cosine – SyntaxBug

The sparrow search algorithm SCSSA, which combines sine and cosine and Cauchy mutation, is combined with VMD to optimize its two parameters k and penalty coefficient.

?About the author: A Matlab simulation developer who loves scientific research. He cultivates his mind and improves his technology simultaneously. For code acquisition, paper reproduction and scientific research simulation cooperation, please send a private message. Personal homepage: Matlab Research Studio Personal credo: Investigate things to gain knowledge. For more complete Matlab code and simulation customization […]

[Signal Denoising] Optimizing variational mode decomposition SCSSA-VMD based on fused sine-cosine and Cauchy mutation sparrow algorithm to achieve signal denoising with Matlab code

Two-dimensional discrete cosine transform for grayscale images

1. Introduction Discrete Cosine Transform, referred to as DCT transform, can convert spatial domain signals into frequency domain. In this topic, it converts two-dimensional pixel values into two-dimensional frequency signals. 2.Formula 2.1 Two-dimensional discrete cosine transform (2D DCT): Given an input matrix F of N×M (usually M is equal to N, N represents the horizontal […]

Quick calculation of cosine similarity of all sample pairs in PyTorch

PyTorch defines the cosine_similarity function to calculate the cosine similarity between pairs of vectors. However, there is currently no way to calculate the cosine similarity between each pair of vectors in the list. We’ll explore a very simple and effective way to do this in PyTorch. Let’s first look at a formula, which is the […]

[Infrared and visible light image fusion] Infrared and visual image fusion method based on discrete cosine transform and local spatial frequency in the discrete stationary wavelet transform domain (Matlab code implementation)…

?About the author: A Matlab simulation developer who loves scientific research. He cultivates his mind and improves his technology simultaneously. For cooperation on MATLAB projects, please send a private message. Personal homepage: Matlab Research Studio Personal credo: Investigate things to gain knowledge. For more complete Matlab code and simulation customization content, click Intelligent optimization algorithm […]

Research on infrared and visual image fusion method in discrete stationary wavelet transform domain and discrete cosine transform and local spatial frequency with Matlab code

[Vector database] Similar vector retrieval Faiss database installation and cosine similarity calculation (C++)

Directory Introduction installation method InstallOpenBLAS Install lapack Compile Faiss code example Cosine similarity calculation Improved version that outputs ID numbers instead of indexes Introduction Faiss is a powerful vector similarity search library with the following advantages: Efficient search performance: Faiss excels when processing large-scale vector data. It utilizes a highly optimized index structure and approximate […]

Java implementation calculates the similarity of two strings: Jaccard, edit distance, cosine similarity…

Several calculation methods to find out the similarity of strings. There are several commonly used toolkits: Apache Commons Text: This is a toolkit that provides various text operations. There is a class called SimilarityScore, which can be used to calculate the similarity between two strings , supports multiple algorithms, such as Levenshtein Distance, Jaro Winkler […]

How to use neon to optimize the sine and cosine function (sin & cos)

How to use neon to optimize the sine and cosine function (sin & amp; cos) basic idea 1. Approximate solution of cosf(x) and sinf(x) Taylor series expansion Fixed value calculation (actually Taylor series expansion) 2. NEON implementation sinf function cosf function 3. Verification Basic idea If you want to use neon to optimize the cosf() […]