TY - SER AU - Wichmann,Soren TI - Jackknifing the black sheep: ASJP classification performance and Austronesian T2 - Senri Ethnological Studies ; PY - 2018/// CY - Osaka-JP : PB - National Museum Ethnology, KW - ANTROPOLOGIA KW - LINGUISTICA KW - LENGUAS AUSTRONESIAS N2 - The performance of the Automated Similarity Judgment Program (ASJP) method of language classification has been tested quantitatively across the world's language families, as well as through more detailed, qualitative inspections of ASJP trees, comparing them with classifications of individual families by experts. Different quantitative performance evaluations all point to a relatively poor overall performance in the case of Austronesian. In order to investigate why Austronesian appears to be so recalcitrant, we identify the individual Austronesian language groups that are responsible for the discrepancies between ASJP and expert classifications-the 'black sheep' of the family-using a simple technique called jackknifing. It turns out that many of the languages which induce a poor fit between the expert and ASJP classifications belong to subgroups of Austronesian that are problematic in various ways. Thus, inaccuracies in the experts' classification of Austronesian must, at least partly, be responsible for the added amount of error in the ASJP classification when it comes to Austronesian ER -