code: public AdamicAdar<K, VV, EV> setMinimumRatio(float ratio) {
  		Preconditions.checkArgument(ratio >= 0, "Minimum ratio must be non-negative");
  
  		this.minimumRatio = ratio;
  
  		return this;
  	}
docs: Filter out Adamic-Adar scores less than the given ratio times the average score.
  
  @param ratio minimum ratio
  @return this