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1. Overview Before that, I introduced how to build a recommendation system. Today, I will introduce how to build a practical recommendation based on the collaborative filtering of users. 2. Content Collaborative filtering technology is widely used in recommendation system, which is a rapidly developing research field. Two common methods are ...

1, Elliptic curve cryptography Elliptic curve: it is a kind of bivariate polynomial equation whose solution forms an elliptic curve. Elliptic curve parameter: defines a unique elliptic curve. Two parameters g (base point) and n (order) are introduced. G point (xG, yG) is the base point on the elliptic c ...

Kafka Quick Start (11) - RdKafka Source Analysis 1. RdKafka C Source Code Analysis 1. Kafka OP Queue RdKafka encapsulates Kafka Broke's interactions and internally implemented operations into an Operator structure and then puts them into the OP processing queue for unified processing.The Kafka OP queue is the pipeline for inter-thread communic ...

​ Data Access Access to data can be accessed by writing data to Kafka in real time, either directly or through real-time access methods such as oracle's ogg or mysql's binlog ogg Golden Gate (OGG) provides real-time capture, transformation and delivery of transaction data in heterogeneous environments. Through OGG, data from oracle can be writ ...

1. Linux 6 + emcc12.1.0.5 installation environment introduction l this set of environment is based on rhel6.10 + Oracle 11.2.0.4 single node database L java development kit (JDK)1.6.0.43.0 L Oracle WebLogic Server 11g version 1 (10.3.6) Orac l e Management Office 12c 5th Edition (12.1.0.5) 1.1 check users, groups $ more /etc/oraInst.loc inve ...

Tags (space separated): building big data platform 1: Environment initialization 2: Installation of CDH6.3.2 1: Environment initialization 1.1 environment introduction System: CentOS7.5X64 cat /etc/hosts ---- 192.168.11.160 dev01.lanxintec.cn 192.168.11.161 dev02.lanxintec.cn 192.168.11.162 dev03.lanxintec.cn ---- 1.2: Keyless l ...

Oracle RAC 12.2.0.1 Patch 30920127(Apr 2020) Environment introduction: Oracle RAC version: 12.2.0.1 (two nodes) Operating system version: CentOS 7.4 64bit 1, Patch environment preparation 1.1 upload installation package p6880880_122010_Linux-x86-64 p30920127_122010_Linux-x86-64 1.2 ensure the ipatch utility version Patch 30920127 requires ...

Producer sends demos asynchronously stay Above The use of the AdminClient API was introduced, and now we know how to manage Kafka through the API in our applications.But in most application development, the most common scenario we face is to send messages to or consume messages from Kafka, which is a typical production/consumption model.This a ...

*Author's introduction*****Original Creator: Lose SeriouslyContact number: 18081072613WeChat, QQ:18081072613Reprint to indicate origin 1. Failure PhenomenaToday, a customer's database started with an ORA-00600 [kkdlcob-objn-exists], [37] error, the database could not be opened, along with a good ORA-00704, requesting emergency rescue.Error st ...

Five Kinds of Kafka Client Role and Difference stay Above It describes how to set up a Kafka service, so how do we access and integrate Kafka in development?This requires the use of the Kafka client API described in this article.The following is a diagram in the official document that illustrates the type of client that can be integrated with ...