# Tag Info

Accepted

### Pagerank in directed *acyclic* graphs (DAG)

As suggested by the comments (thanks!), the answer is positive and rather easy. We want to compute the pagerank of all vertices of a DAG (Directed Acyclic Graph) $G = (V,E)$ with $n$ vertices and $m$ ...

### Boosting the probability of success(random projections, johnson lindenstrauss)

If the probability of success of an event is $1/n$, then the failure probability is $(1 - 1/n)$. Hence the probability of failure for $n$ independent trials is $(1 - 1/n)^n$. The limit as $n$ goes to ...
• 31
1 vote

### VC dimension in data mining

A range space is just a pair $(X,\mathcal{R})$ where $X$ is a finite or infinite set and a $\mathcal{R}$ is a finite or infinite collection of subsets of $X$ (the elements of $\mathcal{R}$ are called ...
• 569
1 vote
Accepted

### Upper bound on the size of a Concept Lattice (Galois Lattice)?

As told in the previous comments, $min\{2^{|O|}, 2^{|A|}\}$ is a correct upper bound. When the parameter $R$ is also available, we can improve the upper bound to \$min\{2^{|O|}, 2^{|A|}, 2^{1+\sqrt{|...
• 427

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