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create table similarities
as
WITH test_rnd as (
select
  rand(31) as rnd,
  id,
  features
from
  test_hivemall
),

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create table similarities
as
SELECT
  each_top_k(
    10, t2.id, angular_similarity(t2.features, t1.features), 
    t2.id, 
    t1.id,  
    t1.y
  ) as (rank, similarity, base_id, neighbor_id, y)
FROM

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/*
 * Hivemall: Hive scalable Machine Learning Library
 *
 * Copyright (C) 2015 Makoto YUI
 * Copyright (C) 2013-2015 National Institute of Advanced Industrial Science and Technology (AIST)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *

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This article introduce how to find outliers using Local Outlier Detection (LOF) on Hivemall.

Data Preparation

create database lof;
use lof;

create external table hundred_balls (
  rowid int, 

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First of all, make sure that your Treasure Data cluster is HDP2, not CDH4. Matrix Factorization is only supported in the up-to-date HDP2 cluster. HDP2 is allocated for users who signed Treasure Data after Feb 2015. CDH4 is allcoated for the others.

NOTE: please ask our customer support to use HDP2 if you get an error.

Data preparation

Download ml-20m.zip and unzip it.

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HivemallのMatrix Factorization学習のパラメタの説明です。
http://qiita.com/myui/items/dccb4f58799f080e24ab#%E3%83%90%E3%82%A4%E3%82%A2%E3%82%B9%E3%82%92%E8%80%83%E6%85%AE%E3%81%97%E3%81%9F-matrix-factorization

factor, mu, iterations以外は通常指定不要です。指定順序は関係ありません。
etaは場合によっては指定したほうがよいケースもあります。

1) "-factor 10"
The number of latent factor [default: 10]
潜在変数の数

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Hivemall provides a batch learning scheme that builds prediction models on Apache Hadoop. The learning process itself is a batch process; however, an online/real-time prediction can be achieved by carrying a prediction on a transactional relational DBMS.

In this article, we explain how to run a real-time prediction using a relational DBMS. We assume that you have already run the a9a binary classification task.

Online/Offline Matrix of Machine Learning

The following table shows the type matrix of machine learning schemes and applications.

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$ diff build.xml build.xml.orig
41,42c41,42
<       <echo message="Use Hadoop 2.6.0 by default" />
<       <property name="hadoopversion" value="260" />
---
>       <echo message="Use Hadoop 2.x by default" />
>       <property name="hadoopversion" value="200" />
188,201d187
< 

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#cloud-config

hostname: dcXX
fqdn: dcXX.ec2.internal

mounts:
 - [ xvdb, /mnt/disk1, "auto", "defaults,nobootwait,comment=cloudconfig", 0, 2]
 - [ xvdc, /mnt/disk2, "auto", "defaults,nobootwait,comment=cloudconfig", 0, 2]

runcmd:

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#!/bin/bash

# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0