Evidence

Literature and official statistics informing this prototype.

EVIDENCE

System Architecture

Conceptual pipeline behind the demo flow

UMKM→Product Concept Input→Configuration Engine→Customer Twin→Virtual Screening→Shortlist→Independent Human Validation→Human Calibration→Sustainability Assessment→Green Acceptance Sweet Spot→Recommendation→Physical Prototype / Market Test

Green Material & Process and Green Packaging as Drivers of Tourists' Sustainable Purchase Intention: Evidence from a PLS-SEM Study in Lake Toba, Indonesia

Poltak Pardamean Simarmata, Doris Yolanda Saragih, Hengki Mangirng Parulian Simarmata (2026)

DOI: 10.55606/makreju.v4i3.4450

Green PackagingGreen Material & ProcessSustainable Purchase Intention

Green Packaging → Sustainable Purchase Intention: β = 0.662, t = 10.988, p < 0.001
Green Material & Process → Sustainable Purchase Intention: β = 0.207, t = 3.321, p = 0.001
R²: 0.699
Sample: 306 respondents

β = 0.662 is a PLS-SEM path coefficient, not a decision weight — it is not interpreted as "green packaging gets 66.2% weight," a purchase probability, or system prediction accuracy. Used here only to justify why green packaging and sustainable materials are meaningful constructs in the prototype, not to define the ranking weights. The study is cross-sectional and conducted in a single destination (n = 306 tourists), so generalizability is limited.

Active Persona literature (2025)

Simaremare & Edison (2025)

Persona construction methodology

Referenced as background for the illustrative persona construction approach used in this prototype.

Active Persona literature (2026)

Simaremare & Edison (2026)

Persona construction methodology

Referenced as background for the illustrative persona construction approach used in this prototype.

OPeRA framework

ACL (2026)

Evaluation / rationale-grounded agent framework

Referenced as conceptual background for structuring evaluation prompts and rationale generation in a future production Customer Twin.

Statistik pariwisata Provinsi Sumatera Utara

BPS Provinsi Sumatera Utara (2026)

Kunjungan wisatawan mancanegara melalui pintu masuk Sumatera Utara

2024: 250,413 kunjungan
2025: 292,481 kunjungan
Growth: 16.80%

Data provinsi, bukan data kunjungan khusus Danau Toba. Digunakan hanya sebagai konteks pariwisata, bukan bukti permintaan produk berkelanjutan. Source: BPS Provinsi Sumatera Utara, 2 Februari 2026.