Information-Seeking Dialogue

A Walton-Krabbe dialogue type whose shared goal is the transfer of information from an informed party to an uninformed party. Asymmetric in starting epistemic state — one participant has knowledge the other lacks. The bulk of LLM-chat use cases instantiate this type; many of the failure modes of LLM agents arise when an information-seeking dialogue shifts (without the user’s awareness) into a persuasion or eristic dialogue.

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Retrieval-based Dialogue

A dialogue approach in which the system selects responses from a large repository of human-written utterances using relevance ranking, rather than generating them token by token. Used in XiaoIce’s core chat alongside generative components.

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From Eliza to XiaoIce - Social Chatbots

Dialogue Typology

Walton & Krabbe’s (1995) classification of argumentative dialogue into six basic types: persuasion (resolve a conflict of opinion), negotiation (resolve a conflict of interest), deliberation (decide on a course of action), inquiry (prove a hypothesis), information-seeking (transfer of information from informed to uninformed), eristic (vent emotion). Each is characterised by initial situation × individual goals × shared goal. Real argumentation often shifts between types — licit shifts broaden the dialogue, illicit ones constitute fallacies.

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Commitment in Dialogue

Commitment in Dialogue: Basic Concepts of Interpersonal Reasoning

Reference: Walton, D. N. & Krabbe, E. C. W. (1995). Commitment in Dialogue: Basic Concepts of Interpersonal Reasoning. SUNY Series in Logic and Language. State University of New York Press, Albany. Internet Archive borrow (book; institutional access via SUNY.)

Summary

Walton and Krabbe synthesise two decades of work on formal dialectic (Hamblin 1970 onward) and informal logic into a typology of dialogue and a corresponding theory of how participants’ commitments evolve as a dialogue proceeds. Their central observation is that argumentation in natural settings is not a single uniform activity but a structured family of dialogue types, each characterised by its initial situation, the individual goals of the participants, and the shared goal of the dialogue. The six basic types they identify — persuasion, negotiation, deliberation, inquiry, information-seeking, eristic — are mutually distinguished by these three dimensions and by their characteristic legitimate moves. Across all types, every utterance updates each participant’s commitment store: the public set of propositions to which they have committed, are committed by inference, and may be challenged on. The book gives semi-formal rules for each dialogue type, analyses dialogue shifts (moves that licitly or illicitly transition between dialogue types — e.g. a persuasion shifting to a negotiation), and uses the framework to give principled accounts of fallacies as illegitimate dialogue moves rather than logical errors. Its influence on multi-agent systems is enormous: every commitment-based ACL semantics (Singh, Fornara & Colombetti) inherits the Hamblin/Walton commitment-store concept; protocol-design work (e.g. ACRE, An Interaction-oriented Agent Framework for Open Environments) uses dialogue-type analysis to specify legitimate conversation policies.

Key Ideas

Six basic dialogue types: persuasion (resolve a conflict of opinion), negotiation (resolve a conflict of interest), deliberation (decide on a course of action), inquiry (establish proof of a hypothesis from agreed premises), information-seeking (transfer of information from informed to uninformed), eristic (vent emotion / display superiority). Each is characterised by initial situation × individual goals × shared goal.
Commitment store as the engine of dialogue: every participant has a public set of commitments updated by their moves; speech acts add, retract, or qualify entries. The store is open to challenge by other participants under the dialogue’s rules.
Dialectical / propositional commitments: Walton & Krabbe distinguish explicit commitments (asserted propositions) from inferred commitments (entailed by, or presupposed by, what was said) — a distinction crucial for capturing implicit communication.
Dialogue shifts: most real argumentation moves between dialogue types. Some shifts are licit (a persuasion may legitimately broaden into a deliberation); others are illicit (an information-seeking dialogue exploited as a covert persuasion is a fallacy of digression).
Fallacies as dialogue-rule violations: rather than treating fallacies as defects of single arguments (the syllogistic tradition), they are analysed as moves that violate the rules of the dialogue type they occur in — a circular argument is fine in inquiry but fallacious in persuasion.
Profiles of dialogue: a sequence diagram of typical turns within a dialogue type — the precursor of Conversation Policy / interaction-protocol diagrams in the ACL literature.

Connections

Conceptual Contribution

Claim: Argumentation is not a single uniform activity but a structured family of dialogue types characterised by the participants’ goals; within each type, every utterance updates each participant’s public commitment store under type-specific rules; fallacies are best analysed as illegitimate dialogue moves rather than as defective arguments.
Mechanism: Six basic dialogue types defined by initial situation × individual goals × shared goal; dialogue rules per type; commitment-store update semantics; analysis of dialogue shifts and mixed dialogues; classification of fallacies as type-specific rule violations.
Concepts introduced/used: Dialogue Typology, Commitment Store, Persuasion Dialogue, Deliberation Dialogue, Inquiry Dialogue, Information-Seeking Dialogue, Eristic Dialogue, Negotiation, Dialogue Shift, Profile of Dialogue.
Stance: synthesis monograph / theoretical framework.
Relates to: Provides the upstream typology that the commitment-based ACL programme (Singh, Fornara & Colombetti, Commitment Machines - Yolum and Singh) takes as given when it makes commitments first-class. The Hamblin commitment-store mechanism (Fallacies - Hamblin) is the operational heart; Walton & Krabbe extend it with the dialogue-type framing. Conceptually adjacent to Grice’s cooperative principle but more granular: where Grice supplies a single cooperative norm, Walton & Krabbe show that the relevant cooperation is type-specific (persuasion ≠ negotiation ≠ inquiry). Coordinating Agents Using ACL Conversations (Cost et al.) and ACRE Agent Conversation Reasoning Engine are direct engineering descendants — Coloured Petri Nets and Dooley graphs are formal specifications of the kinds of dialogue Walton & Krabbe describe semi-formally. In the LLM-agent era the dialogue-type taxonomy is the obvious diagnostic for MAST-style failures (e.g. multi-agent systems unwittingly conducting eristic dialogues at scale, or persuasion-shifts hijacking deliberations) and a natural specification language for conversation-policy enforcement.