NLP
Chatbot
A software application that simulates human conversation, from simple FAQ bots to sophisticated AI assistants.
Definition
A conversational interface powered by NLP that interacts with users through text or voice. Modern chatbots use LLMs for natural conversation; older ones relied on decision trees and intent matching.
Why it matters
The most deployed form of AI in customer-facing applications, but increasingly being replaced by agentic systems that can act, not just talk.
Related terms in NLP
BERT
Google's breakthrough AI model that reads sentences in both directions at once to understand context better.
Chain of Thought (CoT)
Asking an AI to "show its work" and think step-by-step, which makes it much better at solving math and logic problems.
Context Window
The maximum amount of text an AI can read and consider at one time, like how many pages of notes it can hold in its head.
Conversational AI
AI that can have natural back-and-forth conversations with humans, chatbots, voice assistants, and customer service bots.
From vocabulary to outcomes
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