Statement objects to hold information
about things that can be said. An important part of how a chat bot
selects a response is based on its ability to compare two statements
to each other. There are a number of ways to do this, and ChatterBot
comes with a handful of methods built in for you to use.
Use your own comparison function¶
You can create your own comparison function and use it as long as the function takes two statements as parameters and returns a numeric value between 0 and 1. A 0 should represent the lowest possible similarity and a 1 should represent the highest possible similarity.
def comparison_function(statement, other_statement): # Your comparison logic # Return your calculated value here return 0.0
Setting the comparison method¶
To set the statement comparison method for your chat bot, you
will need to pass the
to your chat bot when you initialize it. An example of this
is shown below.
from chatterbot import ChatBot from chatterbot.comparisons import LevenshteinDistance chatbot = ChatBot( # ... statement_comparison_function=LevenshteinDistance )