More readme changes

README.md

@@ -21,7 +21,7 @@ http://rubyforge.org/projects/bn4r
 Dependencies
 ------
 
-* rgl-0.2.3 ( Ruby Graph Library ), http://rgl.rubyforge.org
+rgl-0.2.3 ( Ruby Graph Library ), http://rgl.rubyforge.org
 
 Design principles
 ------
@@ -44,69 +44,71 @@ Usage Examples
 ------
 
 1. Install the gem ( bn4r-0.9.0.gem )
-	`gem install bn4r`
+
+    gem install bn4r
 
 2. Include the bn4r
-	`require 'bn4r'`
+
+    require 'bn4r'
 
 3. Create your first bayes net
 
-`#Create BayesNet
-bn_aima = BayesNet.new
+		#Create BayesNet
+		bn_aima = BayesNet.new
 
-# Create nodes for the Bayes Net (BayesNetNodes)
-burglary = BayesNetNode.new("Burglary")
-earthquake = BayesNetNode.new("Earthquake")
-alarm = BayesNetNode.new("Alarm")
-john_calls = BayesNetNode.new("JohnCalls")
-mary_calls = BayesNetNode.new("MaryCalls")
+		# Create nodes for the Bayes Net (BayesNetNodes)
+		burglary = BayesNetNode.new("Burglary")
+		earthquake = BayesNetNode.new("Earthquake")
+		alarm = BayesNetNode.new("Alarm")
+		john_calls = BayesNetNode.new("JohnCalls")
+		mary_calls = BayesNetNode.new("MaryCalls")
 
-# Add nodes ( vertex ) to the BayesNet
-bn_aima.add_vertex(burglary)
-bn_aima.add_vertex(earthquake)
-bn_aima.add_vertex(alarm)
-bn_aima.add_vertex(john_calls)
-bn_aima.add_vertex(mary_calls)
+		# Add nodes ( vertex ) to the BayesNet
+		bn_aima.add_vertex(burglary)
+		bn_aima.add_vertex(earthquake)
+		bn_aima.add_vertex(alarm)
+		bn_aima.add_vertex(john_calls)
+		bn_aima.add_vertex(mary_calls)
 
-# Add relations ( edges ) between nodes in the BayesNet
-bn_aima.add_edge(burglary,alarm)
-bn_aima.add_edge(earthquake,alarm)
-bn_aima.add_edge(alarm,john_calls)
-bn_aima.add_edge(alarm,mary_calls)
+		# Add relations ( edges ) between nodes in the BayesNet
+		bn_aima.add_edge(burglary,alarm)
+		bn_aima.add_edge(earthquake,alarm)
+		bn_aima.add_edge(alarm,john_calls)
+		bn_aima.add_edge(alarm,mary_calls)
 
-# Assign probabilities to each node
-burglary.set_probability_table([], [0.001, 0.999] )
-earthquake.set_probability_table([], [0.002, 0.998] )
+		# Assign probabilities to each node
+		burglary.set_probability_table([], [0.001, 0.999] )
+		earthquake.set_probability_table([], [0.002, 0.998] )
 
-alarm.set_probability_table([burglary,earthquake], [0.95, 0.05, 0.94, 0.06, 0.29, 0.71, 0.001,0.999] )
+		alarm.set_probability_table([burglary,earthquake], [0.95, 0.05, 0.94, 0.06, 0.29, 0.71, 0.001,0.999] )
 
-john_calls.set_probability_table([alarm], [0.90,0.10,0.05,0.95])
-mary_calls.set_probability_table([alarm], [0.70,0.30,0.01,0.99])`
+		john_calls.set_probability_table([alarm], [0.90,0.10,0.05,0.95])
+		mary_calls.set_probability_table([alarm], [0.70,0.30,0.01,0.99])
 
-6. Solve it!
+4. Solve it!
 
-`# John and Mary are calling ...
-john_calls.set_value(true)  
-mary_calls.set_value(true)
+		# John and Mary are calling ...
+		john_calls.set_value(true)  
+		mary_calls.set_value(true)
 
-# Why?
-is_there_a_burglary = bn_aima.enumeration_ask( burglary, [john_calls, mary_calls] )
-puts "Call the police!" if is_there_a_burglary[0] > is_there_a_burglary[1]
+		# Why?
+		is_there_a_burglary = bn_aima.enumeration_ask( burglary, [john_calls, mary_calls] )
+		puts "Call the police!" if is_there_a_burglary[0] > is_there_a_burglary[1]
 
-is_the_alarm_on = bn_aima.enumeration_ask( alarm, [john_calls, mary_calls] )
-puts "Run home, your alarm is distubing the neigborhood!" if is_the_alarm_on[0] > is_the_alarm_on[1]
+		is_the_alarm_on = bn_aima.enumeration_ask( alarm, [john_calls, mary_calls] )
+		puts "Run home, your alarm is distubing the neigborhood!" if is_the_alarm_on[0] > is_the_alarm_on[1]
 
-is_there_a_earthquake = bn_aima.enumeration_ask( earthquake, [john_calls, mary_calls] )
-puts "Calm yourself, there isn't a earthquake ;)" if is_there_a_earthquake[0] < is_there_a_earthquake[1]`	
+		is_there_a_earthquake = bn_aima.enumeration_ask( earthquake, [john_calls, mary_calls] )
+		puts "Calm yourself, there isn't a earthquake ;)" if is_there_a_earthquake[0] < is_there_a_earthquake[1]	
 
-7. See how your bayes net looks like
+5. See how your bayes net looks like
 
-`#In .dot format
-bn_aima.to_dot
+		#In .dot format
+		bn_aima.to_dot
 
-# In Microsoft Belief Networks (.xbn) format
-# (download for free in: http://research.microsoft.com/adapt/MSBNx )
-bn_aima.to_xbn`
+		# In Microsoft Belief Networks (.xbn) format
+		# (download for free in: http://research.microsoft.com/adapt/MSBNx )
+		bn_aima.to_xbn
 
 
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