home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!olivea!hal.com!decwrl!csus.edu!netcom.com!park
- From: park@netcom.com (Bill Park)
- Newsgroups: comp.theory.dynamic-sys
- Subject: Re: metric entropy
- Summary: Chaos and Order in the Capital Markets
- Keywords: Fractals, chaos, fractal dimension
- Message-ID: <jyqna8m.park@netcom.com>
- Date: 7 Sep 92 19:01:05 GMT
- References: <1488@srtp.UUCP>
- Followup-To: comp.theory.dynamic-sys
- Organization: Netcom - Online Communication Services (408 241-9760 guest)
- Lines: 51
-
- In article <1488@srtp.UUCP> bernard@srt-poste.fr writes:
-
- > I'm looking for references of methods for calculating an estimation of
- > fractal dimension of data sets
- > B. Lemarie
-
- Edgar E. Peters, <Chaos and Order in the Capital Markets. A New View
- of Cycles , Prices, and Market Volatility>, New York, John Wiley
- & Sons, Inc., ISBN 0-471-53372-6 (1991).
-
- The section entitled "The Fractal Dimension" (pp. 155-157, in Chapter
- 12, "The Dynamical Analysis of Time Series") describes the correlation
- integral, which the author describes as "A similar, more practical
- method [than estimating the fractal dimension graphically by covering
- the contour with circles and computing the fractal dimension D as
-
- D = log(N) / log(1/R), where
- N = number of circles of diameter R.]
-
- "The correlation integral Cm(R) is the probability that a pair of
- points in the attractor [Peters is discussing the measurement of the
- fractal dimension of an attractor in a phase space of a chaotic
- system] is within a distance R of one another."
-
- Peters also discusses the Hurst dimension, which is the reciprocal of
- the fractal dimension, and shows how to determine it using a different
- graphical procedure.
-
- Finally, Peters gives several listings of short computer programs for
- various kinds of nonlinear analyses, all in the BASIC language. One
- of them calculates Cm(R) from a data series of up to 2,000 values.
-
- Peters' book is also the best I've found so far on nonlinear dynamics
- applied to analysis of financial time series.
-
- Another excellent book on nonlinear topics is:
-
- Manfred Schroeder, <Fractals, Chos, Power Laws. Minutes from an
- Infinite paradise>, U.S.A., W. H. Freeman and Company,
- ISBN 0-7167-2136-8 (1991).
-
- Schroeder discusses fractal dimensions in at least nine different
- places in this book. The treatments are very brief in comparison to
- Peters' book, but is a much broader work that shows the relationships
- of such concepts from the point of view of a polymath who is
- comfortable in physics, mathematics, engineering, and biology.
-
- Bill Park
- =========
- --
- Grandpaw Bill's High Technology Consulting & Live Bait, Inc.
-