一.Scikit Learn中使用estimator三部曲 1. 构造estimator 2. 训练模型:fit 3. 利用模型进行预测:predict 二.模型评价 模型训练好后,度量模型拟合效果的常见准则有: 1.      均方误差(mean squared error,MSE): 2.      平均绝对误差(mean absolute error,MAE) 3.      R2 score:scikit learn线性回归模型的缺省评价准则,既考虑了预测值与真值之间的差异,也考虑了问题…

An ingest pattern that we commonly see being adopted at Cloudera customers is Apache Spark Streaming applications which read data from Kafka. Streaming data continuously from Kafka has many benefits such as having the capability to gather insights fa…

Spark is a compelling multi-purpose platform for use cases that span investigative, as well as operational, analytics. Data science is a broad church. I am a data scientist — or so I’ve been told — but what I do is actually quite different from what…

作者:jiangzz 电话:15652034180 微信:jiangzz_wx 微信公众账号:jiangzz_wy 背景介绍 Spark是一个快如闪电的统一分析引擎(计算框架)用于大规模数据集的处理.Spark在做数据的批处理计算,计算性能大约是Hadoop MapReduce的10~100倍,因为Spark使用比较先进的基于DAG 任务调度,可以将一个任务拆分成若干个阶段,然后将这些阶段分批次交给集群计算节点处理. MapReduce VS Spark MapReduce作为第一代大数据处理框…

What’s New, What’s Changed and How to get Started. Are you ready for Apache Spark 2.0? If you are just getting started with Apache Spark, the 2.0 release is the one to start with as the APIs have just gone through a major overhaul to improve ease-of-…

文章标题 What’s new for Spark SQL in Apache Spark 1.3 作者介绍 Michael Armbrust 文章正文 The Apache Spark 1.3 release represents a major milestone for Spark SQL.  In addition to several major features, we are very excited to announce that the project has officia…

文章标题 A Tale of Three Apache Spark APIs: RDDs, DataFrames, and Datasets 且谈Apache Spark的API三剑客:RDD.DataFrame和Dataset When to use them and why 什么时候用他们,为什么? tale [tel] 传说,传言;(尤指充满惊险的)故事;坏话,谣言;〈古〉计算,总计 作者介绍 Jules S. Damji是Databricks在Apache Spark社区的布道者.他也是…

https://mapr.com/blog/real-time-credit-card-fraud-detection-apache-spark-and-event-streaming/ Editor's Note: Have questions about the topics discussed in this post? Search for answers and post questions in the Converge Community. In this post we are…

Learn techniques for tuning your Apache Spark jobs for optimal efficiency. When you write Apache Spark code and page through the public APIs, you come across words like transformation, action, and RDD. Understanding Spark at this level is vital for w…

What is Spark Apache Spark is a cluster computing framework, similar to Apache Hadoop. Wikipedia has a great description of it: Apache Spark is an open source cluster computing framework originally developed in the AMPLab at University of California,…