Wizard of OZ

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Wizard of OZ

• Oxford, Maurice Vereecken

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Goal of implementing Woz

• Wp2
• Quick insight in mapping events to Ontdeknet
• Working towards what to do in WP3
• Finding the possible obstacles on forehand.
• Wp4
• Validating intervention model
• Ad-hoc testing of new ideas

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ImplementationOverview
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Step 1 Gather information
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Step 2 Ozzing
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Step 3 Create model
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Step 4 Implement model
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What is woz

• The Wizard of Oz technique enables unimplemented
  technology to be evaluated by using a human to
  simulate the response of a system. Interacting
  with the knowledge the agent would have.
• Actors
• Wizard (Observer)
• Dorothy (Logged in user)

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What is woz
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Using Woz

• The "wizard" sits in a back room, observes the
  user's actions, and simulates the system's
  responses in real-time. Often users are unaware
  (until after the experiment) that the system was
  not real.
• The "wizard" has to be able to quickly and
  accurately discern the user's input. The output
  must also be sufficiently simple that the
  "wizard" can simulate or create it in real time.
• The easy way
• The user logs in to the system
• The observer receives all the application events
  the system generates
• The observer interpretes the data and gives a
  response based on reasoning (ie a reasoning
  tree)

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Example 1 Introduction

• Outline
• In the introduction fase, the user has to click
  on edit, fill in his personal introduction and
  has to click on save
• The introduction is finished when he has filled
  in more than 5 words.

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Example 1 Introduction

• Events
• When clicking on edit a start task is fired
• When clicking on save and more than 5 words are
  filled in a complete task is fired.
• Parameters
• The context Introduction
• The text The filled in introduction

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Example 1 Introduction

• Fill in your introduction
• The user provides a description/story about
  himself.
• Current problem
• Is the user done introducing himself When is the
  task finished?

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Example 1 Introduction
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Example 1 Introduction
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Example 2 Assignment

• Outline
• The user has to open an assignment
• Make a decision if we want to use an expert which
  he is already signed on or search for a new one.
• Select the expert for the project

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Example 2 Assignment

• Events
• Start_event on opening assignment
• Start_event on selecting expert tab
• Parameters
• The assignment context

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Example 2 Assignment

• Navigation (three modalities)
• Tell the user Give a hint how to get to the
  assignment
• Guide the user tell all the steps the user must
  take (Buttons etc)
• Redirect Directly show the right screen

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Example 2 Assignment

• Select expert for the assignment
• The user can choose one of his own experts or
  (s)he can sign up with a new one.
• Current problem
• Signing up with a new expert can be an optional
  task. How do we manage that?
• The user can work parallel on multiple
  assignments, activities like reading a diary are
  not linked with one single assignment
• The user can click anywhere, the intention is not
  clear.
• If the teacher decides the task isnt finished,
  the completed task has to be reopened

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Example 2 Assignment
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Example 2 Assignment
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Next steps

• Wp2
• Validate events mapping to model
• Creating model on base of lessons learned
• Wp4
• Check working of model
• Fine tune model on base of pilots