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PLACO: A Multi-Stage Framework for Cost-Effective Performance in Human-AI Teams

Summary

A new arXiv paper introduces PLACO, a multi-stage framework to optimize cost-effective performance in human-AI teams for classification tasks. It combines human and model outputs using Bayes' rule under conditional independence, leveraging calibrated probabilities from both sides to improve decision reliability.

SourcearXiv AIAuthor: Pranavkumar Mallela, Vinay Kumar, Shashi Shekhar Jha, Shweta Jain
PLACO: A Multi-Stage Framework for Cost-Effective Performance in Human-AI Teams
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[2605.08388] PLACO: A Multi-Stage Framework for Cost-Effective Performance in Human-AI Teams

[Submitted on 8 May 2026]

Title:PLACO: A Multi-Stage Framework for Cost-Effective Performance in Human-AI Teams

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Abstract:Human-AI teams play a pivotal role in improving overall system performance when neither the human nor the model can achieve such performance on their own. With the advent of powerful and accessible Generative AI models, several mundane tasks have morphed into Human-AI team tasks. From writing essays to developing advanced algorithms, humans have found that using AI assistance has led to an accelerated work pace like never before. In classification tasks, where the final output is a single hard label, it is crucial to address the combination of human and model output. Prior work elegantly solves this problem using Bayes rule, using the assumption that human and model output are conditionally independent given the ground truth. Specifically, it discusses a combination method to combine a single deterministic labeler (the human) and a probabilistic labeler (the classifier model) using the model's instance-level and the human's class-level calibrated probabilities.

Subjects:

Artificial Intelligence (cs.AI)

Cite as: arXiv:2605.08388 [cs.AI]

(or arXiv:2605.08388v1 [cs.AI] for this version)

https://doi.org/10.48550/arXiv.2605.08388

arXiv-issued DOI via DataCite (pending registration)

Submission history

From: Vinay Kumar [view email] [v1] Fri, 8 May 2026 18:54:46 UTC (7,346 KB)

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Key points and analysis

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Key points

  • PLACO is a multi-stage framework for cost-effective performance in human-AI teams.
  • It combines deterministic human labels with probabilistic model outputs using Bayes' rule.
  • Assumes conditional independence of human and model given ground truth.
  • Uses instance-level and class-level calibrated probabilities for robust classification.

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