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Chapter 1 Introduction to Scala 1.1 general Scala is a static type programming language that takes Java virtual machine (JVM) as the running environment and combines the best features of object-oriented and functional programming (static languages need to be compiled in advance, such as Java, c, c + +, dynamic languages such as js). 1) Scala ...

catalogue Overview and use of generics Why are there generics? Generic statement definition format Benefits of generics Generic application Generic class generic method generic interface ​Generic advanced (wildcard) Overview and use of enhanced for Enhanced for Overview Enhanced for recycling Overview and use of static impo ...

IK word splitter is a word splitter about Chinese. If there is IK word splitter, naturally there are other word splitters. For example, pinyin word splitter is for pinyin word segmentation, and letter word segmentation is for letter word segmentation. A good way for ES is to expand these functions in the form of plug-ins. Download and installa ...

Unit 5: grating pretreatment 1 Introduction In this module, we will discuss the following concepts: Understand the types of data correction commonly used in remote sensing images.How to intuitively compare the spatial data of different preprocessing levels in the same dataset.How to perform cloud masking and cloud masking assessm ...

For learning to be just and constant, for learning to be not just Sui Dynasty, and for learning to be constant, to retreat. Song. Feng Zixian Preface There are three masking-related functions in GEE, mask, updateMask and unmask. It is necessary to distinguish and master the usage of three masking functions. 1. mask() function e ...

SogouQ log analysis Data research and business analysis Sogou lab is used to provide [user query log (SogouQ)] data, and Spark framework is used to encapsulate the data into RDD for business data processing and analysis. 1) . data introduction: The search engine query log database is designed as a collection of Web query log data in ...

01 introduction Through the previous blog posts, we know the concept and principle of DataX: DataX tutorial (01) - getting startedDataX tutorial (02) - complete process of running dataX in IDEA (filling all pits)DataX tutorial (03) - source code interpretation (super detailed version) This article needs to explain the configuration of Da ...

Data preparation The data used below are all the following data sensor_1,1547718199,35.8 sensor_6,1547718201,15.4 sensor_7,1547718202,6.7 sensor_10,1547718205,38.1 sensor_1,1547728199,25.8 sensor_6,1547712201,35.4 sensor_7,1547718102,16.7 sensor_10,1547712205,28.1 Basic conversion operators (Map, FlatMap, Filter) Map map is to tran ...

1. Load external profile 1.1 Input config filebeat.config.inputs: enabled: true path: inputs.d/*.yml inputs. Example of configuration file in D Directory: - type: log paths: - /var/log/mysql.log scan_frequency: 10s - type: log paths: - /var/log/apache.log scan_frequency: 5s 1.2 Module config filebeat.config.modu ...

This paper first writes the demo of the multi classification problem supported by xgboost, prints the tree structure, and then understands the principle of xgboost to realize the multi classification problem. This order is easier to understand. xgboost multi classification problem demo This demo can be seen from the source code of xgboost. In ...