All Questions
9
questions with bounties
6
votes
1
answer
55
views
+50
What do the terms "nearly-optimal rate", "near-minimax rate", "minimax optimal rate" and "minimax rate" mean in the context of posterior consistency?
Definition: A sequence $\epsilon_n$ is a posterior contraction rate at the parameter $θ_0$ if $$\Pi_n(θ: d(θ, θ_0) ≥ M_n \epsilon_n| X^{(n)}) → 0$$ in $P^{(n)}_{θ_0}$-probability, for every $M_n → ∞$.
...
- 222
1
vote
0
answers
44
views
+50
Take into account uncertainty in ground-truth in a classification
I need to evaluate the accuracy of a prediction model (binary classification), given that I have some kind of uncertainty on the ground truth measurement.
The model predicts the occurrence of an event ...
- 61
0
votes
0
answers
31
views
+50
Clustering by using Locality sensitive hashing *after* Random projection
It is well known that Random Projection (RP) is tightly linked to Locality Sensitive Hashing (LSH). My goal is to cluster a large number of points lying in a $d$-dimensional Euclidean space, where $d$ ...
1
vote
0
answers
93
views
+50
Deriving ADF unit root test form for the time series with quadratic deterministic trend
I have the following time series process $y_t $
$$\Delta y_t = \delta + \gamma t + \epsilon_t$$
where $e_t$ is white noise process with the variance of $\sigma^2$.
I guess that whereas $\Delta y_t$ is ...
- 976
0
votes
0
answers
29
views
+50
Spearman's partial correlation in R : ppcor or RVAideMemoire?
which is preferable for Spearman's ? RVAideMemoire::pcor.test() or ppcor::pcor.test() ?
I'm running a set of partial ...
- 471
4
votes
0
answers
536
views
+50
Sample size vs Number of samples in calculating standard error
Suppose a survey was given to 100 people (the response is just a number between 0 and 1) and only the mean was reported. So 1 sample was taken with n = 100.
Now suppose this was repeated 20 times. ...
- 41
2
votes
1
answer
55
views
+50
justification for 'population prediction intervals'?
Suppose we are living in a frequentist world and want to compute confidence intervals on some quantity that is a complicated function of the parameters $q_1 = f(\Theta)$ (i.e., there's no closed-form ...
- 36.2k
3
votes
0
answers
125
views
+100
What kind of study design is this and what kind of statistical analysis should be suitable?
I plan to conduct a study in which respondents will be asked to solve total 6 puzzles together.
Is there a specific study design (name) for this?
The scenario would be:
First, ...
1
vote
1
answer
60
views
+100
When the sample mean converges to the population mean, does the probability that the sample mean is equal to the population mean tend to 0?
Let $y_1, y_2, \ldots , y_N$ be arbitrary real numbers and suppose a process of simple random sampling without replacement that selects $n$ out of $N$ elements. Then suppose that these $N$ elements ...
- 63