TimeMerger: Disparate Temporal Data Analysis

Sally Divita • Martin Stolen

UM CMSC 734 • Spring 2007

Space Systems Laboratory

Robotic and human systems for space Ranger manipulators MARS experimental space suit

Simulate microgravity Neutral buoyancy tank

Assess individual systems in context

Assess human-robotinteraction

Problem: Large Volumes of Data

Robotic arm telemetry data generated at rate of 125 Hz

Messages generated at potentially hundreds per second

Multiple streams of video generated

Problem: Disparate Data Types

continuous: data obtained at regular intervals

discrete: mark events in time

ephemeral: state values

image: photographs of events

Problem: Visualization Needs

Some data require unique aggregation methods to be useful

Some data require time series analysis tools

Some data require exploration via details on demand

Problem: Different Sources

Data is generated from many different sources

Data is not gathered in one place for analysis

No collaborative tool exists for specialists and researchers to share their knowledge

Solution: Display each data

type in a custom visualization

Aligned on a timeline

Provide a mechanism for time exploration

Details on demand

+

TimeMerger Demo

Implementation

TimeSearcher code base extended

Older TimeSearcher used (v1.3) Written in java (Mac compatible) Had to add scaling capability

Java, piccolo

Scripts for converting data files

User Response 4 sessions with robotics/software expert

Excel and LabVIEW limits current analysis Want to assess context and interactions

Final demo for group of 3 potential users Excited about benefits and possibilities Many ideas for added functionality

Several sources outside of SSL considered it a very valuable and unique tool

THANKS! Stephen “Kiwi”

Roderick for his interest in this project, his time, ideas, and enthusiasm

Harry Hocheiser Ben Bederson Ben Shneiderman