No more verbosity, just go directly to the source code. <?php function findChildren($list, $p_id){ $r = array(); foreach ($list as $k => $item) { if ($item[‘fid’] == $p_id) { unset($list[$k]); $length = count($r); $r[$length] = $item; if ($t = findChildren($list, $item[‘id’])) { $r[$length][‘children’] = $t; } } } return $r; } function findChildren2($list,$p_id, & amp;$sike=[]) […]
Tag: hierarchical
word2vec improved hierarchical softmax
Table of Contents summary overall process 1.Construct Huffman tree 2. Combine CBOW and Huffman trees 3. Build word2vec model (CBOW) summary Complete code Summary This blog mainly describes in detail the specific process and code implementation of word2vec using hierarchical softmax (hierarchical softmax). For the basic implementation of word2vec, you can read my previous blog: […]
Excel obtains hierarchical display, folding and expansion, parent-child relationship
Excel obtains hierarchical display, folding and expansion, parent-child relationship apache poi 4.1.2 is provided through the methods Row.getOutlineLevel and Row.getZeroHeight We can iterate through all the rows in the worksheet and have methods that can collect row group information from a row to determine the parent and child of each row. In the following code […]
Python Bayesian MCMC: Metropolis-Hastings, Gibbs Sampling, Hierarchical Models, Convergence Assessment
Full text link: https://tecdat.cn/?p=33961 In a conventional Markov chain model, we are usually interested in finding an equilibrium distribution(Click “Read the original text” at the end of the article to get the completecode data ). Related videos MCMC thinks the other way around – we fix the equilibrium distribution as the posterior distribution: And find […]
C++ hierarchical debugging log printing implementation (use of variable parameter macros)
Implement hierarchical printing of debugging logs LOG_ERROR = 1, LOG_WARN = 2, LOG_INFO = 3, LOG_DEBUG = 4 The printing debugging log level can be dynamically adjusted according to actual needs to facilitate debugging functions. Implementation method: Create a print log class through a singleton, and print the log by calling the print log class […]
WebGL hierarchical model – single node model
Table of Contents A complex model composed of multiple simple models hierarchical model single joint model Hierarchy of models in the JointModel program Sample program (JointMode.js) Detailed code explanation Draw hierarchical models (draw()) program effect A complex model composed of multiple simple models When drawing a complex model composed of multiple small parts, the most […]
Interface query performance optimization – hierarchical classification data query optimization
1. Requirements: Regulations and cases are queried based on the entered keywords and selected categories. If the parent category is selected, the relevant data of all sub-categories must be queried, and the number of related categories must be counted. Only the scores with a category number greater than 0 are displayed, and the data of […]
Data structures and algorithms – hierarchical traversal and front-middle-post-order traversal of binary trees
1 Definition of binary tree Binary tree is as its name implies: a tree structure in which each parent node contains at most two child nodes is called a binary tree. The binary tree program definition can be set up as follows: class TreeNode{ private int data; private TreeNode left; private TreeNode right; } With […]
Clustering problem: Kmeans and hierarchical clustering
Author: Zen and the Art of Computer Programming 1. Introduction : Clustering is an important issue in the fields of data analysis and machine learning. It uses the statistical rules of sets to divide data so that similar objects are classified into the same category and different objects are classified into different categories. In practical […]
GaussDB database SQL series-hierarchical recursive query
Table of contents 1. Foreword 2. GuassDB database hierarchical recursive query concept 3. GaussDB database hierarchical recursive query experimental example 1. Create experiment table 2. sys_connect_by_path(col, separator) 3. connect_by_root(col) 4. WITH RECURSIVE 4. Advantages and Disadvantages of Recursive Query 1. Advantages 2. Disadvantages 5. Summary 1. Preface Hierarchical recursive query is a common SQL query […]