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1 vote
1 answer
189 views

Rademacher complexity for a family of bounded, nondecreasing functions?

Let $\{\phi_k\}_{k=1}^K$ be a family of functions mapping from an interval $[a, b]$ to $[-1, 1]$. That is, $\phi_k \colon[ a,b] \to [-1, 1]$ are nondecreasing maps on some finite interval $[a, b] \...
Drew Brady's user avatar
1 vote
1 answer
201 views

Rademacher complexity of function class $(x,y) \mapsto 1[|yf(x)-\alpha| \ge \beta]$ in terms of $\alpha$, $\beta$, and Rademacher complexity of $F$

Let $X$ be a measurable space and let $P$ be a probability distribution on $X \times \{\pm 1\}$. Let $F$ be a function class on $X$, i.e., a collection of (measurable) functions from $X$ to $\mathbb R$...
dohmatob's user avatar
  • 6,824
1 vote
0 answers
93 views

Covering number after projection

In these lecture notes on Statistical Learning Theory we find the following definitions for covering numbers: Definition. Let $(\mathcal{W}, d)$ be a metric space and $\mathcal{F} \subset \mathcal{W}$...
Jonas Metzger's user avatar
2 votes
1 answer
1k views

Rademacher complexity of composition of functions

I am looking for a bound on the empirical Rademacher complexity of the following class: $G=\left\{x \rightarrow \frac{h^T f(x)}{\|h\|_2 \cdot \|f(x)\|_2} : h\in R^d, f()=(f_1(),\ldots,f_d()), f_j \in ...
axk's user avatar
  • 517
2 votes
1 answer
621 views

Extension of Talagrand contraction lemma (on empirical Rademacher complexity)

Is the following true? Let $(x_1,...,x_N)$ be a set of points on the unit sphere $S^{d-1}$. Let $\ell_x: [-1,1]\rightarrow [0,1]$ be a family of Lipschitz functions indexed by $x\in S^{d-1}$, with ...
axk's user avatar
  • 517
2 votes
1 answer
317 views

Recursive parameter estimation for partially observed Ito SDEs

I'm trying to get my head around online (recursive) maximum-likelihood parameter estimation in the language of stochastic processes and in the context of stochastic filtering, i.e. where we have a ...
S.Surace's user avatar
  • 1,675
15 votes
1 answer
1k views

Table with the most seated customers in Chinese restaurant process

Suppose we have some initial configuration of people seated at some tables. We start taking new customers and seat them following Chinese restaurant process. Is there some known work on finding the ...
Stakhanov's user avatar
  • 151