Correct partition calc for doc_rank 2, a=chris

diff --git a/src/library/index_bundle_iterators/WordIterator.php b/src/library/index_bundle_iterators/WordIterator.php
index 96091bdf5..63b74d4c9 100644
--- a/src/library/index_bundle_iterators/WordIterator.php
+++ b/src/library/index_bundle_iterators/WordIterator.php
@@ -482,11 +482,11 @@ class WordIterator extends IndexBundleIterator
                     $number_of_partitions - $num_seen_partitions :
                     $num_seen_partitions - 1;
                 $posting[self::DOC_RANK] = log(
-                    $index_scaling_factor * (
+                    (
                     $remaining_partitions * $this->avg_items_per_partition +
                     $posting[self::SCORE]), 10);
                 if(L\IndexDocumentBundle::isAHostDocId($doc_key)) {
-                    $posting[self::DOC_RANK] += 1;
+                    $posting[self::DOC_RANK] += 2;
                 }
             }
             list($posting['TITLE_LENGTH'], $num_description_scores) =