README.md in libmf-0.2.6 vs README.md in libmf-0.3.0

@@ -9,11 +9,11 @@
 ## Installation
 
 Add this line to your application’s Gemfile:
 
 ```ruby
-gem 'libmf'
+gem "libmf"
 ```
 
 ## Getting Started
 
 Prep your data in the format `row_index, column_index, value`
@@ -52,17 +52,17 @@
 ```
 
 Save the model to a file
 
 ```ruby
-model.save_model("model.txt")
+model.save("model.txt")
 ```
 
 Load the model from a file
 
 ```ruby
-model.load_model("model.txt")
+model = Libmf::Model.load("model.txt")
 ```
 
 Pass a validation set
 
 ```ruby
@@ -97,11 +97,11 @@
   lambda_p1: 0,           # coefficient of L1-norm regularization on P
   lambda_p2: 0.1,         # coefficient of L2-norm regularization on P
   lambda_q1: 0,           # coefficient of L1-norm regularization on Q
   lambda_q2: 0.1,         # coefficient of L2-norm regularization on Q
   learning_rate: 0.1,     # learning rate
-  alpha: 0.1,             # importance of negative entries
+  alpha: 1,               # importance of negative entries
   c: 0.0001,              # desired value of negative entries
   nmf: false,             # perform non-negative MF (NMF)
   quiet: false            # no outputs to stdout
 )
 ```
@@ -124,10 +124,54 @@
 
 - `:one_class_row` - row-oriented pair-wise logarithmic loss
 - `:one_class_col` - column-oriented pair-wise logarithmic loss
 - `:one_class_l2` - squared error (L2-norm)
 
+## Metrics
+
+Calculate RMSE (for real-valued MF)
+
+```ruby
+model.rmse(data)
+```
+
+Calculate MAE (for real-valued MF)
+
+```ruby
+model.mae(data)
+```
+
+Calculate generalized KL-divergence (for non-negative real-valued MF)
+
+```ruby
+model.gkl(data)
+```
+
+Calculate logarithmic loss (for binary MF)
+
+```ruby
+model.logloss(data)
+```
+
+Calculate accuracy (for binary MF)
+
+```ruby
+model.accuracy(data)
+```
+
+Calculate MPR (for one-class MF)
+
+```ruby
+model.mpr(data, transpose)
+```
+
+Calculate AUC (for one-class MF)
+
+```ruby
+model.auc(data, transpose)
+```
+
 ## Performance
 
 For performance, read data directly from files
 
 ```ruby
@@ -170,10 +214,10 @@
 - Suggest or add new features
 
 To get started with development:
 
 ```sh
-git clone --recursive https://github.com/ankane/libmf-ruby.git
+git clone https://github.com/ankane/libmf-ruby.git
 cd libmf-ruby
 bundle install
 bundle exec rake vendor:all
 bundle exec rake test
 ```