PowerPoint Presentation

Big Data: Simpel of niet?Rutger Mooy9 Februari 2016

nr.For 18 years Marktplaats connects people

19992017

Our heritage

nr.8.2M unique visitors per month and still growing

10M

Listingsper month

6.1M

Marktplaats appactive installs

8.2Mper month

Reach

40%Searched for new products

whereof

Unique reach with buying intent

nr.The Traffic Landscape

nr.

nr.Connecting our users

BUYERSELLERBUYER30M times per year

nr.Selling and Searching

Success depends on active ability of users to articulate their needs"slee" ?

Bob

nr.Can we automate?

nr.Item Recommender StrategiesYou viewed item X. Item Y has a title similar to item X.Recommend item Y.

You viewed items X and Y. Break down X and Y into properties.Recommend items scoring high on these properties.Supply-based

nr.Item Recommender StrategiesCollaborativeYou viewed item X. Others who viewed X, viewed Y.Recommend Y.You searched for S. Others who searched for S, also searched for T.Recommend items matching search T.

nr.Item Recommender StrategiesCategory-basedYou viewed items in category C. Recommend items from C.You viewed items in category C.Others who viewed items in category C, also viewed items in category D. Recommend items from D.You viewed items in category C.Items in category C are similar to items in category D.Recommend items from D.

nr.Item Recommender StrategiesRecent SearchesYou searched for S. Recommend items for search S.Start simple!

nr.Bandit

RECOMMENDATIONS

LOG

USER PROFILESERVICE

INTELLIGENT BLENDER

ABCD

Recommend using 4 strategiesLog interactions (clicks) per strategyAggregateUpdate according to preferences

3

21

90% Exploitation: recommend what user likes10% Exploration: try out different strategiesBe:Personal, Relevant, Fresh, Valuable

nr.User Segmentation

Click rate per categoryMFexample dataSegment users to detect patternsVisualize!

nr.Key Data Building Blocks

Diversification,PersonalizationSkewedness

Feedback Loop

Pattern Detection

Segmentation

Collection

nr.Data Culture

DaSc

PMScienceTechBusinessDEVAnalyst

Data to Information

Information to ValueValue to Action

nr.Relevance

nr.