Arvutuslikke vaateid läänemeresoome regilaulude varieeruvusele. „Harja otsimine“ ja „Mõõk merest“

The article introduces the joint Finnic runosong database and associated web environments and applications developed collaboratively by computer scientists and folklorists from Finland and Estonia. These tools facilitate new approaches to analyzing the extensive dataset. Within the research framework, various computational solutions have been devised in order to identify and associate with one another similar verses and texts that differ in orthography, language, and content. These methods have also been implemented in the web environment Runoregi (runoregi.rahtiapp.fi), allowing researchers and enthusiasts interested in traditional oral poetry to easily navigate the network of variant verses, motifs and texts, and to compare various texts and their elements. Additionally, there is a web application for maps and other visualizations integrated with the database and Runoregi environment. While Runoregi serves as a valuable tool for the close reading and comparison of texts, obtaining an overview of large amounts of texts (the database currently contains over 280,000 texts) remains a challenge. We address this issue through an examination of the frequently contaminated song types “Searching for the Comb” and “Sword from the Sea”. Given that not all texts in the database are consistently typologized by folklorists, our sample includes texts identified by means of similarity calculations as similar to those sorted under the types under consideration. We computed adjacency scores for verse clusters obtained as a result of clustering verses by their similarity scores using the Chinese whispers method, presenting the results as a network graph (with verse clusters as nodes and adjacency scores as edges). The groups appearing in the network reflect regional plot developments and elements. Despite sharing plotlines and even poetic formulas, a clear divide emerged between Northern and Southern Finnic texts. As our verse similarity calculations may not capture linguistically distant variants, we manually consolidated variants of the same verse (with identical root composition of content words) across different dialects and languages. By applying adjacency computation and network visualisation, the graph now represents the general Finnic plot with the main alternative developments. The graph also highlights the stabler cross-Finnic verse types associated with significant plot turns.