By B. Roy Frieden

ISBN-10: 0521009111

ISBN-13: 9780521009119

This evaluate refers back to the 1998 variation of the ebook, ISBN zero 521 63167 X hardback.

I had initially gotten excited while i discovered this publication. However:

I imagine the writer summed it up top with the ultimate sentence of his booklet (P282). I quote him thanking "E.M.Wright, for bringing to my awareness many elements of recent quantum idea, specially its very good mysteries and paradoxes, bringing me brand new as regards to dimension conception, and (hopefully) constraining my enthusiastic forays of thought to stick inside of actual bounds".

In this booklet - I cant support ask yourself on the relevance of together with sketches of pictures of well-known humans akin to: J.A. Wheeler (P2), R.A. Fisher (P23), L. Brillouin (P66) and at last the writer himself (P73). Are the images a lead as much as justify the inclusion of his personal portrait ?

I begun getting a piece involved for the veracity of the author's "science" whilst he started to use an anthropic kind of argument, (P218). for instance, he states "Thus, the values of (universal) constants are one way or the other scaled to deal with the presence of humans. this can be flattering if actual: it implies that our presence has a profound - if oblique - influence upon actual legislation and, as a result, the Universe!", (his exclamation mark, now not mine).

On a extra simple point, there has been no nomenclature checklist for the variables utilized in the equations in the course of the textual content. This made it a bit tough to persist with the that means of a few equations. besides the fact that, the math used to be provided at an exceptional level.

Readers drawn to B. Roy Frieden may well prefer to hunt down additional information utilizing Wikipedia

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**Additional resources for Science from Fisher Information: A Unification**

**Example text**

10 and 14. The system consisting of quantities y, Ł, x is a closed, or physically isolated, one. ) However, no particle is after all truly isolated. How, then, can assuming a state of isolation give the correct answer? Surprisingly, the answer is largely one of mathematics. Let amplitude functions q n (x), n ¼ 1, . , N describe N different phenomena. 34) consists of one differential equation for each phenomenon n. 34) for phenomenon n will not, then, depend upon other amplitudes q m (x), m 6¼ n.

12f). By the Legendre condition of Secs. 3 and 34 What is Fisher information? 4 the extremum is a minimum. What then should be the nature of the solution p(x) to the problem? The following tendencies will be found in Sec. 7. The more spread out and smooth the law p(x) is the more random is x, and the more disordered the system is; therefore, the smaller the information I should be. Thus, solving a problem I ¼ min: should give the smoothest law p(x) possible. Let us see whether using the principal value of the information gives this kind of result.

14) may be taken in any order. Graphically, this means that, if the curve p(x n ) undergoes a rearrangement of its points (x n , p(x n )), although the shape of the curve will drastically change the value of 36 What is Fisher information? H remains constant. H is then said to be a global measure of the behavior of p(x n ). By comparison, the discrete form of Fisher information I is, from Eq. 2), X [ p(x nþ1 ) À p(x n )]2 : (1:15) I ¼ ˜x À1 p(x n ) n If the curve p(x n ) undergoes a rearrangement of points x n as above, discontinuities in p(x n ) will now occur.

### Science from Fisher Information: A Unification by B. Roy Frieden

by David

4.5