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Results tagged with expected-value
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user 331223
The expected value of a random variable is a weighted average of all possible values a random variable can take on, with the weights equal to the probability of taking on that value.
2
votes
1
answer
227
views
Expected value of random walk
Consider a random walk with $S_n=\sum^n_{i=1}X_i$, where the random i.i.d. steps $X_i$ take values $-1,0,2$ with probabilities $1/9,1/9,7/9$ respectively. Set $S_0=1$.
I would like to calculate $E(S_n …
- 309
0
votes
0
answers
161
views
Termination of the random walk
Consider a random walk with $S_n=\sum^n_{i=1}X_i$, where the random i.i.d. steps $X_i$ take values $-1,0,2$ with probabilities $1/9,1/9,7/9$ respectively. Set $S_0=1$.
The walk terminated whenever it …
- 309
6
votes
1
answer
248
views
True Error in Machine Learning
I have read this question and I am confused by a part of the first answer, even though it is asked in the comments.
I don't understand why $$L_{(\mathcal{D}, f)}(h^{*}) = 0 \implies L_{S}(h^{*}) = 0$$ …
- 309