# Semantic Engine - What NAO knows ¶

 Prerequisite : Autonomous Life : ON - Basic Channel : ON

Warning

Semantic Engine is an experimental feature, it is not active by default. To activate it, use _enableSemanticFallback method of ALDialog.

## NAO can learn! ¶

Thanks to his Semantic Engine , NAO is able to:

• keep in mind some information,
• acquire new information, and
• use this knowledge in order to answer your questions and requests.

Note

For now, NAO has a short-term memory, persistent from startup to shut-down. He will forget all his knowledge each time he reboots.

## Test NAO’s ability to learn ¶

When chatting with NAO , try to make some simple assertions, then question him.

Example :



Human: Paul likes to play video games.
Human: what does Paul like?
Robot: Paul likes to play video games.



Tips :

You can also use “I” and “you”.



Human: I like chocolate.
Human: what do I like?
Robot: You like chocolate.





Human: Paul likes to play video games
Human: what does Paul like?
Robot: Paul likes to play video games.
Human: Paul doesn't like to play video games
Human: what does Paul like?
Robot: Paul likes nothing particular.



NAO is able to follow conditional assertions.

Syntax:



if/when/whenever <condition> , <affirmation>



Example :



Human: If Paul likes chocolate, Paul likes banana
Robot: OK, Paul likes the banana if he likes chocolate.
Human: Does Paul like banana
Robot: I don't know if Paul likes the banana.
Human: Paul likes chocolate
Human: Does Paul like banana
Robot: Yes, Paul likes the banana.



## Question NAO about his perceptions ¶

You can question NAO about his perceptions.

Example:

<the human doesn’t touch NAO’s left hand>



Human: is your left hand touched?
Robot: No, my left hand is not touched.



<the human touches NAO’s left hand>



Human: is your left hand touched?
Robot: Yes, you touch my left hand.



## Train NAO ¶

On your request, NAO is able to perform some basic actions.

Example:





<NAO raise his left hand>

For further details, see: Make NAO move .

You can also teach him new actions.

Syntax:



<infinitive command to define> means <set of infinitive(s) command(s) to do>



Example :



Human: to salute means to say hello
Robot: OK, to salute means to say hello.
Human: salute
Robot: Hello



NAO is also able to learn how to react in some circumstances.

Syntax:



if/when <condition> , <command>



Example:



Human: if I am happy, raise your left hand
Robot: OK, I will raise my left hand if you are happy.
Human: I am happy
<robot raises his left hand>
Human: I am happy
<robot doesn't raise his left hand>