@inproceedings{SIGIR-1999-Hofmann,
	author        = "Thomas Hofmann",
	booktitle     = "{Proceedings of the 22nd International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	cdrom         = "SIGIR1999/P050.pdf",
	doi           = "10.1145/312624.312649",
	pages         = "50--57",
	publisher     = "{ACM}",
	title         = "{Probabilistic Latent Semantic Indexing}",
	year          = 1999,
}