zhumin726的专栏

Naive Bayes朴素贝叶斯Naive Bayes is an algorithm that can be used to classify objects into usually binary categories. It is one of the most common learning algorithms in spam filters. Despite its s

How to grow a Decision Treesource : [3]LearnUnprunedTree(X,Y)Input: X a matrix of R rows and M columns where Xij = the value of the j'th attribute in the i'th input datapoint. Each column

bin/mahout lucene.vector --dir /home/hadoop/index --output /user/hadoop/out/part-out.vec  --field title --idField id --dictOut /user/hadoop/out/dict.out --maxPercentErrorDocs 0.1 Exception i

1 数据量增大时分布式，多实例共享2 读请求很多使用二级缓存，memcached3写请求增多取消2级节点，改变架构，原始的master/slaves改成cluster的，多个写入节点的解决方案支持或者升级master  16核128gRAM  15krpm硬盘驱动器的增强型服务器减少索引，改变设计4 需求变更，查询复杂，连接操作多数据冗余

1 安装下载，解压配置hbase-env.sh java_home, HBASE_MANAGES_ZK:trueexport JAVA_HOME=/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64export HBASE_MANAGES_ZK=truehbase-site.xml        h

1 编译 mvn clean install -Dmaven.test.skip=true错误[ERROR][ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.[ERROR] Re-run Maven using the -X switch to enable fu