title: What is the effect of randomSeed on dimensionality reduction by random projection?
body: <p>1) What is the effect of <code>randomSeed</code> parameter on <code>dimensionality reduction</code> by <code>random projection</code> in <code>weka</code>? </p>
  
  <p>2) Secondly it is said that <code>dimensionality reduction</code> does not loss information, But I have observed that if we set the <code>numberOfAttributes</code> smaller, it improves accuracy, Whereas if we set <code>numberOfAttributes</code> close to current(actual) or a large value, whether it reduces accuracy?</p>