Attribute value taxonomies are text files with the following format:

#Attributes <Number of Attributes>

@ <Attribute Name> 
<Attribute Name>,<1st Child>,<2nd-Child>,..., <n-th Child>
<Attribute Name>,<1st Child>,<2nd-Child>,..., <n-th Child>
<Attribute Name>,<1st Child>,<2nd-Child>,..., <n-th Child>
...
*
@ <Attribute Name> 
<Attribute Name>,<1st Child>,<2nd-Child>,..., <n-th Child>
<Attribute Name>,<1st Child>,<2nd-Child>,..., <n-th Child>
<Attribute Name>,<1st Child>,<2nd-Child>,..., <n-th Child>
...
*
...


Example: 
-------

Consider a dataset with two attributes: color and fruit. 
Attribute color can take three values: red, green and blue, and each of these colors can in turn take the sub-values: 
	{dark-red, light-red} for red, 
	{dark-green, light-green} for green and 
	{navy-blue, light-blue} for blue. 

Attribute fruit can take the values: orange, apple and berry. In turn, apple and berry can take the sub-values: 
	{green-apple, red-apple} for apple and
	{blueberry, blackberry, strawberry} for berry.
	
The corresponding taxonomy text file would be:

#Attributes 2
@ color
color, red, green, blue
red, light-red, dark-red
green, light-green, dark-green
blue, navy-blue, light-blue
*
@ fruit
fruit, orange, apple, berry
apple, green-apple, red-apple
berry, blueberry, blackberry, strawberry
*