The Pessoa Knowledge Graph: A Federated Linked-Data Representation of the Heteronymic System (EA-PKG-01) v1.0

EA-PKG-01 v1.0 — Flagship deposit launching the Pessoa Knowledge Graph (PKG) project: a sustained initiative to construct, on Wikidata and federated open-data infrastructure, a systematic representation of Fernando Pessoa's heteronymic system. The document addresses three simultaneous gaps in digital Pessoa studies: the absence of a canonical heteronym inventory encoded in open data; the absence of encoded master-disciple, meta-heteronymic co-authorship, and cross-influence relationships among Pessoa's voices; and the absence of a formal typology distinguishing orthonym, heteronym, semi-heteronym, proto-heteronym, para-heteronym, and pseudonym — categories Pessoa himself articulated but that existing data infrastructure treats as undifferentiated. The project adopts Wikidata as primary substrate, with dual labeling in English and Portuguese (pt-br and pt-pt), generous citation to Brazilian and Portuguese scholarly production (Lopes, Lourenço, Gil, Perrone-Moisés, Benedito Nunes, Santiago, Cicero, Haroldo and Augusto de Campos, Pessoa Plural journal), and architecture designed for future public visualization on a dedicated domain. Target scale: ~150-200 Wikidata entities across 9 layers (Pessoa, heteronyms, works, publication venues, institutional context, contemporaries, influences inbound, influences downstream, concepts). The project's trajectory extends beyond Pessoa to map heteronymic practice as a describable theoretical object with history. Pre-Pessoan precursors (Kierkegaard), parallel developments (Machado), and downstream engagement (Borges, Saramago, Yeats, Brazilian concretists, contemporary Portuguese poets) are included. The contemporary extension — heteronymic practice in the AI era — is developed in the companion deposit EA-PKG-03. Dual-language pt-br/en abstracts are included. The deposit is offered as open scholarly infrastructure under CC BY 4.0, with explicit invitation to Lusophone Pessoa scholars for collaboration, correction, and extension. Companion deposits: EA-PKG-02 (Heteronymic Typology: A Formal Classification of Authorial Voices in Pessoa and Beyond); EA-PKG-03 (The New Human: Post-Pessoa Heteronymic Practice in the AI Era). ∮ = 1