Python Excel file transpose operation

As a test after learning the basic knowledge of Python, I can finally write my own scripts to handle any scenario like RDs, how to write the code elegantly, and then open the advanced version of Python. As the saying goes, “Quantitative changes lead to qualitative changes.” Once the amount of data is too large, […]

Fast transpose of (sparse) matrices C++

Fast transposed sparse matrix algorithm In many applications, especially deep learning, we often encounter matrices in which most of the elements are 0, which are called sparse matrices. Using traditional matrix storage methods wastes a lot of storage space. In order to solve this problem, special storage methods are usually used in data structures to […]

Python: Use the pandas package to complete the transpose operation of excel data

Directory question primary method Import Data Observation data Processing ideas and code Advanced method Import & observe data Processing ideas and code Step by step version: Extract column index Extract row index Extract value Build a new data frame Transpose Function version: Question Due to business requirements, Table A needs to be converted into Table […]

Octave_Matlab_Matrix.html#Matrix_Transpose

In this article, I will provide a simple reference for Matlab and Octave. Octave is a GNU program designed to provide free tools similar to Matlab. I think there may not be 100% compatibility between Octave and Matlab, but I noticed that most basic commands are compatible. I will try to list those commands that […]

About the three operations of matrices in the SSA algorithm: transpose, inversion, and multiplication

1. Matrix transposition // Matrix transpose (two-dimensional matrix) public static double[][] transposeTwo(double[][] matrix) {<!– –> int rows = matrix.length; int cols = matrix[0].length; double[][] transposedMatrix = new double[cols][rows]; for (int i = 0; i < rows; i + + ) {<!– –> for (int j = 0; j < cols; j + + ) {<!– […]

WebGL calculates the lighting effect of moving objects based on the inverse transpose matrix of the model matrix.

Table of Contents Preface Coordinate transformation causes normal vector to change Change pattern: Magic Matrix: Inverse Transposed Matrix Summary of usage of inverse transposed matrix Specifications of setInverseOf and transpose methods of Matrix4 objects (to complete the inversion of the matrix) Sample code (LightedTranslatedRotatedCube.js) Detailed code explanation Example effect Foreword As objects in the scene […]

Easy way to transpose columns and rows in SQL?

This article introduces the simple method of transposing columns and rows in SQL. It has certain reference value for everyone to solve problems. Friends who need it, follow the editor to learn together! Problem description Giveaway a ChatGPT account for a limited time.. How to simply switch columns and rows in SQL? Is there a […]

Transposed ConvolutionTransposed Convolution

Article directory foreword 1. Ordinary convolution operation 2. Transpose convolution operation 3. Transposed convolution parameters in Pytorch 4. Pytorch transposed convolution experiment Note: This blog post is basically all from the little mung bean of the blogger Sunflower. I just moved it here for my own reference and management. I modified a few details myself. […]

15-Extension of Matrix Transpose

Transpose of matrix? Foreword In many cases, the data we get may not arrange the coordinates of the points in the direction of the column. For us humans, the more convenient way is to arrange the coordinates of the point in the direction of the row. We are more familiar with Think of the matrix […]

Combined with PixelShuffle operation, understanding of high-dimensional tensor reshape and transpose dimension exchange

PixelShuffle and tensor dimension reshaping operations Dimensionality swap from matrix transpose to high-dimensional tensor About PixelShuffle Understanding matrix transposition from the base, strides, and address properties of Array Extend the above understanding to high-dimensional tensor arrays and PixelShuffle operations The case of direct reshape without replacing dimensions Summarize Dimension exchange from matrix transpose to high-dimensional […]