mean Questions
3
Solved
Is there a way to avoid using specific values when applying sum and mean in numpy?
I'd like to avoid, for instance, the -999 value when calculating the result.
In [14]: c = np.matrix([[4., 2.],[4...
4
Solved
I am new to programming so I apologize in advance if this question does not make any sens.
I noticed that when I try to calculate the mean value of a pandas data frame with a date time object form...
3
Solved
How do I get the mean for all of the values (except for NaN) in a pandas dataframe?
pd.DataFrame.mean() only gives the means for each column (or row, when setting axis=1), but I want the mean ove...
25
Solved
3
I'm trying to allow users to see trending posts. The general idea is to sort by the most recent posts (_id: -1) and then sort those by most upvotes (upvotes_count: -1) and then limiting the results...
6
Solved
I have a time series x_0 ... x_t. I would like to compute the exponentially weighted variance of the data. That is:
V = SUM{w_i*(x_i - x_bar)^2, i=1 to T} where SUM{w_i} = 1 and x_bar=SUM{w_i*x_i}...
Iover asked 6/4, 2012 at 21:20
5
I got an error like this :
[ts] Argument of type 'Company' is not assignable to parameter of type
'Company[]'. Property 'includes' is missing in type 'Company'.
When I'd like to insert an Arr...
3
How do I compute the weighted mean in R?
For example, I have 4 elements of which 1 element is of size (or: length, width, etc.) 10 and 3 elements are of size 2.
> z = data.frame(count=c(1,3)...
Screen asked 12/6, 2012 at 0:6
2
I want to fill in the missing values of two columns with the mean method. I type of the two columns is float64.
df['col1'].dtypes
dtype('float64')
df['col2'].dtypes
dtype('float64')
I used two met...
Filings asked 17/7, 2023 at 15:30
2
Solved
I wrote below code using PyTorch and ran into the runtime error:
tns = torch.tensor([1,0,1])
tns.mean()
---------------------------------------------------------------------------
RuntimeError Trac...
Conny asked 29/11, 2021 at 17:57
7
Solved
I need to get the mean of all columns of a large data set using R, grouped by 2 variables.
Lets try it with mtcars:
library(dplyr)
g_mtcars <- group_by(mtcars, cyl, gear)
summarise(g_mtcars, mea...
4
Solved
In R, I have two vectors:
a <- c(1, 2, 3, 4)
b <- c(NA, 6, 7, 8)
How do I find the element-wise mean of the two vectors, removing NA, without a loop? i.e. I want to get the vector of
(1,...
4
a=c(1,2,NA,4)
b=c(10,NA,30,40)
weighted.mean(a,b,na.rm = T)
The above code gives me NA as the answer, I think na.rm only ignores the NA values in vector a and not b. How can I ignore the NA in ...
2
Solved
I have a movie dataframe with movie names, their respective genre, and vector representation (numpy arrays).
ID Year Title Genre Word Vector
1 2003.0 Dinosaur Planet Documentary [-0.55423898, -0.7...
2
Solved
I have a pandas DataFrame consisting of some sensor readings taken over time like this:
diode1 diode2 diode3 diode4
Time
0.530 7 0 10 16
1.218 17 7 14 19
1.895 13 8 16 17
2.570 8 2 16 17
3.240 14 ...
Distefano asked 17/3, 2017 at 19:36
7
Solved
Is there a method in numpy for calculating the Mean Squared Error between two matrices?
I've tried searching but found none. Is it under a different name?
If there isn't, how do you overcome this...
Ulbricht asked 27/5, 2013 at 13:59
3
Solved
I got run time error:
Failed to execute 'open' on 'XMLHttpRequest': Invalid URL
Error: Failed to execute 'open' on 'XMLHttpRequest': Invalid URL
at http://localhost:8100/build/polyfills.js:3:...
2
id gender status dept var1 var2 salary
0 P001 M FT DS 2.0 8.0 NaN
1 P002 F PT FS 3.0 NaN 54.0
2 P003 M NaN AWS 5.0 5.0 59.0
3 P004 F FT AWS NaN 8.0 120.0
4 P005 M PT DS 7.0 11.0 58.0
5 P006 ...
3
Solved
I essentially have a confusion matrix of size n x n with all my diagonal elements being 1.
For every row, I wish to calculate its mean, excluding the 1, i.e. excluding the diagonal value. Is ther...
Aurignacian asked 7/6, 2020 at 19:51
5
Solved
I have a data frame df with rows that are duplicates for the names column but not for the values column:
name value etc1 etc2
A 9 1 X
A 10 1 X
A 11 1 X
B 2 1 Y
C 40 1 Y
C 50 1 Y
I need to aggre...
Kaiserslautern asked 29/6, 2013 at 18:51
2
Solved
I have the following dataframe:
date id cars
2012 1 4
2013 1 6
2014 1 NaN
2012 2 10
2013 2 20
2014 2 NaN
Now, I want to get the mean of cars over the years for each id ignoring the NaN's. T...
Melgar asked 31/5, 2017 at 12:33
2
Solved
I am wondering what the fastest way for a mean computation is in numpy. I used the following code to experiment with it:
import time
n = 10000
p = np.array([1] * 1000000)
t1 = time.time()
for x in...
6
Solved
I'm building a MEAN app.
This is my Username schema, the username should be unique.
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
module.exports = mongoose.model('User', new ...
Unnatural asked 2/6, 2015 at 10:45
3
Solved
I would like to create a data frame with several different columns containing means, after which the sd is shown in brackets. To give an example:
df <- iris
mean <- aggregate(df[,1:4], list...
Cleliaclellan asked 15/3, 2019 at 10:44
4
I am creating a web app using the mean stack in angular 6 but I am getting below error message on the browser console.
"Refused to load the font '<URL>' because it violates the following
...
Throwaway asked 28/5, 2018 at 6:5
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