Python filter larger text by quantile Question: Assume I am process a very large text file, I have the following pseudocode xx_valueList = [] lines=[] with line in file: xx_value = calc_xxValue(line) xx_valueList.append(xx_value) lines.append(lines) # get_quantile_value is a function return the cutoff value with a specific quantile precent cut_offvalue = get_quantile_value(xx_valueList, precent=0.05) for line in …
How to replace variable with groupby using values from quantiles in python Question: I have a df as shown below: >>> df.head() group_type value G1 125.23 G1 107.19 G1 117.37 G1 102.68 G2 185.58 G1 82.31 G2 21.82 G2 168.21 G2 134.17 G1 71.45 I have calculated the quantile values within each group as below: …
Numpy function to get the quantile that corresponds to a given value Question: I see a lot of questions like this one for R, but I couldn’t find one specifically for Python, preferably using numpy. Let’s say I have an array of observations stored in x. I can get the value that accumulates q * …
Find different percentile for every group in data frame Question: I have the date frame with the following structure: df = pd.DataFrame({‘GROUP_ID’: np.random.randint(1, 7, size=100), ‘VALUES’: np.random.randint(0, 50, size=100)}) df[‘THRESHOLD’] = df[‘GROUP_ID’]*5 df = df[[‘GROUP_ID’,’VALUES’,’THRESHOLD’]] df.sort_values(by=’GROUP_ID’, inplace=True) (this one is just for example) A column THRESHOLD is actually a percentile (in %) for every group. …
How to calculate a percentile ranking of a column of data relative to another column using python Question: I have two columns of data representing the same quantity; one column is from my training data, the other is from my validation data. I know how to calculate the percentile rankings of the training data efficiently …
what's the inverse of the quantile function on a pandas Series? Question: The quantile functions gives us the quantile of a given pandas series s, E.g. s.quantile(0.9) is 4.2 Is there the inverse function (i.e. cumulative distribution) which finds the value x such that s.quantile(x)=4 Thanks Asked By: Mannaggia || Source Answers: There’s no 1-liner …
