Data ¡GRANDE!

Making sense

How to make sense of it?

• Statistical Analysis
• Machine Learning and Artificial Intelligence
• Visual Analytics (and data analytics)

Data Mining/Machine Learning

Information Visualization

Infovis + Algorithms

Why should we visualize?

Anscombe's quartet

Anscombe's quartet

Anscombe's visualized

Beyond Anscombe's

In Infovis we look for Insights

• Deep understanding
• Meaningful
• Non obvious
• Actionable

How do I do it?

What do I use?

The problem

Better techniques for browsing, navigating and summarizing large repositories of photos

History

Photofinder

PhotoMesa

Picasa

Today

• Flickr
• Google Photos
• Instagram
• Apple Photos

Summarizing

How to show many photos at once

Google Photos

Moma's collection

Photo Treemap

Work with Cati Boulanger, Sanjay Kairam, Frank Bentley, Joseph ‘Jofish’ Kaye, David A. Shamma

[AVI2016_2] [CHI2016] [CHI2016_2]

How to display groups of photos?

What if the photos have also statistics?

What are the best practices for representing photos with associated statistics with treemaps?

Experiment 1:

Photo count

Ex1. Demo

We measured

1. Time to find photo
2. User preference

Ex1. Demographics

154 Mechanical Turk Responses (67 women)

Ex1. Results

Avg time to find depending on photo position

Photo count sweet spot

For a 390x440px phototreemap

Experiment 2:

Layout

Demo

We measured

1. Time to find photos
2. Number of errors
3. Accuracy
4. User preference

Ex2. Demographics

63 responses (27 women)

Time to find photo (ms)

Errors

Accuracy

User preference

81.3% of the participants preferred the scrollable layout

Experiment 3:

User Study

Design

• 7 participants
• Users viewed their own photos
• 5 point likert scale on usefulness and pleasingness for 3x2 configurations
• Labels vs no Labels
• Size and sorting by views, comments or favorites

Configuration preference

Conclusions

• Small number of photos is better but not too small
• Cropping and aspect ration has a big impact
• Scrolling can be preferable to cropping
• Labels are important

Navigation

Allow the user to explore a large photo repository without a defined query

Flickr

Zoomable Photo Treemap

Photo widget to show many photos at once with numeric values and categorical groupings

Flickr's Magic View

PhotoRing

How to better allow exploration and navigation of millions on photos

Browsing

Allow the user to find specific photos on a large photo repository

Other work with photos

Photo Ranking

BTactile

How to better enable people to support blind students in learning graphics