SIGIR’13 Debrief28th July - 1st August

Trinity College Dublin (TCD), Dublin, Ireland

WING Monthly Meeting (Nov 2013)Jovian Lin

Full Paper Acceptance(20%)

Total Accepted0

50100150200250300350400 366

73Num

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U.S.A. China Netherlands Singapore U.K.0

5

10

15

20

25

30 28

9

5 5 5

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Top 5 Countries (according to author affiliation)

Top 5 Technical Areas(based on primary keyword assigned by accepted papers)

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1216 16 15 15

11 11

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Short Paper Acceptance(34%)

Total Accepted0

50

100

150

200

250

300255

85

Tota

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Demonstrations Acceptance(50%)

Total Accepted05

101520253035404550

46

23

Num

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f dem

os

Additional Stats

• 7 workshops• 10 tutorials• Doctoral Consortium hosted 11 students

(from 10 countries and 11 institutions)

PHOTOS

Trinity College Dublin (TCD)

• Founded in 1592.

• One of the oldest universities in Europe.

• 35 acre campus located in the heart (<3) of Dublin city.

Select an interesting paper in SIGIR’13

• “Opportunity model for e-commerce recommendation: right product; right time”

• By Jian Wang & Yi Zhang (UC Santa Cruz)

“Opportunity model for e-commerce recommendation: right product; right time” – Jian

Wang & Zhang Yi

• Most of existing e-commerce recommender systems aim to recommend the right product to a user;

• based on whether the user is likely to purchase or like a product.

• But the authors say:• “the effectiveness of recommendations also depends

on the time of the recommendation.”

• Example:• User purchases e a replacement battery after 2

years;• and purchases a new laptop in another 2 years.• Thus it’s not a good idea to recommend a new laptop

or a replacement battery right after the user purchased the new laptop.

“Opportunity model for e-commerce recommendation: right product; right time” – Jian

Wang & Zhang Yi

• What their work does:• Model that estimates the joint probability of a user

making a follow-up purchase of a particular product at a particular time.

• i.e., calculate the probability of a user buying item i at time x

• Why I chose this work:• They analyze the recommendation process at a

deeper level – a quality that I focus on as well.

“Opportunity model for e-commerce recommendation: right product; right time” – Jian

Wang & Zhang Yi

THANK YOU