CompareHelper.scala

	def getRecommendedProducts = {
		val featureRatings = productFeatureComparison.getFeatureRatings
		val compared = productFeatureComparison.getProductComparedRatings

		// Loop the products being compared
		compared groupBy { case (pid, comparedRatings: ComparedRatings) =>

			// Run a comparison on all of feature ratings against this compared product.
			val groups = featureRatings groupBy { case (p) =>
				val (key: String, fr: ProductFeatureComparison.FeatureRating) = (p.getKey, p.getValue)
				if (comparedRatings.getRatings.containsKey(key)) {
					val ratingToCompare: Rating = comparedRatings.getRatings()(key)

					// Compare rating and flip the result when orientation is negative
					val c = fr.getRating.compareTo(ratingToCompare) *
						(if (fr.getPriority().getOrientation() == FeaturePriority.Orientation.NEGATIVE)
							-1 else 1)
					c match {
						case -1 => Worse
						case 0 => Similar
						case 1 => Better
						case _ => "None"
					}
				} else {
					"None"
				}
			}

			// Determine counts
			val counts = List(Better, Similar, Worse) map { t =>
				(t, groups.get(t).map(_.size).getOrElse(0)) } toMap
			val total = counts.values.reduce(_+_)

			if (debug) {
				log.debug("compared " + total + " for " + pid)
				log.debug("better count " + counts(Better))
				log.debug("similar count " + counts(Similar))
				log.debug("worse count " + counts(Worse) + "\n")
			}

			// - If 25% are better and less than 10% are Worse it's "Better".
			// - Otherwise it's Similar.
			if (counts(Better) > (total * .25) &&
					counts(Worse) < (total * .1)) {
				Better
			} else {
				Similar
			}
		}
	}