SlideShare a Scribd company logo
FARROT: 
Filter Amazon Review 
Ratings Over Time 
Andy Lai
Problem 
Amazon doesn't allow f iltering review 
ratings and totals by state or time 
http://youtu.be/w78X0IpjI5c
UI DEMO 
http://youtu.be/w78X0IpjI5c
Data set 
Stanford SNAP Amazon reviews 
35GB 
35M reviews 
University of Illinois Amazon member 
info 
142MB 
Member location information joeme 92 5/26 Cleveland, OH United States Joseph M. Kotow B00006HAXW 
OH
Pipeline 
ImportTsv 
SNAP 
REVIEWS in 
10 rows per 
review 
UIC MEMBER 
LOCATION 
TSV HappyBase
Pipeline 
ImportTsv 
SNAP 
REVIEWS in 
10 rows per 
review 
UIC MEMBER 
LOCATION 
TSV HappyBase
Pipeline 
ImportTsv 
SNAP 
REVIEWS in 
10 rows per 
review 
UIC MEMBER 
LOCATION 
BT0S0V006HAXW Rock Rhythm & Doo Wop Greatest Early Rock unknown A1RSDHE9a-ppyBase 
N6RSZF Joseph M Kotow 9/9 5.0 1042502400 Pittsburgh – Home of the OLDIES I 
have all of the doo wop DVD’s and this one is as good or better than the 1st ones. Rem…
Pipeline 
PIG to CLEAN, 
JOIN and 
AGGREGATE 
rating reviews and 
totals 
ImportTsv 
SNAP 
REVIEWS in 
10 rows per 
review 
UIC MEMBER 
LOCATION 
BT0S0V006HAXW Rock Rhythm & Doo Wop Greatest Early Rock unknown A1RSDHE9a-ppyBase 
N6RSZF Joseph M Kotow 9/9 5.0 1042502400 Pittsburgh – Home of the OLDIES I 
have all of the doo wop DVD’s and this one is as good or better than the 1st ones. Rem…
Pipeline 
ImportTsv 
SNAP 
REVIEWS in 
10 rows per 
review 
UIC MEMBER 
LOCATION 
TSV HappyBase
HBase Schema 
Table Schemas: 
PRODUCTID_STATE, 
TOTAL REVIEWS, AVG RATING 
PRODUCTID_STATE_BYYEAR_EPOCH, 
TOTAL REVIEWS, AVG RATING 
PRODUCTID_STATE_BYMONTH_EPOCH, 
TOTAL REVIEWS, AVG RATING 
PRODUCTID_STATE_BYDAY_EPOCH, 
TOTAL REVIEWS, AVG RATING 
•Example: 
B00003CWT6_CA_BYMONTH_1008115200000
Retrospective 
Design Considerations 
• HBase was used for optimizations for reads, 
range scans, and scalability 
• Data was bucketed by state and different time 
intervals for query performance by avoiding the 
cost of recalculating aggregates at the expense 
of storage 
• Java MR was used to convert multi-row 
reviews to tabular format 
Future 
• Scrape Amazon for new reviews 
• Filter and display reviews
About me – Andy Lai 
 UC Berkeley (B.S. Electrical Engineering 
& Computer Science) 
 SJSU (M.S. Engineering) 
 Software Engineer (DB2, Relational 
database) 
 Interests:

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Farrot insight

  • 1. FARROT: Filter Amazon Review Ratings Over Time Andy Lai
  • 2. Problem Amazon doesn't allow f iltering review ratings and totals by state or time http://youtu.be/w78X0IpjI5c
  • 4. Data set Stanford SNAP Amazon reviews 35GB 35M reviews University of Illinois Amazon member info 142MB Member location information joeme 92 5/26 Cleveland, OH United States Joseph M. Kotow B00006HAXW OH
  • 5. Pipeline ImportTsv SNAP REVIEWS in 10 rows per review UIC MEMBER LOCATION TSV HappyBase
  • 6. Pipeline ImportTsv SNAP REVIEWS in 10 rows per review UIC MEMBER LOCATION TSV HappyBase
  • 7. Pipeline ImportTsv SNAP REVIEWS in 10 rows per review UIC MEMBER LOCATION BT0S0V006HAXW Rock Rhythm & Doo Wop Greatest Early Rock unknown A1RSDHE9a-ppyBase N6RSZF Joseph M Kotow 9/9 5.0 1042502400 Pittsburgh – Home of the OLDIES I have all of the doo wop DVD’s and this one is as good or better than the 1st ones. Rem…
  • 8. Pipeline PIG to CLEAN, JOIN and AGGREGATE rating reviews and totals ImportTsv SNAP REVIEWS in 10 rows per review UIC MEMBER LOCATION BT0S0V006HAXW Rock Rhythm & Doo Wop Greatest Early Rock unknown A1RSDHE9a-ppyBase N6RSZF Joseph M Kotow 9/9 5.0 1042502400 Pittsburgh – Home of the OLDIES I have all of the doo wop DVD’s and this one is as good or better than the 1st ones. Rem…
  • 9. Pipeline ImportTsv SNAP REVIEWS in 10 rows per review UIC MEMBER LOCATION TSV HappyBase
  • 10. HBase Schema Table Schemas: PRODUCTID_STATE, TOTAL REVIEWS, AVG RATING PRODUCTID_STATE_BYYEAR_EPOCH, TOTAL REVIEWS, AVG RATING PRODUCTID_STATE_BYMONTH_EPOCH, TOTAL REVIEWS, AVG RATING PRODUCTID_STATE_BYDAY_EPOCH, TOTAL REVIEWS, AVG RATING •Example: B00003CWT6_CA_BYMONTH_1008115200000
  • 11. Retrospective Design Considerations • HBase was used for optimizations for reads, range scans, and scalability • Data was bucketed by state and different time intervals for query performance by avoiding the cost of recalculating aggregates at the expense of storage • Java MR was used to convert multi-row reviews to tabular format Future • Scrape Amazon for new reviews • Filter and display reviews
  • 12. About me – Andy Lai  UC Berkeley (B.S. Electrical Engineering & Computer Science)  SJSU (M.S. Engineering)  Software Engineer (DB2, Relational database)  Interests: