PredictionIO

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PredictionIO:是一个面向开发者和机器学习工程师的开源(Apache v2)机器学习服务器,基于 Apache Spark, Apache HBaseSpray 构建。

目录

指南

安装

  • 快速安装
$ bash -c "$(curl -s https://install.prediction.io/install.sh)"
若用MySQL,需事先创建好表和用户
CREATE DATABASE pio DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
GRANT ALL PRIVILEGES ON pio.* TO pio@localhost IDENTIFIED BY 'pio';

pio表

MySQL [pio]> show tables;
+------------------------------+
| Tables_in_pio                |
+------------------------------+
| pio_meta_accesskeys          |
| pio_meta_apps                |
| pio_meta_channels            |
| pio_meta_engineinstances     |
| pio_meta_enginemanifests     |
| pio_meta_evaluationinstances |
| pio_model_models             |
+------------------------------+

启动pio

pio eventserver &
pio status

学习指南

pio template get PredictionIO/template-scala-parallel-textclassification tc
cd tc
pio app new tcApp
pio import --appid 2 --input data/stopwords.json
pio import --appid 2 --input data/emails.json
pio build --verbose
pio train
pio deploy
https://0.0.0.0:8000/
curl -k -H "Content-Type: application/json" -d '{ "text":"I like speed and fast motorcycles." }' https://localhost:8000/queries.json
{"category":"not spam","confidence":0.8526195109215867}
curl -k -H "Content-Type: application/json" -d '{ "text":"Earn extra cash!" }' https://localhost:8000/queries.json
{"category":"spam","confidence":0.5268770133242983}

注意 engine.json 的一些设置项:

"engineFactory": "com.huihoo.TextClassificationEngine",
"appName": "tcApp"

使用另一个模版

pio template get PredictionIO/template-scala-parallel-universal-recommendation startpio
cd startpio
pio app new pioApp
pio app list
pio import --appid 1 --input data/handmade-event-description.txt

更多细节>>>

模版

问题

https://0.0.0.0:8000 Cannot support TLS_RSA_WITH_AES_256_CBC_SHA with currently installed providers

安装 Java security jars

拷贝 US_export_policy.jar 和 local_policy.jar 到类似目录下:

/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/security

更多常见问题>>>

图集

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