osm-search/Nominatim
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Change round how CONST_Max_Word_Frequency is applied. Was causing some valid combinations to be skipped (e.g. Casal De São Tomé). Change structured queries so the first search term can't end up in the address term

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This commit is contained in:
Brian Quinion 2013-01-24 18:00:29 +00:00
parent db2cfd3503
commit 68e4fddbc6
1 changed files with 16 additions and 7 deletions
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23
website/search.php
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@ -286,6 +286,7 @@
// Start with a blank search
$aSearches = array(
array('iSearchRank' => 0, 'iNamePhrase' => -1, 'sCountryCode' => false, 'aName'=>array(), 'aAddress'=>array(),
'aNameNonSearch'=>array(), 'aAddressNonSearch'=>array(),
'sOperator'=>'', 'aFeatureName' => array(), 'sClass'=>'', 'sType'=>'', 'sHouseNumber'=>'', 'fLat'=>'', 'fLon'=>'', 'fRadius'=>'')
);
@ -397,7 +398,7 @@
// Check which tokens we have, get the ID numbers
$sSQL = 'select word_id,word_token, word, class, type, location, country_code, operator, search_name_count';
$sSQL .= ' from word where word_token in ('.join(',',array_map("getDBQuoted",$aTokens)).')';
$sSQL .= ' and search_name_count < '.CONST_Max_Word_Frequency;
// $sSQL .= ' and search_name_count < '.CONST_Max_Word_Frequency;
// $sSQL .= ' group by word_token, word, class, type, location, country_code';
if (CONST_Debug) var_Dump($sSQL);
@ -412,6 +413,7 @@
failInternalError("Could not get word tokens.", $sSQL, $aDatabaseWords);
}
$aPossibleMainWordIDs = array();
$aWordFrequencyScores = array();
foreach($aDatabaseWords as $aToken)
{
if (isset($aValidTokens[$aToken['word_token']]))
@ -422,7 +424,8 @@
{
$aValidTokens[$aToken['word_token']] = array($aToken);
}
if ($aToken['word_token'][0]==' ' && !$aToken['class'] && !$aToken['country_code']) $aPossibleMainWordIDs[$aToken['word_id']] = 1 + $aToken['search_name_count'];
if ($aToken['word_token'][0]==' ' && !$aToken['class'] && !$aToken['country_code']) $aPossibleMainWordIDs[$aToken['word_id']] = 1;
$aWordFrequencyScores[$aToken['word_id']] = $aToken['search_name_count'] + 1;
}
if (CONST_Debug) var_Dump($aPhrases, $aValidTokens);
@ -598,7 +601,7 @@
{
if (sizeof($aSearch['aName']))
{
if (($sPhraseType != 'street' && $sPhraseType != 'country') && (!isset($aValidTokens[$sToken]) || strlen($sToken) < 4 || strpos($sToken, ' ') !== false))
if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strlen($sToken) < 4 || strpos($sToken, ' ') !== false))
{
$aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
}
@ -623,11 +626,14 @@
{
if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
{
if (($sPhraseType != 'street') && sizeof($aCurrentSearch['aName']) && strlen($sToken) >= 4)
if ((!$bStructuredPhrases || $iPhrase > 0) && sizeof($aCurrentSearch['aName']) && strlen($sToken) >= 4)
{
$aSearch = $aCurrentSearch;
$aSearch['iSearchRank'] += 1;
$aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
$aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
else
$aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
if ($aSearch['iSearchRank'] < $iMaxRank) $aNewWordsetSearches[] = $aSearch;
}
@ -636,7 +642,10 @@
$aSearch = $aCurrentSearch;
$aSearch['iSearchRank'] += 2;
if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
$aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
$aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
else
$aSearch['aNameNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
$aSearch['iNamePhrase'] = $iPhrase;
if ($aSearch['iSearchRank'] < $iMaxRank) $aNewWordsetSearches[] = $aSearch;
}
@ -889,7 +898,7 @@
// For infrequent name terms disable index usage for address
if (CONST_Search_NameOnlySearchFrequencyThreshold &&
sizeof($aSearch['aName']) == 1 &&
$aPossibleMainWordIDs[$aSearch['aName'][reset($aSearch['aName'])]] < CONST_Search_NameOnlySearchFrequencyThreshold)
$aWordFrequencyScores[$aSearch['aName'][reset($aSearch['aName'])]] < CONST_Search_NameOnlySearchFrequencyThreshold)
{
$aTerms[] = "array_cat(nameaddress_vector,ARRAY[]::integer[]) @> ARRAY[".join($aSearch['aAddress'],",")."]";
}