Files
PHANTOM/README.md
Daniel Alves Rösel a9d73ccce5 Paper first fillout (#39)
* initial environemnt definitions

* high level defintion

* formlating the reward simply

* improved implementation

* tailored docker compose image for secondary tenaordboard

* preliminary desriptions and babble

* details on formulation and defintion of agent and its loop

* typos one

* more grammar issues

* fluidity improvements and refactors

* more decluttering and dnoising

* finalizing introduction review

* some methodology

* somehow this disappeared

* bit more of this and that

* methodology of how we do architectuer and online DP

* fix: compilation

* expanding on the taxonomy and economic references

* authoer notes

* acks + google GCP

* making space w new format nada lit review

* stronger lit review and more sources

* forgot about tables and graphs

* dedupe citations

* adding cloudflare

* fixing env vars

* updating docs with url

* upating embed

* fixing the url

* paper badge

* formaliztaion of rewards and adding definitions

* noisy formulations

* connecting some more dots here

* adding significant weight in prices

* fixing error

* fixing typos and consistency

* extra math formulations and refferenceot DRO

* fixing diagram of loops

* github mindmap

* fixing erro and thiknig about big picture

* enhancing the website

* goals methodology and gitignore

* some more references and theory links

* talking about some wtp

* feature: added wordcounter

* forcing latex builds and fixining the bib #

* refactor: update Cost of Information equations and notation for clarity

* some more math and refactors

* refactor: unify notation and improve clarity in COI equations

* refactor: generalize master function for demand estimation and pricing strategies

* we dont like math but we have to do it :(

* refactor: enhance Cost of Information framework with additional context and illustration

* refactor: enhance literature review and methodology sections with economic theory insights and system architecture details

* alining format to fit the rubric

* refactoring bibliography

* fix: align

* mdp additionally

* trying different title

* adding balance figure

* agentic givergence, finally

* fix: figure fonts adjusted to match
2026-01-13 17:07:29 +01:00

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<img width="200" align="left" src="https://github.com/user-attachments/assets/d148b00d-e9f9-4280-89cc-0cc866e17251" />
### PHANTOM
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```mermaid
mindmap
PHANTOM((PHANTOM Project))
North Star
Study how automated actors change markets
Build an experimentation platform for real-world-like commerce
Two-loop learning system
Online observation loop
Offline "defense gym" loop
Core Economic Questions
Price Discovery
How prices respond to demand signals
How signal quality changes with bots/agents
Demand & Elasticity
Shifts in willingness-to-pay
Short-run vs long-run elasticity
Market Efficiency & Welfare
Consumer surplus vs producer surplus
Deadweight loss from frictions/manipulation
Price Discrimination & Segmentation
Behavioral feature-based segmentation
Fairness vs profitability tradeoffs
Information Asymmetry
Agents amplify search and arbitrage
Sellers infer more about buyers; buyers infer more about sellers
Strategic Interaction
Consumers vs firms vs agents
Feedback loops: policy ↔ behavior ↔ price
Market Power & Competition
Algorithmic pricing as competitive tool
Risks: tacit coordination / "algorithmic collusion"
Externalities
Congestion and attention costs
Spillovers: one segments behavior affects others prices
System-Level View
Participants
Humans
Agents (automated buyers/actors)
Firms (pricing decision-makers)
Platform (measurement + control layer)
Markets Simulated
Repeated transactions
Limited inventory / capacity constraints (conceptually)
Time dynamics (learning over time)
Interventions
Pricing policies
Experiment assignment / randomized exposure
Agent behavioral policies (task-driven)
Measurement & Causal Inference
What is observed
Actions (search, click, purchase intent)
Context (product attributes, time, exposure)
Outcomes (conversion, revenue, churn proxies)
Identification strategy
A/B tests and randomization
Counterfactual baselines
Robustness checks (offline replay)
Key metrics
Revenue / profit proxies
Conversion & bounce
Price volatility / stability
Welfare proxies (e.g., dispersion, access)
Risk, Governance, and Ethics
Manipulation & Integrity
Bot-driven demand distortion
Measurement contamination
Fairness & Transparency
Differential pricing concerns
Explainability and auditability
Safety Constraints
Guardrails on price moves
Monitoring for runaway feedback loops
Outputs
Insights
When do agents raise/lower prices via behavior shifts?
Which market designs are robust to automation?
Defenses
Agent-aware pricing policies (robust control)
Detection + mitigation strategies (feature-level separability)
Platform Value
Reusable testbed for market + AI-agent research
```