Solving the "Brooklyn Problem"

Solving The Brooklyn Problem: Better UX through cheap hacks Kellan Elliott-McCrea, Etsy @kellanThursday, April 21, 2011

Thursday, April 21, 2011

1. UI/UX can be improved by applying ambient location informationThursday, April 21, 2011

1. UI/UX can be improved by applying ambient location information 2. It’s easy.Thursday, April 21, 2011

The Brooklyn ProblemThursday, April 21, 2011

The Brooklyn Problem Brooklyn, New York Brooklyn, AlabamaThursday, April 21, 2011

if ($query == ‘Brooklyn’) { return ‘Brooklyn, NY’; }Thursday, April 21, 2011

Solr 3.10, Maxmind world populations dataset, bash, and an “algorithm”Thursday, April 21, 2011

Solr geo-spatial extension 3.10+ schema.xml: <fieldType name="location" class="solr.LatLonType" subFieldSuffix="_coordinate"/> .... <field name="latlong" type="location" indexed="true" stored="true" required="true" />Thursday, April 21, 2011

ALL THE CODE! <?php $fh = fopen(worldcitiespop.txt, r); $row = fgetcsv($fh); // discard headers for($i=0;$i<100;$i++) { $row = fgetcsv($fh); $json = array(add=> array(doc => array( terms => $row[2] . . $row[0], // city country population => $row[4], latlong => $row[5] . , . $row[6], // "latitude,longitude" gets parsed ))); curl_post(json_encode($json)); } } function curl_post($json, $url=http://localhost:8983/solr/update/json) { $ch = curl_init(); curl_setopt($ch, CURLOPT_HTTPHEADERS, array(Content-Type: application/json)); curl_setopt($ch, CURLOPT_URL, $URL); } ?>Thursday, April 21, 2011

“a custom Solr scoring function to re-rank results based on social geo-relevance”Thursday, April 21, 2011

div(geodist(),sqrt(sum(population,1))Thursday, April 21, 2011

http://localhost:8393/solr/ placesuggest/select? q=b*&sfield=latlong&pt=37.7749295 ,-122.4194155&sort=div(geodist (),sqrt(sum(population,1)))%20ascThursday, April 21, 2011

OM G CO NT http://localhost:8393/solr/ EX TS placesuggest/select? GE EN q=b*&sfield=latlong&pt=37.7749295 OC SIT O D IV ,-122.4194155&sort=div(geodist IN E PE (),sqrt(sum(population,1)))%20asc G! RS !!!! ON AL IZ EDThursday, April 21, 2011

Done!Thursday, April 21, 2011

the tear down * Solr 3.10+ working geo-spatial extensions * 2.6 million points == 380Mb index * the data sucks, and it doesn’t matter (much) * a few days of work, 85% increase in data quality.Thursday, April 21, 2011

.Wanjialing, ChinaThursday, April 21, 2011

Brooklyn NY, population: 0Thursday, April 21, 2011

So why aren’t people doing this?Thursday, April 21, 2011

Solr 3.10, Maxmind world populations dataset, bash, and an “algorithm”Thursday, April 21, 2011

Thank you! http://www.etsy.com/listing/59401151/vintage-coffee-bean-bag-chairs http://www.ﬂickr.com/photos/darn/141009324/ http://www.ﬂickr.com/photos/21953562@N07/5539813593/ http://www.maxmind.com/app/worldcities http://www.lucidimagination.com/blog/2010/07/20/update-spatial-search-in- apache-lucene-and-solr/ http://www.etsy.com/listing/66013923/triceratops-forged-copper-maskThursday, April 21, 2011

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Solving the "Brooklyn Problem"

by Kellan on Apr 21, 2011

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