Eliza

Weizenbaum’s 1966 pattern-matching chatbot simulating a Rogerian psychotherapist using keyword-driven reflection templates. The prototype case for surface-only conversational agents and the origin of the “Eliza effect” — human overattribution of understanding to simple systems.

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Social Chatbots

Conversational systems optimised for long-term emotional engagement rather than single-turn task completion, characterised by the integration of IQ (knowledge, reasoning) with EQ (empathy, persona, social skill) and evaluated by sustained-engagement metrics like Conversation-turns Per Session (CPS). Exemplified by Microsoft XiaoIce.

Summary

Survey of conversational AI that traces the arc from Eliza (1966) and Parry through ALICE, DARPA Communicator, and modern IPAs (Siri, Cortana, Alexa) to Microsoft’s social chatbot XiaoIce. The authors distinguish task-completion from chitchat systems, and argue that the next frontier — social chatbots — must integrate IQ (knowledge/reasoning/skills) with EQ (empathy, social skills, personality) to build long-term emotional connections with users.

They introduce conversation-turns per session (CPS) as a success metric for social chatbots and describe XiaoIce’s architecture (chat manager, core chat with retrieval+generation, visual awareness, skills) along with design principles around ethical response filtering and persona consistency.

Key Ideas

IQ + EQ integration as design principle for social chatbots

CPS (conversation-turns per session) as success metric

Core-chat pipeline: user understanding -> response generation with topic guidance

Image commenting as social (not just descriptive) task

Taxonomy: chitchat vs task-completion vs IPA vs social chatbot

Conceptual Contribution

Claim: Social chatbots must be designed around both intellectual quotient (IQ) and emotional quotient (EQ); their success metric is not task completion or Turing-test pass-rate but Conversation-turns Per Session (CPS), reflecting sustained emotional engagement.

Mechanism: Survey-style design brief: trace Eliza → Parry → Alice → DARPA Communicator → Siri → XiaoIce; propose an architecture with chat manager, core-chat (user understanding + response generation + personality + ethical filter), visual awareness, and skills; integrate empathy, consistent persona, topic guidance, and emotion tracking; use XiaoIce (100M+ users) as illustrative case.

Concepts introduced/used: Social Chatbots, Conversation-turns Per Session (CPS), Emotional Quotient, Core Chat Architecture, Empathetic Response Generation, XiaoIce, Conversational AI, Eliza, Turing Test, Retrieval-based Dialogue

Stance: engineering / design-principles

Relates to: Stands at the opposite pole from task-oriented ACLs (KQML as an Agent Communication Language, FIPA-ACL) — here the communicative goal is emotional belonging rather than knowledge exchange. Contrasts with Agents Framework - Zhou et al (task agents with SOPs) and Multi-Agent Collaboration in AI - Wasif Tunkel (productive collaboration). Anticipates the human-emotional concerns that re-emerge in Ensuring Trustworthy and Ethical Behaviour in Intelligent Logical Agents.

Eliza

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