• The way of algorithm learning, quick sorting of sorting (Java implementation)


    Today, I suddenly want to write a sort. I wrote it before, and then I made mistakes all the time. Then I Baidu it for a while, and I read the method of others’ writing, and I tried to write one myself. Next, I’ll explain the idea of quick sort and the implementation code. Quick […]

  • Performance comparison test of bankmark NoSQL


    Recently, bankmark, a well-known independent benchmark evaluation organization, has conducted performance comparison tests on three NoSQL database products, namely sequoiadb, mongodb and Cassandra. In all the tests, the performance of the three products is different. Bankmark is a German independent benchmarking organization and a well-known NoSQL performance testing team in the industry. Bankmark provides a […]

  • This article explains MySQL benchmark and sysbench tools in detail


    A kind of Author: programming mythAddress: https://www.cnblogs.com/kisme… What is benchmarking The benchmark test of database is a quantitative, reproducible and comparative test of database performance indicators. Benchmark test and stress test benchmark can be understood as a kind of stress test for the system. However, benchmark testing does not care about business logic, which is […]

  • Week 12 of Arts | leetcode 54 rotating printing matrix | go benchmark


    ARTS Arts is an activity launched by Chen Hao in the geek time column. The aim is to keep learning through sharing. Each person writes arts once a week: algorithm is an algorithm problem, review is to read an English article, technique / tips is to share a small technology, share is to share a […]

  • Summary list of deep learning resources [framework, data set, journal]


    Most of the time, people use different deep learning frameworks and standard development toolkits. (SDKs), which are used to implement deep learning methods, are as follows: frame Tensorflow: https://www.tensorflow.org/ Caffe: http://caffe.berkeleyvision.org/ KERAS: https://keras.io/ Theano: http://deeplearning.net/softw… Torch: http://torch.ch/ PyTorch: http://pytorch.org/ Lasagne: https://lasagne.readthedocs.i… DL4J (DeepLearning4J): https://deeplearning4j.org/ Chainer: http://chainer.org/ DIGITS: https://developer.nvidia.com/… CNTK (Microsoft): https://github.com/Microsoft/… MatConvNet: http://www.vlfeat.org/matconv… MINERVA: https://github.com/dmlc/minerva […]

  • Nexmark: how to design a stream computing benchmark?


    How to choose a suitable stream computing engine for your business? Besides comparing their function matrices, benchmark is an important and common method to evaluate system performance. However, in the field of stream computing, there is no industry standard benchmark. This article will discuss the difficulties in the design of stream computing benchmark, share how […]

  • 【Net】 StreamWriter.Write A few points for attention


    background Today, while maintaining an old project, I saw a method tostringConvert tobyte[]Write to the memory stream, and thenToArray()Because it’s usually usedSystem.Text.Encoding.UTF8.GetBytes(string)It happens that there is a security problem here, so I want to refactor it. Since the original developer can’t be found, there is no way to ask why he did it at that […]

  • Brief introduction of golang unit testing


    There is built-in support for unit testing in golang. It is not necessary to introduce a third-party jar like Java to carry out testing. The following will introduce several tests supported by golang; 1、 Test type There are three kinds of unit tests in golang: function test, benchmark test, sample test or sample function;   the […]

  • Clothing recognition analysis based on CNN neural network model based on keras platform


    Link to the original text: http://tecdat.cn/?p=8493 In many introductions of image recognition tasks, the famous MNIST dataset is usually used. However, there are some problems with these data It’s too simple. For example, a simple MLP model can achieve 99% accuracy, while a 2-layer CNN can achieve 99% accuracy. 2. It is overused. Literally, each […]

  • Fast sorting by linked list


    Fast sorting of a linked list in JavaScript class Node { constructor (value) { this.val = value this.next = undefined } } class NodeList { constructor (arr) { let head = new Node(arr.shift()) let next = head arr.forEach(item => { next.next = new Node(item) next = next.next }) return head } } let swap = […]