For any 1 1 measure-preserving map T of a probability space, consider the [T, T &1 ] endomorphism and the corresponding decreasing sequence of \_-algebras. We demonstrate that if the decreasing sequence of \_-algebras generated by [T, T &1 ] and [S, S &1 ] are isomorphic, then T and S must have equa
On the entropy of a class of constrained random walks
โ Scribed by Ido Dayan; Moshe Gitterman; George H. Weiss
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 502 KB
- Volume
- 183
- Category
- Article
- ISSN
- 0378-4371
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โฆ Synopsis
We define and calculate the entropy of some random walks which have two endpoints fixed, and for which displacements are allowed to take all possible values. An example is given in which the entropy can either be increased or decreased by imposing a constraint. It is also shown, by example, that when the constrained entropy approaches its unconstrained value, the rate of approach is asymptotically (?((In n)/n).
๐ SIMILAR VOLUMES
This paper extends the research of Wiegel (J. Math. Phys. 21 (1980) 2111) on random walks which differ from free random walks through the occurrence of an extra weightfactor ( 1) at every crossing of a half-line. Starting from a new closed-form expression for the weight distribution of these walks,
Betweenness is a measure of the centrality of a node in a network, and is normally calculated as the fraction of shortest paths between node pairs that pass through the node of interest. Betweenness is, in some sense, a measure of the influence a node has over the spread of information through the n