Scaling Observation-aware Planning in Uncertain Domains
Adrian Zvizdenco, Arthur Conrado Veiga Bosquetti, Alberto Lluch Lafuente, Christoph Matheja
Abstract
Deciding which sensing capabilities to deploy on an agent in uncertain domains is a fundamental engineering challenge, in which one balances task achievability against the high costs of hardware and processing. This problem has previously been formalized as the Optimal Observability Problem (OOP), based on the well-known Partially Observable Markov Decision Process (POMDP) model for decision-making. This work studies (sub-)symbolic techniques to scale solving of decidable fragments of the OOP, namely the Sensor Selection Problem (SSP) and the Positional Observability Problem (POP). Besides improving the original approach based on parameter synthesis, we develop a new solving method that identifies sensible observation functions via decomposition of POMDPs, improving performance by 3 and 5 orders of magnitude for instance size and runtime, respectively.
AI Impact Assessments
(1 models)Scientific Impact Assessment
Core Contribution
This paper tackles the computational scalability of the Optimal Observability Problem (OOP) for POMDPs—the question of how to optimally assign sensing capabilities (observation functions) to an agent operating under uncertainty, subject to budget constraints. Building on the formalization by Konsta et al. (2024), which reduced decidable OOP fragments to parameter synthesis for typed parametric Markov chains (tpMCs) solved via SMT, this work offers two main contributions:
1. Improved SMT encodings: Native Boolean variable encoding, Bellman inequality relaxations, and pseudo-Boolean cardinality constraints that collectively yield ~10³× faster solving and ~75× larger solvable instances compared to the original approach.
2. A decomposition-based algorithm (A_G): A heuristic enumeration method that decomposes the OOP into individual POMDP evaluations by partitioning states into "atomic distinguishability groups" based on optimal action equivalence. This achieves an additional ~10³× speedup and ~10²× instance size increase beyond the SMT improvements.
Methodological Rigor
The paper is methodologically structured but has notable limitations in rigor:
Strengths in methodology:
Weaknesses:
Potential Impact
The problem addressed—optimal sensor placement under budget constraints—has clear practical relevance in robotics, autonomous systems, security, and cyber-physical systems. Cost-effective sensor deployment is a genuine engineering concern.
However, the practical impact is tempered by several factors:
The decomposition paradigm—separating observation function search from POMDP evaluation—is a conceptually valuable architectural insight that could inspire follow-up work beyond the specific algorithms proposed.
Timeliness & Relevance
The paper addresses a timely topic at the intersection of AI planning, formal verification, and system design. As autonomous systems proliferate, principled methods for sensor budget optimization become increasingly relevant. The work builds directly on a 2024 CAV paper, making it a timely follow-up. The connection to ETR-complete problems and SMT solving places it within active research communities.
However, the field of POMDP solving has been advancing rapidly with deep learning and Monte Carlo methods, which this paper does not engage with substantially. The formal verification perspective is valuable but represents a niche within the broader POMDP community.
Strengths & Limitations
Key Strengths:
Key Limitations:
Additional Observations
The paper's contribution is primarily engineering-oriented rather than foundational. The theoretical insight (atomic distinguishability groups) is relatively straightforward given the observation that states with identical optimal action sets can be grouped. The main value lies in demonstrating that this simple idea, combined with careful SMT encoding, yields dramatic practical improvements. The work would benefit from evaluation on more diverse and realistic problem instances to establish broader applicability.
Generated May 22, 2026
Comparison History (20)
Paper 1 offers a profound methodological breakthrough in fundamental AI planning, achieving a 3 to 5 orders of magnitude improvement in instance size and runtime for solving POMDPs. This massive algorithmic leap has broad, cross-disciplinary implications for robotics, operations research, and decision-making under uncertainty. While Paper 2 provides a strong, timely application for 6G and UAV tracking, Paper 1's fundamental theoretical advancement and extraordinary performance gains suggest a deeper, more enduring scientific impact across multiple fields.
Paper 1 offers a massive fundamental improvement (3 to 5 orders of magnitude in instance size and runtime) for solving Partially Observable Markov Decision Processes (POMDPs). Because POMDPs are a foundational model for decision-making under uncertainty, these algorithmic advances have broad applicability across AI, robotics, and operations research. While Paper 2 presents a valuable and practical multimodal framework for UAV sensing, its contributions are more domain-specific compared to the foundational and broadly applicable theoretical advances in Paper 1.
Paper 2 demonstrates dramatic computational improvements (3-5 orders of magnitude) for a well-formalized problem (OOP/POMDP), with clear practical implications for sensor deployment in robotics and autonomous systems. Its methodological contribution—decomposition-based solving of POMDPs—has broad applicability across planning, robotics, and decision-making under uncertainty. Paper 1 combines causality with argumentation for XAI, which is novel but incremental, demonstrated only on two benchmarks, and competes in an already crowded XAI landscape without clearly establishing superiority over existing methods.
Paper 1 addresses a fundamental problem in AI planning under uncertainty with rigorous formal methods, achieving dramatic scalability improvements (3-5 orders of magnitude) for well-established formalisms (POMDPs). Its contributions are methodologically rigorous, broadly applicable across robotics, autonomous systems, and decision-making under uncertainty. Paper 2, while timely, evaluates specific LLM providers on a single game (Risk) with results that will quickly become outdated as models evolve. Its findings are narrower, more empirical/observational, and lack the lasting theoretical contribution and cross-domain applicability of Paper 1.
Paper 1 likely has higher impact due to timeliness and breadth: it targets the rapidly expanding LLM-agent ecosystem and provides a benchmark suite plus reference multi-agent implementation spanning retrieval, simulation, HPC orchestration, and manufacturing control. Benchmarks and tooling can become community infrastructure with broad cross-domain adoption. The methodology includes gated RAG evaluation and varied prompt/agent workflow tests, supporting rigorous comparisons across models. Paper 2 offers strong algorithmic advances for OOP/POMDP fragments with large performance gains, but the niche scope and narrower applicability may limit overall impact despite higher theoretical rigor.
Paper 1 proposes an end-to-end AI agent harness for complex data visualization, directly contributing to the highly relevant 'AI Scientist' paradigm. Its ability to autonomously generate customized visual analysis apps from high-level descriptions offers massive cross-disciplinary applicability across virtually all scientific fields dealing with complex data. While Paper 2 presents impressive methodological improvements in POMDP solving with huge performance gains, its impact is primarily confined to robotics and formal planning. Paper 1's broader real-world utility, cross-domain relevance, and alignment with cutting-edge autonomous AI research give it higher potential scientific impact.
Paper 2 addresses a fundamental theoretical problem (optimal observability in POMDPs) with rigorous methodological contributions, achieving 3-5 orders of magnitude improvements in scalability. It advances well-established formal frameworks with broad applicability across robotics, autonomous systems, and AI planning. Paper 1, while practically useful, describes an engineering platform for autonomous research whose evaluation relies on internal benchmarks and subjective expert judging, limiting its scientific rigor and generalizability. Paper 2's formal contributions are more likely to have lasting impact across multiple research communities.
Paper 1 addresses the highly practical and widely studied domain of vehicle routing problems with a novel multi-agent framework (COAgents) that achieves state-of-the-art results on established benchmarks. Its combination of cooperative agents with a graph-based search representation is innovative and demonstrates strong empirical results (14-44% gap reductions). The framework's modularity and applicability across VRP variants gives it broad appeal. Paper 2 addresses a more niche problem (optimal observability/sensor selection for POMDPs) with impressive computational speedups but narrower applicability. Paper 1's practical relevance to logistics and operations research, plus code availability, suggests wider adoption and citation potential.
Paper 2 addresses a timely and broadly impactful question about LLM reliability in high-stakes forecasting domains (finance, epidemiology). Its finding of inverse scaling—where more capable models perform worse on tail risks—challenges prevailing assumptions and has immediate implications for AI safety, deployment policy, and benchmark design. It introduces a new benchmark, demonstrates the effect across multiple real-world domains, and provides actionable recommendations. Paper 1 makes solid contributions to POMDP planning scalability but targets a narrower community. Paper 2's cross-disciplinary relevance and timeliness give it higher potential impact.
Paper 1 addresses a highly timely and broadly impactful problem—evaluating LLMs for clinical decision support in realistic interactive settings. The finding that multi-turn evidence seeking significantly degrades LLM diagnostic performance challenges prevailing assumptions from static benchmarks, with direct implications for patient safety and AI deployment in healthcare. The benchmark and methodology are likely to influence a large research community working on LLMs in medicine. Paper 2, while technically impressive with major computational improvements, addresses a more specialized problem (POMDP sensor selection) with a narrower audience and less immediate societal impact.
Paper 1 addresses a highly timely and broadly relevant issue—how AI affects human skill development—with significant real-world implications for education, policy, and cognitive science. While Paper 2 offers impressive algorithmic improvements (orders of magnitude) in POMDP planning, its impact is largely confined to the specific subfield of robotics and decision-making. Paper 1's cross-disciplinary appeal and societal relevance give it higher potential scientific impact.
Paper 1 offers a profound algorithmic breakthrough, improving runtime by 5 orders of magnitude and instance size scaling by 3 orders of magnitude for POMDP-based planning. This fundamental advancement in tractability will have a lasting, rigorous impact on autonomous agent design and robotics, surpassing the likely transient impact of an LLM benchmark.
Paper 2 has higher potential impact due to a more broadly applicable and timely contribution to planning under uncertainty (POMDPs) with substantial scalability gains (orders-of-magnitude improvements) and clear methodological advances (new decomposition-based solver plus improvements over parameter synthesis). Its applications span robotics, autonomy, sensor design, and AI planning. Paper 1 is novel and relevant for safety assurance, but is more domain-specific (safety cases/assurance arguments) and its update rule is intentionally non-Bayesian, which may limit perceived rigor and adoption outside safety engineering.
Paper 1 demonstrates massive algorithmic improvements (up to 5 orders of magnitude in runtime) for solving fundamental challenges in POMDPs and sensor selection. This breakthrough enables planning in highly uncertain domains previously considered intractable, offering broad, foundational impact across AI and robotics. Paper 2 is valuable for safety assurance but represents a more specialized methodological increment.
Paper 2 likely has higher impact due to strong novelty in identifying an evaluation failure mode for VLM explainability and proposing a principled, scalable cross-modal synergy metric with strong empirical validation (high correlation, major speedup) across multiple models/datasets/methods. Its applications (auditing multimodal reasoning, safety in high-stakes deployments) are broad and timely given rapid VLM adoption. Paper 1 offers substantial performance gains in a specialized POMDP observability/sensor selection niche, but its breadth and immediate relevance across fields are narrower than the VLM XAI benchmarking contribution.
Paper 1 addresses a highly timely and critical bottleneck in modern AI: the reliable deployment of LLM agents in production. By formalizing the 'stochastic-deterministic boundary' and mapping established distributed-systems patterns to LLM architectures, it bridges software engineering and AI. This provides broad, immediate real-world utility across industries. While Paper 2 offers impressive algorithmic scaling for POMDPs, its impact is largely confined to classical planning and robotics, whereas Paper 1 shapes the rapidly expanding, cross-disciplinary field of agentic AI systems.
Paper 2 addresses a highly timely and relevant problem in Generative AI by evaluating upstream prompters, introducing a novel benchmark and agentic evaluator. Given the massive adoption of multimodal LLMs and text-to-image systems, evaluation frameworks in this space typically accrue significant citations and shape future model development. While Paper 1 offers impressive algorithmic improvements for POMDPs, Paper 2 has broader immediate real-world applicability and cross-disciplinary impact in a rapidly expanding field.
Paper 2 is likely to have higher scientific impact due to its timeliness and broad real-world relevance: it introduces an evaluation framework for LLM alignment failures in armed-conflict contexts, a high-stakes deployment setting with immediate policy, safety, journalism, and humanitarian applications. Its cross-provider, multi-scenario empirical methodology can become a benchmark and influence alignment evaluation practices across industry and academia. Paper 1 offers strong novelty and rigor in scaling decidable fragments of POMDP observability optimization, but its impact is more specialized to planning/sensor selection communities and narrower in societal reach.
Paper 2 likely has higher scientific impact: it advances core planning/decision-making theory for uncertain domains by scaling solutions to the Optimal Observability Problem and related fragments, with reported 3–5 orders-of-magnitude performance gains—an enabling methodological contribution applicable to robotics, autonomous systems, and sensor-design across fields. Paper 1 is timely and useful as an applied benchmark for LLM spreadsheet agents in finance, but its main contribution is evaluative/taxonomic and domain-specific, with less fundamental algorithmic novelty and narrower cross-disciplinary reach.
Paper 2 has higher potential impact: it advances a core problem in planning under uncertainty (sensor/observation design for POMDPs) with a new decomposition-based solver and dramatic scaling gains (3–5 orders of magnitude), enabling larger real-world robotics/autonomy deployments. The contribution is methodologically clearer and more generalizable across domains (verification, control, robotics, AI planning). Paper 1 is timely and interesting for computational political communication, but is limited by a small case study, heavy reliance on proprietary LLM judgments, and narrower cross-field applicability.