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Materials informatics has become a central paradigm in materials science, leveraging machine learning and large-scale datasets to accelerate property prediction, discovery, and design. However, prevailing approaches often treat data as a neutral substrate for modeling, obscuring the value-laden processes through which data is generated. Measurement choices—what properties to quantify, which materials to prioritize, and which experimental or computational protocols to employ—are inherently shaped by epistemic commitments, practical constraints, and broader societal priorities. These choices embed values into data infrastructures, systematically influencing which material phenomena become visible and which remain obscured in downstream models. This manuscript advances a conceptual framework that interprets measurement choices as value-mediated interfaces linking scientific priorities to data constitution and modeling feedback in materials informatics. The framework elucidates how value horizons, choice architectures, data formation processes, and modeling circuits interact to produce steering logics, trade-offs, and path-dependent dynamics. By reframing data bias as a constitutive outcome of value-conditioned measurement rather than a purely technical artifact, the framework reveals characteristic failure modes—including value lock-in, patterned absences, and self-reinforcing feedback—that constrain epistemic exploration. Integrating insights from materials informatics, data bias studies, and philosophical analyses of scientific practice, the framework provides a diagnostic lens for understanding the non-neutrality of data in iterative AI-driven workflows. Rather than prescribing methodological interventions, it foregrounds the epistemic consequences of measurement decisions, inviting greater reflexivity in shaping data landscapes over time. This perspective repositions materials informatics as an evolving epistemic system whose possibilities and limits are co-produced by values, measurements, and models.

The integration of artificial intelligence (AI) into materials science has substantially accelerated property prediction and materials screening. Yet, the predominance of data-driven correlations has exposed a persistent epistemic gap between predictive success and the derivation of interpretable, generalizable design rules. This conceptual manuscript develops a theoretical framework for knowledge extraction in materials AI that explicitly addresses this gap by reframing the transition from correlations to design rules as a staged epistemic process rather than a by-product of model performance. Drawing on literature in materials informatics, data bias, and philosophy of science, the framework organizes knowledge extraction into four interconnected stages—Correlation Mapping, Bias Interrogation, Value Integration, and Rule Synthesis—linked through continuous epistemic validation. The model foregrounds epistemic agency, requiring explicit scrutiny of assumptions, biases, and value commitments before causal inference. Six propositions articulate the conditions under which AI-derived correlations may legitimately support prescriptive design claims, emphasizing reflexive feedback and epistemic governance. By conceptualizing knowledge extraction as a norm-governed process of justification, this work provides a theoretical scaffold for transforming AI outputs into scientifically defensible design rules, contributing to a more reliable and responsible epistemology of materials discovery.

In the rapidly evolving field of materials artificial intelligence (AI), the prevailing emphasis on scaling data volumes and computational resources has driven significant advancements in predictive modeling and discovery processes. However, this conceptual manuscript interrogates the implicit assumption that larger scales invariably yield superior outcomes, positing instead that unchecked expansion introduces intricate interaction dynamics that undermine the integrity of materials informatics. Through an integrative analysis, we explore how escalating data scales interact with inherent biases, leading to amplified distortions in representational fidelity and epistemic reliability. The framework delineates trade-offs wherein quantitative abundance may erode qualitative depth, fostering feedback structures that perpetuate homogeneity in material explorations at the expense of diversity. Ethical reasoning underscores the epistemic implications, revealing how scale-driven approaches can inadvertently prioritize dominant paradigms, marginalizing underrepresented material classes and contexts. Systems-level insights highlight steering logics that balance scale with interpretive nuance, advocating for calibrated integrations that preserve domain-specific insights. This argument reframes scale not as an unequivocal virtue but as a contingent factor within broader conceptual interpretations, urging a reevaluation of priorities in applied AI for materials science to foster sustainable and equitable progress.

The integration of artificial intelligence into materials science has accelerated property prediction, inverse design, and discovery pipelines. Yet, the reliability of resulting scientific claims remains vulnerable to distribution shifts—systematic differences between training and inference data distributions arising from variations in synthesis protocols, characterization instruments, environmental conditions, or sampling biases. This purely conceptual manuscript develops a novel theoretical framework for robust materials AI inference in the presence of such shifts. We posit that distribution shifts do not merely degrade predictive accuracy but fundamentally alter the epistemic status of scientific claims by introducing unaccounted covariances between material descriptors and latent generative processes. The framework reconceptualizes inference as a multi-layered epistemic process: (i) shift ontology delineation, (ii) value-laden alignment of data representations with domain invariants, and (iii) claim robustness via counterfactual stabilization. By synthesizing insights from materials informatics, machine learning theory on distribution shifts, and philosophical analyses of epistemic values in science, we argue that robust inference requires explicit modeling of shift-induced epistemic uncertainty rather than mitigation as a post hoc engineering concern. This theory provides a conceptual scaffold for evaluating the validity of AI-derived materials claims across heterogeneous datasets, advancing a shift from performance-centric to epistemically grounded AI deployment in materials science.