• Spark open source new feature: catalyst optimizes process tailoring


    Summary:In order to solve the problem of relying too much on hive, sparksql uses a new SQL optimizer to replace the optimizer in hive, which is catalyst. This article is shared from Huawei cloud community《Spark open source new feature: catalyst optimizes process tailoring》, author: hzjturbo. 1. Problem background The figure above shows the layout of […]

  • A review and experimental evaluation


    Title: overview and experimental evaluation of correlation filtering UAV air tracking technology Author: Changhong Fu, Geng Lu Link: correlation filter for UAV based aerial tracking: a review and experimental evaluation code: https://github.com/vision4robotics/DCFTracking4UAV?utm_ source=catalyzex.com Paper PDF please get back to the official account [computer vision alliance] backtracking [object tracking review]. Aerial tracking is one of the […]

  • 360 school recruitment — the final winner (c + +)


    <!–more–> ⭐ Article link: www.mengyingjie.com/archives/39/ ⭐ The final winner Time limit: C / C + + language 1000ms; Other languages 3000msMemory limit: 65536kb for C / C + +; Other languages 589824kb Title Description: The strongest is not necessarily the winner. There are n contestants in a certain competition, but different from other competitions, this […]

  • Go project management 18 quality assurance: quality assurance through testing


    Now the development of a project can not be completed by one person, and it needs many people to cooperate. How to ensure the quality of the code, how the code you write can be used by others, how to optimize the performance of the code, etc. unit testing After a function is developed, the […]

  • Arts Week 12 | leetcode 54 rotary printing matrix | go benchmark


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

  • 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 […]