Back close

Comment on’Interpretation of the Lempel-Ziv Complexity Measure in the context of Biomedical Signal Analysis’

Publication Type : Journal Article

Publisher : arXiv preprint arXiv:1308.0130

Source : arXiv preprint arXiv:1308.0130 (2013)

Url :

Campus : Coimbatore

School : School of Engineering

Center : Electronics Communication and Instrumentation Forum (ECIF)

Department : Electronics and Communication

Verified : Yes

Year : 2013

Abstract : In this Communication, we express our reservations on some aspects of the interpretation of the Lempel-Ziv Complexity measure (LZ) by Mateo et al. in Interpretation of the Lempel-Ziv complexity measure in the context of biomedical signal analysis, IEEE Trans. Biomed. Eng., vol. 53, no. 11, pp. 2282-2288, Nov. 2006. In particular, we comment on the dependence of the LZ complexity measure on number of harmonics, frequency content and amplitude modulation. We disagree with the following statements made by Mateo et al. 1. LZ is not sensitive to the number of harmonics in periodic signals. 2. LZ increases as the frequency of a sinusoid increases. 3. Amplitude modulation of a signal doesnot result in an increase in LZ. We show the dependence of LZ complexity measure on harmonics and amplitude modulation by using a modified version of the synthetic signal that has been used in the original paper. Also, the second statement is a generic statement which is not entirely true. This is true only in the low frequency regime and definitely not true in moderate and high frequency regimes.

Cite this Research Publication : Dr. Karthi Balasubramanian, Prabhu, G. R., and Nagaraj, N., “Comment on'Interpretation of the Lempel-Ziv Complexity Measure in the context of Biomedical Signal Analysis'”, arXiv preprint arXiv:1308.0130, 2013.

Admissions Apply Now