linear

Tutorial to run linear method

Prepearing Data

Use the script such as rcv1/download.sh and ctr/download.sh to prepare sample data.

Run L1 Logistic Regression on the CTR dataset

Let's first start one worker and one server in the local machine to run the online solver.

../../script/ps.sh start ../../build/linear -app_file ctr/online_l1lr.conf

Next we use 3 workers and 4 servers:

../../script/ps.sh start -nw 3 -ns 4 ../../build/linear -app_file ctr/online_l1lr.conf

We can also start the jobs in multiple machines. Assume there is a your_hostfile containing all machines IPs line by line. Then start the job via the -hostfile option.

../../script/ps.sh start -hostfile your_hostfile -nw 3 -ns 4 ../../build/linear -app_file ctr/online_l1lr.conf

Finally, we can change the application by the -app_file option. For example, Evaluate the trained model

../../script/ps.sh start ../../build/linear -app_file ctr/eval_online.conf

or train by the batch solver

../../script/ps.sh start ../../build/linear -app_file ctr/batch_l1lr.conf

See more information about the configuration file in linear.proto