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Efficiency of Proportional Mechanisms in Online Auto-Bidding Advertising

Nguyen Kim Thang · Apr 14, 2026 · Citations: 0

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How to use this page

Low trust

Use this as background context only. Do not make protocol decisions from this page alone.

Best use

Background context only

What to verify

Read the full paper before copying any benchmark, metric, or protocol choices.

Evidence quality

Low

Derived from extracted protocol signals and abstract evidence.

Abstract

The rise of automated bidding strategies in online advertising presents new challenges in designing and analyzing efficient auction mechanisms. In this paper, we focus on proportional mechanisms within the context of auto-bidding and study the efficiency of pure Nash equilibria, specifically the price of anarchy (PoA), under the liquid welfare objective. We first establish a tight PoA bound of 2 for the standard proportional mechanism. Next, we introduce a modified version with an alternative payment scheme that achieves a PoA bound of $1 + \frac{O(1)}{n-1}$ where $n \geq 2$ denotes the number of bidding agents. This improvement surpasses the existing PoA barrier of 2 and approaches full efficiency as the number of agents increases. Our methodology leverages duality and the Karush-Kuhn-Tucker (KKT) conditions from linear and convex programming. Due to its conceptual simplicity, our approach may offer broader applications for establishing PoA bounds.

Abstract-only analysis — low confidence

All signals on this page are inferred from the abstract only and may be inaccurate. Do not use this page as a primary protocol reference.

This paper looks adjacent to evaluation work, but not like a strong protocol reference.
The available metadata is too thin to trust this as a primary source.
The abstract does not clearly describe the evaluation setup.
The abstract does not clearly name benchmarks or metrics.

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Should You Rely On This Paper?

This paper is adjacent to HFEPX scope and is best used for background context, not as a primary protocol reference.

Best use

Background context only

Use if you need

Background context only.

Main weakness

This paper looks adjacent to evaluation work, but not like a strong protocol reference.

Trust level

Low

Usefulness score

0/100 • Low

Treat as adjacent context, not a core eval-method reference.

Human Feedback Signal

Not explicit in abstract metadata

Evaluation Signal

Weak / implicit signal

Usefulness for eval research

Adjacent candidate

Extraction confidence 15%

If you are doing eval pipeline work, start here:

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What We Could Verify

These are the protocol signals we could actually recover from the available paper metadata. Use them to decide whether this paper is worth deeper reading.

Human Feedback Types

missing

None explicit

No explicit feedback protocol extracted.

"The rise of automated bidding strategies in online advertising presents new challenges in designing and analyzing efficient auction mechanisms."

Evaluation Modes

missing

None explicit

Validate eval design from full paper text.

"The rise of automated bidding strategies in online advertising presents new challenges in designing and analyzing efficient auction mechanisms."

Quality Controls

missing

Not reported

No explicit QC controls found.

"The rise of automated bidding strategies in online advertising presents new challenges in designing and analyzing efficient auction mechanisms."

Benchmarks / Datasets

missing

Not extracted

No benchmark anchors detected.

"The rise of automated bidding strategies in online advertising presents new challenges in designing and analyzing efficient auction mechanisms."

Reported Metrics

missing

Not extracted

No metric anchors detected.

"The rise of automated bidding strategies in online advertising presents new challenges in designing and analyzing efficient auction mechanisms."

Human Feedback Details

Uses human feedback: No
Feedback types: None
Rater population: Not reported
Expertise required: Coding

Evaluation Details

Evaluation modes:
Agentic eval: None
Quality controls: Not reported
Evidence quality: Low
Use this page as: Background context only

Protocol And Measurement Signals

Benchmarks / Datasets

No benchmark or dataset names were extracted from the available abstract.

Reported Metrics

No metric terms were extracted from the available abstract.

Research Brief

Metadata summary

The rise of automated bidding strategies in online advertising presents new challenges in designing and analyzing efficient auction mechanisms.

Based on abstract + metadata only. Check the source paper before making high-confidence protocol decisions.

Key Takeaways

The rise of automated bidding strategies in online advertising presents new challenges in designing and analyzing efficient auction mechanisms.
In this paper, we focus on proportional mechanisms within the context of auto-bidding and study the efficiency of pure Nash equilibria, specifically the price of anarchy (PoA), under the liquid welfare objective.
We first establish a tight PoA bound of 2 for the standard proportional mechanism.

Researcher Actions

Compare this paper against nearby papers in the same arXiv category before using it for protocol decisions.
Check the full text for explicit evaluation design choices (raters, protocol, and metrics).
Use related-paper links to find stronger protocol-specific references.

Caveats

Generated from abstract + metadata only; no PDF parsing.
Signals below are heuristic and may miss details reported outside the abstract.

Recommended Queries

Research Summary

Contribution Summary

Next, we introduce a modified version with an alternative payment scheme that achieves a PoA bound of 1 + O(1){n-1} where n \geq 2 denotes the number of bidding agents.
This improvement surpasses the existing PoA barrier of 2 and approaches full efficiency as the number of agents increases.

Why It Matters For Eval

Next, we introduce a modified version with an alternative payment scheme that achieves a PoA bound of 1 + O(1){n-1} where n \geq 2 denotes the number of bidding agents.
This improvement surpasses the existing PoA barrier of 2 and approaches full efficiency as the number of agents increases.

Researcher Checklist

Gap: Human feedback protocol is explicit

No explicit human feedback protocol detected.
Gap: Evaluation mode is explicit

No clear evaluation mode extracted.
Gap: Quality control reporting appears

No calibration/adjudication/IAA control explicitly detected.
Gap: Benchmark or dataset anchors are present

No benchmark/dataset anchor extracted from abstract.
Gap: Metric reporting is present

No metric terms extracted.

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