posterior | The posterior R package | Development Tools library
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kandi X-RAY | posterior Summary
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posterior Key Features
posterior Examples and Code Snippets
def update(self, x):
self.N += 1.
self.p_estimate = ((self.N - 1)*self.p_estimate + x) / self.N
def posterior_predictive_sample(self, X):
# returns a sample from p(x_new | X)
return self.sess.run(self.posterior_predictive, feed_dict={self.X: X})
Community Discussions
Trending Discussions on posterior
QUESTION
I need to filter through a pandas dataframe, and sort one of the columns, returning the number of instances of each value in descending order. I've been able to accomplish this using a dictionary and some other things, but it isn't being returned in pandas format, which is what I need. Apparently, there is a built-in pandas functionality that can do this? What would that be?
This is the tsv that becomes the pandas dataframe:
...ANSWER
Answered 2022-Mar-31 at 19:47IIUC, use value_counts
:
QUESTION
I'm trying to extract 'valid' numbers from text that may or may not contain thousands or millions separators and decimals. The problem is that sometimes separators are ',' and in other cases are '.', the same applies for decimals. I should check if there is a posterior occurrence of ',' or '.' in order to automatically detect whether the character is a decimal or thousand separator in addition to condition \d{3}
.
Another problem I have found is that there are dates in the text with format 'dd.mm.yyyy' or 'mm.dd.yy' that don't have to be matched.
The target is converting 'valid' numbers to float
, I need to make sure is not a date, then remove millions/thousands separators and finally replace ',' for '.' when the decimal separator is ','.
I have read other great answers like Regular expression to match numbers with or without commas and decimals in text or enter link description here which solve more specific problems. I would be happy with something robust (don't need to get it in one regex command).
Here's what I've tried so far but the problem is well above my regex skills:
...ANSWER
Answered 2022-Feb-21 at 12:37You can use
QUESTION
I have the following two functions:
...ANSWER
Answered 2022-Feb-19 at 18:21This isn't really composition, as @mkriger1 pointed out, but if all you want is to "unroll" the list comprehension and inline the function, you could do the following:
Keep in mind that the list comprehension y_pred = [something(x) for x in X]
is equivalent to the code
QUESTION
I am a relative novice to R & ggplot. I am trying to plot an interaction. When I plot the interaction using SPSS - the regression lines go from the y-axis all the way to the opposite edge of the plot:
However, when I use ggplot, the regression lines only go as far as the first and last data point which makes the graph look strange
Is there any way to remedy this and make my ggplot look more like the SPSS plot?
Here is the code I am using
...ANSWER
Answered 2022-Feb-19 at 14:55geom_smooth
has a fullrange
option, which has a default value of FALSE
:
Should the fit span the full range of the plot, or just the data?
Thus, you can use:
QUESTION
I have a dataset from participants that provided liking ratings (on a scale from 0-100) of stimuli associated with rewards of different magnitudes (factor pval, with levels small/medium/large) and delay (factor time, with levels delayed/immediate). A subset of the data looks like this:
...ANSWER
Answered 2022-Feb-14 at 22:54Regarding the first question: As is true of most summary
methods, the returned object is just a summary, and it doesn't contain the information to convert it back to an object like the one that was summarized. However, the original emmGrid
object does have all the needed content.
The other barrier is trying to work from the contrasts you don't want rather than getting the ones you do want. It is usually best to do the means and contrasts in two separate steps. It is quite simple to do:
QUESTION
I want to estimate parameters of negative binomial distribution using MCMC Metropolis-Hastings algorithm. In other words, I have sample:
...ANSWER
Answered 2022-Jan-19 at 21:25Change dnorm
in loglikelihood
to dnbinom
and fix the proposal for prob
so it doesn't go outside (0,1):
QUESTION
I have a sample from PyMC3 and I'm trying to get a cumulative probability from it, e.g. P(X < 0). I currently use this:
...ANSWER
Answered 2022-Jan-12 at 11:32You could approximate the CDF with a kernel density estimate, but I am not convinced that this is better than your current approach:
QUESTION
How can I determine the confidence/credibility intervals for the posterior estimates of a multi-parameter model?
I can get the confidence interval for each parameter separately.
(Currently using bayestestR
, but I don't mind using something else)
ANSWER
Answered 2022-Jan-03 at 17:42Here's one base-R-plotting solution, which plots a 95% highest posterior density region based on a 2-D kernel density estimate:
QUESTION
Hi I am trying to save pyspark dataframe into file but not getting the actual data. Double quotes is removing in csv file. Could you please help me to resolve this issue?
Example:
Raw_Layer:
...ANSWER
Answered 2021-Dec-23 at 06:21You confused the escape
argument with the quote
argument:
QUESTION
When I use the function on some simulated data
...ANSWER
Answered 2021-Dec-17 at 20:48You are able to figure this out by looking at how the summary is created, i.e. running bayesAB:::summary.bayesTest
in the console. Doing this myself I found:
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