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The Central–Eastern Malayo-Polynesian (CEMP) languages form a proposed branch of the Malayo-Polynesian languages consisting of over 700 languages (Blust 1993).
In the original proposal, CEMP is divided into Central Malayo-Polynesian (CMP) and Eastern Malayo-Polynesian (EMP). However, CMP is generally understood to be a cover term for the non-EMP languages within CEMP, which form a linkage at best rather than a valid clade.
The Central Malayo-Polynesian languages may form a linkage. They are for the most part poorly attested, but they do not appear to constitute a coherent group. Many of the proposed defining features of CMP are not found in the geographic extremes of the area. Therefore some linguists consider it a linkage; a conservative classification might consider CMP to be a convenient term for those Central–Eastern languages which are not Eastern Malayo-Polynesian (Grimes 1991).
The Eastern Malayo-Polynesian languages extend from the coasts of Halmahera across the Pacific. This subgroup is still controversial as it is solely based on lexical evidence, with no shared phonological innovations. In contrast, the two individual branches, South Halmahera–West New Guinea and Oceanic, each are well-defined by phonological and lexical innovations, and universally accepted as valid subgroups.
Criticism
CEMP is rejected as a valid clade by Donohue & Grimes (2008), who do not consider CEMP to even be a linkage. Donohue & Grimes (2008) argue that many features claimed to define CMP or CEMP are also found in some of the more conservative Western Malayo-Polynesian languages and even Formosan languages. Edwards & Grimes (2021) also does not consider CEMP to be a coherent branch.
Blust, Robert (1993). "Central and Central-Eastern Malayo-Polynesian". Oceanic Linguistics. 32 (2): 241–293. doi:10.2307/3623195. JSTOR3623195.
Ross, Malcolm (2005), "Some current issues in Austronesian linguistics", in D.T. Tryon, ed., Comparative Austronesian Dictionary, 1, 45–120. Berlin: Mouton de Gruyter.
Donohue, Mark; Grimes, Charles E. (2008). "Yet More on the Position of the Languages of Eastern Indonesia and East Timor". Oceanic Linguistics. 47 (1): 114–158. JSTOR20172341.
Fay Wouk and Malcolm Ross (ed.), The history and typology of western Austronesian voice systems. Australian National University, 2002. hdl:1885/146136doi:10.15144/PL-518
K. Alexander Adelaar and Nikolaus Himmelmann, The Austronesian languages of Asia and Madagascar. Routledge, 2005.