Tag：dimension
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Lightweight Network Overview – backbone network
The core of lightweight network is the lightweight transformation of the network from both volume and speed on the premise of maintaining the accuracy as much as possible. This paper briefly describes the lightweight network, mainly involving the following networks: Squeezenet series Shufflenet series MnasNet Mobilenet series CondenseNet Espnet series ChannelNets PeleeNet IGC series Fbnet […]
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[micro service technology topic] Netflix dynamic configuration service – micro service configuration component chameleon archaius
Premise introduction If you want to design and develop a set of micro service infrastructure, parametric configuration is a very important point, and Netflix also open source a configuration center client called chameleon archaius, and archaius can be said to have more production-level features and more flexibility than other clients. In netflixoss microservice technology stack, […]
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Gateway flow controller: realize ingress / nginx flow control combined with AHAS
Introduction: the stability of microservices has always been a topic of great concern to developers. With the evolution of business from single architecture to distributed architecture and the change of deployment mode, the dependency between services has become more and more complex, and the business system is also facing great high availability challenges. Author: graffiti […]
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Deconstructing the drawing logic of tableau (4)
Row and column function areas (drawing logic) Unlike dimensions and measures, the tag bar and row and column functional areas correspond to the logic of tableau chart drawing. In other words, we arrange and combine dimensions and measures through these two functional areas to get the chart we want. First, let’s talk about the function […]
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Flink + hologres 100 million users real-time UV accurate weight removal best practice
Introduction:Flink + hologres 100 million users real-time UV accurate weight removal best practice UV and PV computing are usually divided into two scenarios because of different business requirements: Offline calculation scenario: T + 1 is used to calculate historical data Real time calculation scenario: real-time calculation of daily new data and de duplication of user […]
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Dimension table and fact table
Dimension table Dimension table: generally descriptive information of facts. Each dimension table corresponds to an object or concept in the real world. For example: user, product, date, region, etc. Characteristics of dimension table: The dimension table has a wide range (with multiple attributes and more columns) Compared with the fact table, the number of rows […]
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In the era of information explosion, how to obtain high-quality information?
preface In the era of information explosion, we can’t overemphasize how to obtain information quickly. There are many kinds of information. Some can find the source, some can’t, some can find the law, and some may not. The source and access channel of information are very important. However, in fact, it can be really and […]
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Notes on how to solve practical problems with data (written by Bai Muji)
Summary of knowledge points How to solve practical problems with data Chapter 1 problem solving, you need “process” Problem solving flow chart 1 Objective: to draw a conclusion on “what is the reason and what actions need to be taken” Question: think about “what is the most ideal state”. The gap between the current situation […]
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Bi and Clickhouse: the way of OLAP technology evolution of exploratory Bi
1. Ups and downs of BI system 1.1 death of traditional Bi In order to solve the “chimney” development mode of the traditional early it system in the construction process, and open up the separation of each other“data silos ”, so that users can have a bird’s-eye view of all data from the overall situation […]
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2B system decomposition
The book “effective requirements analysis” focuses on the requirements analysis of organizational application software systems, introducing 18 key tasks combined according to requirements, step-by-step guidance for each task, and the fragment template of “software requirements specification” output by each task. The system to be developed is sometimes quite complex and involves many different businesses. In […]
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Code for construction of data warehouse
This article will comprehensively explain the data warehouse construction specifications, from the data model specifications, to the data warehouse public specifications, the data warehouse layer specifications, and finally to the data warehouse naming specifications, including table naming, index field naming specifications, etc! catalogue： 1、 Data model architecture principles Principle of data warehouse stratification Principle […]
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SVD dimension reduction by singular value decomposition
Dimension reduction unsupervised learning method, singular value decomposition SVD dimension reduction is to reduce an arbitrary n through matrix operation × The matrix A of D is decomposed into the result of multiplication of left singular matrix U, singular value matrix Σ and right singular matrix V, and then the dimension reduction of matrix A […]