id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
work_htfht4hrybdz3jty5t7367hreu	Lixing Zhu	Hierarchical Viewpoint Discovery from Tweets Using Bayesian Modelling	2018	12	.pdf	application/pdf	8952	1164	68	Hence, a hierarchical Pitman-Yor process is employed as a prior for modelling the generation of phrases Bayesian model, called Hierarchical Opinion Phrase (HOP) research: opinion mining based on topic models, hierarchical He (2016) proposed a topical phrase model which extends TopMine by using the hierarchical Pitman-Yor Process (HPYP) to model the generation of HLDA (Blei et al., 2010) as illustrated in Figure 2(a) assumes that each topic is tied to a node in a tree and the documents are generated by first selecting a path in the tree, then We use an HPYP to model the generation of phrases assigned with the same topic. vote leave EU Brexit remain referendum UK stay country Britain EU Brexit UK leave leaving trade Britain remain economy immigration stay wait long place life man forever love longer friends Brexit EU leave vote UK stay Britain remain life referendum	./cache/work_htfht4hrybdz3jty5t7367hreu.pdf	./txt/work_htfht4hrybdz3jty5t7367hreu.txt