How to calculate the R^2 and RMSE considering multiple points against the mean python Question: I want to compare the categories points against the mean for each key. Assume the predicted value is the mean but the actual value is ( four separate values ) df = {‘Key’: [‘1’, ‘2’,’3′, ‘4’,’1′, ‘2’,’3′, ‘4’,’1′, ‘2’,’3′, ‘4’,’1′, …
How to compute one mean dataset of 4 datasets [Python, xarray] Question: I’m having 4 [GFS] temperature datasets: they are all the same in spatial resolution, the only difference is timestamp – they are for 00 UTC, 06 UTC, 12 UTC, 18 UTC within one day. I need to compute the mean daily temperature dataset. …
How to store a tuple of floats into a file, open and read it to extract the mean per column? Question: I am computing the following scores iteratively which generates a new set of the following scores in each iteration: add_score, keep_score, del_score = get_corpus_sari_operation_scores(sources, prediction, references) I first want to store them into a …
Function to trim a list and calculate mean of remaining numbers Question: I need a function that takes a list of numbers as the input and an optional integer keyword argument trim (that takes on values of 0 or larger). I want to remove the largest and smallest numbers from the list and Return the …
Efficient algorithm for online Variance over image batches Question: I have a large amount of images and want to calculate the variance (of each channel) across all of them. I’m having problem finding an efficient algorithm / setup for that. I read on of the Welford’s online algorithm but it is way to slow as …
Finding mean/SD of a group of population and mean/SD of remaining population within a data frame Question: I have a pandas data frame that looks like this: id age weight group 1 12 45 [10-20] 1 18 110 [10-20] 1 25 25 [20-30] 1 29 85 [20-30] 1 32 49 [30-40] 1 31 70 [30-40] …
Creating a function that calculate the mean with out using a built in function on python Question: Hi I am trying to create a function that will calculate the mean of a column in a dataframe, without using python built in functions. This is how I did it initially A B 0 180.0 70 1 …
How to sort the images by filename, and then calculate the standard deviation and mean (Python) Question: I would like to ask if is there any method to sort the filename (ascending order) of the image files first, followed by doing the calculation of the standard deviation and mean of each image file? dir_path = …
How do I average row values using Python and create a new data frame? Question: I’m currently working with a data frame. Data The year goes all the way to 2022. What I’m trying to do is create a new dataframe that has two columns. 1)Year 2)Average of the ‘extent’ column for those corresponding years. …
How to replace irrelevant data into mean values? Question: Let’s say I have 600,000 data points in column for age. In the data there are values 0 and -1, which is not relevant for age. How can I change both 0 and -1 values in my data to the column mean value using python? The …
