Script Bots and Smart Bots

A chatbot is the most common application of NLP you will actually have used. There are two kinds, and the board hands you a description and asks which one it is.

1What a chatbot is

Chatbot

A computer program designed to simulate human conversation through voice commands, text chats or both. It can learn over time how best to interact with humans, and is used to answer questions, troubleshoot customer problems, qualify prospects and generate sales leads.

2The two kinds

Two kinds of chatbot

The board describes one and asks you to name it, so read these as descriptions rather than definitions.

Script Bot

Works around a script it was programmed with
Easy to make, and needs little or no coding
No or very little language processing skill
Limited functionality — it cannot go beyond its script
Does not learn from the conversation

Examples: The help bot on a shopping website that answers a fixed list of questions.

The words that give it away: learns, experience, databases and coding required all point to a smart bot. Script, predefined and limited point to a script bot.

	Script Bot	Smart Bot
How it works	Around a script it was programmed with	Learns from its environment and experience
Coding	Little or none needed	Coding is required
Data it reaches	Only its own script	Bigger databases and other resources, directly
Functionality	Limited — it cannot go past the script	Wide — it handles what it was never told
Language skill	No or very little language processing	Real language processing
Examples	The help bot on a shopping site	Google Assistant, Alexa, Siri, Cortana

A note on the textbook

The Class X handbook names both types, says “let us understand what each of them means in detail” — and then goes straight to the quiz without giving the comparison. The wording above follows the board papers’ own descriptions, since those are what you will be marked against.

3From the board papers

Which type of chat bot requires coding and works on bigger databases directly?
(A) Script bot (B) Smart bot (C) Traditional bot (D) Rule-based botCBSE board exam 2026

1 mark

▶Show the answer

(B) Smart bot. Both clues point the same way: coding required, and reaching databases beyond its own script. Note that (C) and (D) are just other names for a script bot.

Identify the given chatbot type: “It learns from its environment and experience. It also builds on its capabilities based on the knowledge. These can collaborate with humans, working alongside them and learning from their behaviour.”CBSE sample papers 2023–24 and 2024–25

1 mark

▶Show the answer

Smart bot. Learns, experience and builds on its capabilities are all things a script bot cannot do — a script bot does what it was told once and no more.

A bot that answers a fixed list of frequently asked questions on a clothing website, and replies “Sorry, I can’t help you with that” to anything else, is a ________ bot.Practice — built from the rule-based chatbot in Unit 2

1 mark

▶Show the answer

Script bot. It has a predefined set of questions and answers, cannot go beyond them, and does not learn from the failure. This is the same example the rule-based approach used in Unit 2 — a script bot is a rule based model.

4Check yourself

Quick Check

Which kind of chatbot learns from its environment and experience?

Quick Check

Which kind of chatbot needs little or no coding to build?

Quick Check

Google Assistant, Alexa and Siri are examples of:

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