Concept search for e commerce with solr
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![Page 1: Concept search for e commerce with solr](https://reader033.fdocuments.us/reader033/viewer/2022060106/5457de64af7959795d8b5146/html5/thumbnails/1.jpg)
CONCEPT SEARCH FOR ECOMMERCE WITH SOLR
Mikhail KhludnevPrincipal Engineer,eCommerce Search [email protected]
http://goo.gl/2OHk2
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Agenda
● eCommerce Search is Special
● Subphrase Query Parser
● Staged Search
● Match Spotting
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Part I eCommerce Search is Special
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Boolean Retrieval
(+ -)
Vector Space Model
http://upload.wikimedia.org/wikipedia/commons/f/ff/Vector_space_
model.jpg
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Does she search this way?
http://tustinhairsalon.com/wp-content/uploads/2011/02/Blonde_Hair_stylist_stylists_blondes_tustin_santa_ana_orange_county.jpg
+"michael kors" type:handbag
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http://tustinhairsalon.com/wp-content/uploads/2011/02/Blonde_Hair_stylist_stylists_blondes_tustin_santa_ana_orange_county.jpg
michael kors hand bag
That's how she searches!
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Plain Text Documents
Else Jeans Skinny Jeans, Colored Denim Dark Green-WashIn a dark green wash perfect for fall, these Else Jeans skinny jeans hit the colored-denim trend right on the mark! Lyocell cotton rayon polyester Lycra Machine washable Imported Low rise: approx. 8 inches Skinny fit Skinny leg Zipper fly with button closure 5-pocket style Dark green wash, colored denim Waistband with belt loops Inseam: approx. 30-1/2 inches
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
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Plain Text Documents
Else Jeans Skinny Jeans, Colored Denim Dark Green-WashIn a dark green wash perfect for fall, these Else Jeans skinny jeans hit the colored-denim trend right on the mark! Lyocell cotton rayon polyester Lycra Machine washable Imported Low rise: approx. 8 inches Skinny fit Skinny leg Zipper fly with button closure 5-pocket style Dark green wash, colored denim Waistband with belt loops Inseam: approx. 30-1/2 inches
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
approx velit
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BRAND: Calvin KleinGENDER: Women'sTYPE: JeansFIT: At WaistOCCASION: CasualLEG: Classic StraightWEIGHT: Super Skinny COLOR: Light Wash
Product Catalog Document
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Polysemy Problem
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Polysemy Problem
COLOR:"Pink" TYPE:"Sweater"
BRAND: "Tomas Pink" TYPE:"Sweater"BRAND: "Pink Lotus" TYPE:"Sweater"
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http://www.shopstyle.com/browse/sweaters?fts=pink+sweater&fl=b7&fl=b28462&fl=b1830&fl=b15382&fl=b12130&fl=b737
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http://www.shopstyle.com/browse/sweaters?fts=pink+sweater&fl=b7&fl=b28462&fl=b1830&fl=b15382&fl=b12130&fl=b737
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pink jeans by google
https://www.google.com/search?hl=ru&tbm=shop&q=pink+sweater&oq=pink+sweater&gs_l=products-cc.3..0l7j0i5l3.4658.7244.0.7699.12.11.0.1.1.0.298.1153.5j4j1.10.0...0.0...1ac.1.denzbOMlNDg#q=pink+sweater&hl=ru&tbm=shop&ei=oDmIUPXgAoqC4gSylYGACg&start=20&sa=N&num=20&bav=on.2,or.r_gc.r_pw.r_qf.&fp=7898c08770da3440&bpcl=35466521&biw=1280&bih=660
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pink jeans by google
https://www.google.com/search?hl=ru&tbm=shop&q=pink+sweater&oq=pink+sweater&gs_l=products-cc.3..0l7j0i5l3.4658.7244.0.7699.12.11.0.1.1.0.298.1153.5j4j1.10.0...0.0...1ac.1.denzbOMlNDg#q=pink+sweater&hl=ru&tbm=shop&ei=oDmIUPXgAoqC4gSylYGACg&start=20&sa=N&num=20&bav=on.2,or.r_gc.r_pw.r_qf.&fp=7898c08770da3440&bpcl=35466521&biw=1280&bih=660
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right pink jeans
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right pink jeans
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Polysemy Problem No.2
BRAND:"Pink Rose" TYPE:"Sweater"
COLOR:"Pink","Rose" TYPE:"Sweater"
sweater
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pink rose jeans problem
pink rose sweater
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precise pink rose jeans
pink rose sweater
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Ranking Can't Help
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Ranking Can't Help
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Precision is a MUST!
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http://tustinhairsalon.com/wp-content/uploads/2011/02/Blonde_Hair_stylist_stylists_blondes_tustin_santa_ana_orange_county.jpg
Think About the User
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http://www.amazon.com/Silver-Jeans/e/2206256011
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Wrap-Up
● Product Descriptions Differs to Plain Text
● No Query Syntax
● Polysemy Problem
● Ranking Can't Help When Precision is Low
eCommerce Search is Special!
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Part II Subphrase Query Parser
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Don't tokenize at index time
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black and decker toaster oven"black"
"black and"
"black and decker"
... "and"
"and decker"
"and decker toaster"
... "decker"
"decker toaster"
"decker toaster oven"
"toaster oven"
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black and decker toaster oven"black"
"black and"
"black and decker"
... "and"
"and decker"
"and decker toaster"
... "decker"
"decker toaster"
"decker toaster oven"
..."toaster oven"
ID: 123BRAND: "black and
decker"TYPE: "toaster
oven"COLOR: white
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black and decker toaster oven"black"
"black and"
"black and decker"
... "and"
"and decker"
"and decker toaster"
... "decker"
"toaster""decker toaster oven"
... "oven"
ID: 456BRAND: "black and
decker"TYPE: "oven"COLOR: white
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black and decker toaster oven"black"
"black and"
"black and decker"
... "and"
"and decker"
"and decker toaster"
... "decker"
"decker toaster"
"decker toaster oven"
..."toaster oven"
ID: 789BRAND: "decker
toaster"TYPE: "toaster
oven"COLOR: black
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fee people sweater
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Part III Staged Search
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Precision and Recall
Expected
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ExpectedActual
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ExpectedActual
×× OK
True Positive
False Negative
False Positive
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Precision =
ExpectedActual
Actual ∩ Expected
Actual
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ExpectedActual
Recall =Actual ∩ Expected
Expected
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Expected
Actual
100% Recall
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ExpectedActual
Tuning Trade-Off
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ExpectedActual
Tuning Trade-Off
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ExpectedActual
Tuning Trade-Off
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ExpectedActual
Tuning Trade-Off
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defaultOperator
AND OR
numFound=100 numFound=1000
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defaultSearchField / queryFields
BRAND BRAND TYPE STYLE text
numFound=100 numFound=1000
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Stemming & Synonyms
text text_stemmed
numFound=100 numFound=1000
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BRAND:(Silver AND Jeans)
BRAND:(Silver OR Jeans)
BRAND_stem:(Silver OR Jean) OR
text_stem:(Silver OR Jean)
ORDer by DESCending Precision
numFound=100
numFound=1000
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BRAND:(Silver AND Jeans)
BRAND:(Silver OR Jeans)
BRAND_stem:(Silver OR Jean) OR
text_stem:(Silver OR Jean)
numFound>0
numFound>0
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Searching Complexity
O(n log k)
It Depends™
num found
page size
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Stages Ratios
50% 30%
20%
Compounds - Exact Match
Compounds - Omit Words
Text Match
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http://tustinhairsalon.com/wp-content/uploads/2011/02/Blonde_Hair_stylist_stylists_blondes_tustin_santa_ana_orange_county.jpg
Think About The User
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Part IVMatch Spotting
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Facet Counts
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Explain Info15.110098 = (MATCH) sum of: 11.197777 = (MATCH) weight(BRAND:Free People in 28807), product of:
0.81810623 = queryWeight(BRAND:Free People), product of: 9.678479 = idf(docFreq=232, maxDocs=1368899) 0.08452839 = queryNorm
13.687436 = (MATCH) fieldWeight(BRAND:Free People in 28807), product of: 1.4142135 = tf(termFreq(BRAND:Free People)=2) 9.678479 = idf(docFreq=232, maxDocs=1368899) 1.0 = fieldNorm(field=BRAND, doc=28807) 3.912321 = (MATCH) weight(PRODUCT_TYPE:SWEATER in 28807), product of:
0.5750671 = queryWeight(PRODUCT_TYPE:SWEATER), product of: 6.8032427 = idf(docFreq=4130, maxDocs=1368899) 0.08452839 = queryNorm
6.8032427 = (MATCH) fieldWeight(PRODUCT_TYPE:SWEATER in 28807), product of: 1.0 = tf(termFreq(PRODUCT_TYPE:SWEATER)=1) 6.8032427 = idf(docFreq=4130, maxDocs=1368899) 1.0 = fieldNorm(field=PRODUCT_TYPE, doc=28807)
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Match Spotting
ExplainInfo
FacetCounts
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BRAND:"silver jeans" TYPE:"dress" STYLE:"white"
BRAND:"alfani" TYPE:"dress" STYLE:"silver","jeans"
BRAND:"chaloree" TYPE:"dress" STYLE:"silver"
BRAND:"style&co" TYPE:"jeans dress" STYLE:"silver"
BRAND:"silver jeans" TYPE:"dress" STYLE:"black"
BRAND:"silver jeans" TYPE:"dress" STYLE:"white"
BRAND:"silver jeans" TYPE:"jacket" STYLE: "black"
BRAND:"angie" TYPE:"dress" STYLE:"silver","jeans"
BRAND:"chaloree" TYPE:"jeans dress" STYLE:"silver"
BRAND:"silver jeans" TYPE:"dress" STYLE:"blue"
BRAND:"dotty" TYPE:"dress" STYLE:"silver","jeans"
BRAND:"chaloree" STYLE:"jeans" "dress"
![Page 62: Concept search for e commerce with solr](https://reader033.fdocuments.us/reader033/viewer/2022060106/5457de64af7959795d8b5146/html5/thumbnails/62.jpg)
BRAND:"silver jeans" TYPE:"dress" STYLE:"white"
BRAND:"alfani" TYPE:"dress" STYLE:"silver","jeans"
BRAND:"chaloree" TYPE:"dress" STYLE:"silver"
BRAND:"style&co" TYPE:"jeans dress" STYLE:"silver"
BRAND:"silver jeans" TYPE:"dress" STYLE:"black"
BRAND:"silver jeans" TYPE:"dress" STYLE:"white"
BRAND:"silver jeans" TYPE:"jacket" STYLE: "black"
BRAND:"angie" TYPE:"dress" STYLE:"silver","jeans"
BRAND:"chaloree" TYPE:"jeans dress" STYLE:"silver"
BRAND:"silver jeans" TYPE:"dress" STYLE:"blue"
BRAND:"dotty" TYPE:"dress" STYLE:"silver","jeans"
BRAND:"chaloree" STYLE:"jeans" "dress"
silver jeans dress
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BRAND:"silver jeans" TYPE:"dress" STYLE:"white"
BRAND:"alfani" TYPE:"dress" STYLE:"silver","jeans"BRAND:"chaloree" TYPE:"dress" STYLE:"silver"
BRAND:"style&co" TYPE:"jeans dress" STYLE:"silver"BRAND:"silver jeans" TYPE:"dress" STYLE:"black"
BRAND:"silver jeans" TYPE:"dress" STYLE:"white"
BRAND:"silver jeans" TYPE:"jacket" STYLE: "black"
BRAND:"angie" TYPE:"dress" STYLE:"silver","jeans"BRAND:"chaloree" TYPE:"jeans dress" STYLE:"silver"BRAND:"silver jeans" TYPE:"dress" STYLE:"blue"
BRAND:"dotty" TYPE:"dress" STYLE:"silver","jeans"BRAND:"chaloree" STYLE:"jeans" "dress"
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BRAND:"silver jeans" TYPE:"dress" TYPE:"dress" STYLE:"silver","jeans"
TYPE:"jeans dress" STYLE:"silver"BRAND:"silver jeans" TYPE:"dress" BRAND:"silver jeans" TYPE:"dress"
TYPE:"dress" STYLE:"silver","jeans"TYPE:"jeans dress" STYLE:"silver"
BRAND:"silver jeans" TYPE:"dress" TYPE:"dress" STYLE:"silver","jeans"
![Page 65: Concept search for e commerce with solr](https://reader033.fdocuments.us/reader033/viewer/2022060106/5457de64af7959795d8b5146/html5/thumbnails/65.jpg)
BRAND:"silver jeans" TYPE:"dress" TYPE:"dress" STYLE:"silver","jeans"
TYPE:"jeans dress" STYLE:"silver"BRAND:"silver jeans" TYPE:"dress"
BRAND:"silver jeans" TYPE:"dress"
TYPE:"dress" STYLE:"silver","jeans"TYPE:"jeans dress" STYLE:"silver"
BRAND:"silver jeans" TYPE:"dress" TYPE:"dress" STYLE:"silver","jeans"
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BRAND:"silver jeans" TYPE:"dress" (4)TYPE:"dress" STYLE:"silver","jeans"
TYPE:"jeans dress" STYLE:"silver"
TYPE:"dress" STYLE:"silver","jeans"TYPE:"jeans dress" STYLE:"silver"
TYPE:"dress" STYLE:"silver","jeans"
![Page 67: Concept search for e commerce with solr](https://reader033.fdocuments.us/reader033/viewer/2022060106/5457de64af7959795d8b5146/html5/thumbnails/67.jpg)
BRAND:"silver jeans" TYPE:"dress" (4)TYPE:"dress" STYLE:"silver","jeans"
TYPE:"jeans dress" STYLE:"silver"
TYPE:"dress" STYLE:"silver","jeans"
TYPE:"jeans dress" STYLE:"silver"
TYPE:"dress" STYLE:"silver","jeans"
![Page 68: Concept search for e commerce with solr](https://reader033.fdocuments.us/reader033/viewer/2022060106/5457de64af7959795d8b5146/html5/thumbnails/68.jpg)
BRAND:"silver jeans" TYPE:"dress" (4)TYPE:"dress" STYLE:"silver","jeans" (3)
TYPE:"jeans dress" STYLE:"silver"
TYPE:"jeans dress" STYLE:"silver"
![Page 69: Concept search for e commerce with solr](https://reader033.fdocuments.us/reader033/viewer/2022060106/5457de64af7959795d8b5146/html5/thumbnails/69.jpg)
BRAND:"silver jeans" TYPE:"dress" (4)TYPE:"dress" STYLE:"silver","jeans" (3)
TYPE:"jeans dress" STYLE:"silver" (2)
![Page 70: Concept search for e commerce with solr](https://reader033.fdocuments.us/reader033/viewer/2022060106/5457de64af7959795d8b5146/html5/thumbnails/70.jpg)
BRAND: "Silver Jeans" - (156)
COLOR: "Silver" TYPE: "Jeans" - (34)
found 190
![Page 71: Concept search for e commerce with solr](https://reader033.fdocuments.us/reader033/viewer/2022060106/5457de64af7959795d8b5146/html5/thumbnails/71.jpg)
http://www.amazon.com/Silver-Jeans/e/2206256011
![Page 72: Concept search for e commerce with solr](https://reader033.fdocuments.us/reader033/viewer/2022060106/5457de64af7959795d8b5146/html5/thumbnails/72.jpg)
BRAND: "Silver Jeans" - (156)
COLOR: "Silver" TYPE: "Jeans" - (34)
found 190
![Page 73: Concept search for e commerce with solr](https://reader033.fdocuments.us/reader033/viewer/2022060106/5457de64af7959795d8b5146/html5/thumbnails/73.jpg)
Wrap-Up
● eCommerce Search is Special
● Subphrase Query Parser
● Staged Search
● Match Spotting