ordinal

问题 My csv input file sometimes has excel serial numbers in the date field. I am using the following code as my input file should never contain dates prior to 01/2000. However, this solution is quite time consuming and I am hoping to find a better solution. Thank you. def DateCorrection(x): if pd.to_datetime(x) < pd.to_datetime('2000-01-01'): return pd.to_datetime(datetime.fromordinal(datetime(1900, 1, 1).toordinal() + int(x) - 2)) else: return pd.to_datetime(x) 回答1: Assuming your input looks

来源： https://stackoverflow.com/questions/57297771/interpretation-of-l-q-c-4-for-logistic-regression

来源： https://stackoverflow.com/questions/57297771/interpretation-of-l-q-c-4-for-logistic-regression

来源： https://stackoverflow.com/questions/57297771/interpretation-of-l-q-c-4-for-logistic-regression

来源： https://stackoverflow.com/questions/57297771/interpretation-of-l-q-c-4-for-logistic-regression

问题 I've found a bug (in my code) that results from String.CompareTo and binary search because my custom IComparer (for the wrapping type) uses String.Compare(x, y, StringComparison.Ordinal) . This is because items.OrderBy(i => i.Name) (where Name is of type string) used to build the Array to search used the string object itself as the IComparable - and such has different rules: The comparison uses the current culture to obtain culture-specific information such as casing rules and the alphabetic

问题 I've found a bug (in my code) that results from String.CompareTo and binary search because my custom IComparer (for the wrapping type) uses String.Compare(x, y, StringComparison.Ordinal) . This is because items.OrderBy(i => i.Name) (where Name is of type string) used to build the Array to search used the string object itself as the IComparable - and such has different rules: The comparison uses the current culture to obtain culture-specific information such as casing rules and the alphabetic

问题 The Whole Error is as follows: " The ordinal 112 could not be located in the dynamic link library D:\GNU-C-compiler\GNUstep\bin\openssl.exe " i've been searching around a lot on the web for a solution to no avail. I recently started getting into encryption using OpenSSL however during the process of installation i installed multiple different version of the software for testing but during my deletion of these other versions i just deleted the folder instead of doing the proper uninstall

问题 This first matrix table1 contains normalized values for 5 names.I need to perform some operations on this matrix and I have to obtain second matrix as shown in table2. Diagonal elements of table2 should obtained by giving rank(ordinal value) to each value.That means highest element is given 5th rank and next 4th 3rd and so on. Remaining elements of table obtained by giving rank to each value starting from 4 because only 4 elements remaining. Because already we are given rank to diagonal

问题 Having a table named books which has the following structure: ╔════════════╦═══════════╦════════╗ ║ LibraryId ║ BookId ║ Price ║ ╠════════════╬═══════════╬════════╣ ║ 123 ║ 9001 ║ 10.99 ║ ║ 123 ║ 9005 ║ 12.99 ║ ║ 123 ║ 9006 ║ 7.99 ║ ║ 124 ║ 8012 ║ 6.49 ║ ║ 124 ║ 9001 ║ 3.19 ║ ║ 124 ║ 9076 ║ 7.39 ║ ╚════════════╩═══════════╩════════╝ How could I do a select that would return the full table, but additionally a field named Ordinal, that "counts" the number of books per library. The result should