Parsing sentences to create a chat bot

Question

I am developing a chat bot with Node.Js. I am trying to find efficient way to parsing sentence.

what do you think about humanity
-> ba bla bla.
what do you think about cats
->I love cats

Right now I am using the intersection technique, but I don't think it's efficient:

var sentence = sentence.split(",")
var inters = intersectionOfArrays(sentence, ["what", "do", "you", "think", "about"])
if(inters.length >= 3) { //we have common words 
 keyword = extractionOfarrays(sentence,["what", "do", "you", "think", "about"]) // get question word (humanity, cats etc)
 if(keyword == "cats") 
 responseToServer("I love cats")
 if(keyword == "humanity") 
 responseToServer("bla bla bla")
}

Is this technique bad? I want to answer thousands of questions so I need to know what is the best method for doing some "AI" magic.

Answer 1

From a personal standpoint, I think this method is fine. You might want to re-work it a little. I'd recommend creating an array with possible intersections, and looping through that array and checking user input against those. For example:

var intersections = [
 ["what", "do", "you", "think", "about"],
 ["what", "is", "your"],
 ...
];

Finally, I'd recommend having something that allows for multiple keywords, rather than one. In addition to this, you may not want to be checking the length of intersections based on a constant, in this case, three.

Anyways, if there's anything else that you want me to cover, just mention it in the comments, and I'll see what I can do.

• Lazy: Hey, thanks for reply. I searched and found AIML, it's more suitable for me. (en.wikipedia.org/wiki/AIML).

Answer 2

A few things to point out:

["what", "do", "you", "think", "about"]

You should move this to an external array.

---

Rather than == matching responses in individual if-else loops: move the responses to a dictionary.

var responseDict = [
 "cats" : "I love cats"
 , "humanity": "bla bla bla"
]

Then, you can use the dictionary to build the response to fit into responseToServer().

responseToServer(responseDict[keyword])