This work presents a conceptual model of a quantitative assessment and mapping system for multimodal semantic contribution in newly created works of contemporary art. The SOQ system (sense, originality,quality) is proposed, integrating achievements in semiotics, multimodal aesthetics, network theory, and digital humanities. Contemporary approaches to quantitative art assessment demonstrate significant limitations when working with multimodal works. The visual semantic density model is limited to static visual media and does not account for interpretation dynamics. Quantitative style metrics, while providingobjective assessment of formal characteristics, ignore semantic aspects of works. The network model ofcreativity is not adapted to the multimodal nature of contemporary art. Semiotic approaches of the Lotmanian school, despite their conceptual depth, remain difficult to formalize for automated analysis. Theclassical Birkhoff formula (M = O/C) oversimplifies the complexity of contemporary artistic forms. The SOQ methodology overcomes identified limitations through analysis of semantic structures of works via four interpretation layers: static authorial, dynamic audience, personalized, and cumulative. The system applies nonlinear processing of semantic nodes using specialized AI agents for tracing interpretation dynamics. The formalized architecture includes a semantic structure graph, multimodal encoders, and a holistic integrity factor. The final SOQ evaluation is calculated through integration of nonlinear node processing, integrity coefficient, and adaptive weight evaluations from various sources (author, audience, experts, personal reactions, artistic world quality). An additional ArtScore metric provides specializedartistic assessment through composite indicators of aesthetic complexity, semantic depth, cultural resonance, and innovation.