CAR 2011

University of Illinois

Visualizing Text

Loretta AuvilUIUC

February 25, 2011

CAR 2011

University of Illinois

Overview

CAR 2011

University of Illinois

Architecture Overview

CAR 2011

University of Illinois

Knowledge Discovery Process

CAR 2011

University of Illinois

Knowledge Discovery Infrastructure Benefits

• Provides access to data management tools• Selecting/Loading data from databases, flat files or

repositories• Integrates data mining algorithms • Supports an extensible interface for creating one’s own

algorithms• Provides means for building and applying models• Provides integrated visualizations components• Provides capability to build custom applications• Provides access for local or distributed computation• Provides the ability to share components and applications

CAR 2011

University of Illinois

Meandre Services from Firefox Plugin

Tag Cloud Analysis

Readability Analysis

Automatic Summarization

Network Analysis

Location Entity to Google Map

Date Entity to Simile Timeline

Example: Zotero, SEASR, Protovis, Google Maps,

Simile

CAR 2011

University of Illinois

Mashups & Dashboards

• Html driven dashboard

• 6 services• 4 different tag

cloud views• 2 relationship

views

Example: SEASR, Protovis

CAR 2011

University of Illinois

Locations & Top Words from Tweets• Large Blue circles

are Locations extracted from Tweets

• Orange circles are the Top Words found in these tweets

Example: Twitter, SEASR, Protovis

CAR 2011

University of Illinois

Concept Mapping

Example: SEASR, Flare

CAR 2011

University of Illinois

From Silos to Mashups

• Definition: Mashup is a web page or application that uses and combines data, presentation or functionality from two or more sources to create new services

• Why do we want this?• Enable out services in many applications and on a variety of

devices (laptop, high-res display wall, ipad, iphone or the others)• Share and reuse is a good thing• Reach communities with our tools and their data!!!

• What can we do to change this?• We can think and create data driven solutions so that they can

be mashed up with other tools.• We can build web services that can be deployed or accessed.• We can create API’s to be used.

CAR 2011

University of Illinois

Mashup Framework

Components

Virtualization Infrastructure

Meandre Infrastructure

Visualization

Component Repository

Component Discovery

Meandre Data-Intensive Flows

Apps ServicesPlugin

sWeb Apps

Analytics

Data

Develo

per

Tools

Repositories

DataAnalysis

ComponentsFlows

User Interfaces

Computational Resources

Visualizations

Meandre Workbench

CAR 2011

University of Illinois

Locations

Components

Flows

• Web-based UI• Components and

flows are retrieved from server

• Additional locations of components and flows can be added to server

• Create flow using a graphical drag and drop interface

• Change property values

• Execute the flow

Meandre Workbench

CAR 2011

University of Illinois

Meandre for Mashups

• Major Capabilities • Dataflow execution• Semantic technology (using RDF for storing meta info)• Web-Oriented• Supports publishing services for data, analytics and

visualization• Modular components • Encapsulation and execution mechanism • Promotes reuse, sharing, and collaboration• Cloud-friendly infrastructure• Implements MapReduce for parallelization

• Note: Trading off some performance for reuse, flexibility and modular components… with option to parallelize components to improve performance

CAR 2011

University of Illinois

Components

Analytics

• Unsupervised Learning• Clustering• Frequent Pattern Analysis

(Rule Association)• Supervised Learning

• Naïve Bayesian• Support Vector Machines

(Weka)• Decision Trees (c4.5)

• Optimization Approaches• Genetic Algorithm

• Text Analysis (NLP, Entity Ext)• OpenNLP• Stanford NER

• OpenMary (NLP, Text-Speech)

Visualization

• Geographic (Google Maps)

• Temporal (Simile)

• Network Graphs – Link Nodes and Arcs (Protovis)

• Parallel Coordinates (Protovis)

• Stacked Area Chart (Flare)

• Tag Cloud Maker

• Decision Tree (Applet D2K)

• Naïve Bayes (Applet D2K)

• Rule Association (Applet)

• Dendogram (GWT)

CAR 2011

University of Illinois

Links

• www.seasr.org• www.seasr.org/meandre