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Stages of Human-Machine Interactions
There are 4 stages of HMI. This involves the activities of intention, selection, execution and evaluation.
• Intention: This is the first stage of HMI. In this stage the user first sets the goal for interaction.
And then perform actions using a system to reach to the goal. This is a mental stage.
• Selection: This stage is also defined as the selection of action. In this stage order of
actions are set. This means that the user defines how the interaction is going to take place.
• Execution: Once the course of action is set it moves for the execution. In this stage the
action is performed.
• Evaluation: This is very important stage in HMI as the success of the interaction depends
upon the feedback.
We can understand these stages in simple terms through an example of celebration of a
birthday party. Neha has an intent to celebrate her birthday party. She decides to celebrate it
in a hotel. This stage is called intention. She selects a hotel and decides on a few friends and
relatives with whom she would like to share her day. This is the selection stage. Finally, she
picks up her friends and relatives in a car and drives to reach the hotel. She orders her meal.
This is called the execution stage. Could she celebrate her birthday? Were her friends happy?
Did the meal served to them reached their level of expectation,? Asking and answering these
questions are termed as evaluation.
Reboot
Name any 2 stages of HMI.
Different Types of Human-Machine Interaction
We have learnt about the HMI and its stages. Now, lets learn about the different types of
Human-Machine Interaction in this section.
Menu Driven Interface
This interface lets its user to interact using screens or menus. It is also a very common way of
interaction. You switch between menus to reach your goal.
Human-Machine Interaction 9

