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ChatBot

A computer program that can interact with a human through a chat interface and is designed to simulate a human. Conversation Agents or Dialog Systems. Example -> SIRI, Google Now -> voice based chatbots.

ELIZA - The first ever chatbot - 1966 - Joseph Weisenbaum at MIT labs.

• It applys pattern matching techniques.
• It was the first chatbot to win the Alan Turing test built in 1950. "The Turing Test of Artificial Intelligence" - The judge has to guess if the random respondent is a computer program or a real human. If the computer program is indistinguishable from the human, it wins!.

ELIZA taught us that "Humans have a desire to communicate with the computer in much the same way as they do with another human."

A.L.I.C.E. -> Artificial Linguistic Internet Computer Entity - 1995

• Inspired by ELIZA, employs pattern matching to process human input.
• Introduced the Artificial Intelligence Markup Language (AIML).

Natural Language Processing

• It drives most chatbots today. It is a subset of Artificial Intelligence today.
• 2006 -> IBM Watson won the show "Jeopardy" -> Quiz Show.
• Closest alternative to chatbots -> Interactive Voice Response Systems (IVRS). Most organizations have a prerecorded voice-based tree of options to their customers. Callers navigate by pressing a number that sends a DTMF(Dual tone multi-frequency) tone that signals the IVRS to perform certain action.

2016 -> Facebook -> Messenger platform - to develop and create Chatbots.

• Google Allo -> Smart AI powered app learns from the messages and provides contextual options. Remainders, weather, etc;
• Microsoft - Tay (Thinking About You) -> stayed less than 24 hours.

Messaging apps have surpassed social networks. People are spending more time in messaging apps than elsewhere.

Bot Channels -> Line , skype, we chat, telegram, etc, powered by AI Providers -> wit.ai, api.ai, motion.ai, chatfuel, IBM Watson.