From: Sarah Hoffmann <lonvia@denofr.de>
Date: Thu, 11 Mar 2021 14:03:36 +0000 (+0100)
Subject: give preference to full words in address, too
X-Git-Tag: v3.7.0~19^2~7
X-Git-Url: https://git.openstreetmap.org/nominatim.git/commitdiff_plain/182f5f5d7b4e3e01fc0ab60a263fa213260bde57?hp=35f4695b67b50a41caf69378ea13044ea91f1d2c

give preference to full words in address, too

Full word terms are already preferred for the name part. Adding
only one-word partials to the address, makes it impossible to
give a similar preference for the address part. Each term adds
a rank penalty. The problem here is that we interpret the query
forwards and backwards. Having different penalty systems for
name and address means that the same term ends up with different
penalties and that often leads to interpretations of the wrong
direction being in the way.
---

diff --git a/lib-php/SearchDescription.php b/lib-php/SearchDescription.php
index ea9d7f58..913a90d2 100644
--- a/lib-php/SearchDescription.php
+++ b/lib-php/SearchDescription.php
@@ -329,51 +329,30 @@ class SearchDescription
 
         if ((!$bStructuredPhrases || $iPhrase > 0)
             && (!empty($this->aName))
-            && strpos($sToken, ' ') === false
         ) {
+            $oSearch = clone $this;
+            $oSearch->iSearchRank++;
+            if (preg_match('#^[0-9 ]+$#', $sToken)) {
+                $oSearch->iSearchRank++;
+            }
             if ($oSearchTerm->iSearchNameCount < CONST_Max_Word_Frequency) {
-                $oSearch = clone $this;
-                $oSearch->iSearchRank += $oSearchTerm->iTermCount + 1;
-                if (empty($this->aName)) {
-                    $oSearch->iSearchRank++;
-                }
-                if (preg_match('#^[0-9]+$#', $sToken)) {
-                    $oSearch->iSearchRank++;
-                }
                 $oSearch->aAddress[$iWordID] = $iWordID;
-                $aNewSearches[] = $oSearch;
             } else {
-                $oSearch = clone $this;
-                $oSearch->iSearchRank += $oSearchTerm->iTermCount + 1;
                 $oSearch->aAddressNonSearch[$iWordID] = $iWordID;
                 if (!empty($aFullTokens)) {
                     $oSearch->iSearchRank++;
                 }
-                $aNewSearches[] = $oSearch;
-
-                // revert to the token version?
-                foreach ($aFullTokens as $oSearchTermToken) {
-                    if (is_a($oSearchTermToken, '\Nominatim\Token\Word')) {
-                        $oSearch = clone $this;
-                        $oSearch->iSearchRank += 3;
-                        $oSearch->aAddress[$oSearchTermToken->iId]
-                            = $oSearchTermToken->iId;
-                        $aNewSearches[] = $oSearch;
-                    }
-                }
             }
+            $aNewSearches[] = $oSearch;
         }
 
         if ((!$this->sPostcode && !$this->aAddress && !$this->aAddressNonSearch)
             && (empty($this->aName) || $this->iNamePhrase == $iPhrase)
         ) {
             $oSearch = clone $this;
-            $oSearch->iSearchRank += 2;
-            if (empty($this->aName)) {
-                $oSearch->iSearchRank += 1;
-            }
-            if (preg_match('#^[0-9]+$#', $sToken)) {
-                $oSearch->iSearchRank += 2;
+            $oSearch->iSearchRank++;
+            if (preg_match('#^[0-9 ]+$#', $sToken)) {
+                $oSearch->iSearchRank++;
             }
             if ($oSearchTerm->iSearchNameCount < CONST_Max_Word_Frequency) {
                 if (empty($this->aName)
@@ -387,6 +366,9 @@ class SearchDescription
                 }
                 $oSearch->aName[$iWordID] = $iWordID;
             } else {
+                if (!empty($aFullTokens)) {
+                    $oSearch->iSearchRank++;
+                }
                 $oSearch->aNameNonSearch[$iWordID] = $iWordID;
             }
             $oSearch->iNamePhrase = $iPhrase;