algorithm of the two is burdened with lower computational error. The accuracy is estimated applying non-integer order derivatives and integrals computational formulas of some elementary functions available in the literature of the subject.
Keywords :
algorithm theory; differentiation; Caputo formulas; Riemann-Liouville formulas; direct noninteger order based numerical algorithms; fractional order differentiation; integer order based algorithm; integrals computations; noninteger order derivatives; noninteger orders derivatives; numerical calculations; Accuracy; Algorithm design and analysis; Complexity theory; Computer science; Context; Educational institutions; Estimation;
Conference_Titel :
Computer Science and Information Systems (FedCSIS), 2014 Federated Conference on
Conference_Location :
Warsaw