id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-328859-qx7kvn0u	Zhu, Hongjun	Transmission Dynamics and Control Methodology of COVID-19: a Modeling Study	2020-09-21		.txt	text/plain	6169	368	55	Unfortunately, to our best knowledge, the existing models are based on the common assumption that the total population follows a homogeneous spatial distribution, which is not the case for the prevalence occurred both in the community and in hospital due to the difference in the contact rate. Using the model alongside the exclusive optimization algorithm, the spread process of COVID-19 epidemic in Wuhan city is reproduced and then the propagation characteristics and unknown data are estimated. The remainder of the paper is structured as follows: Section 2 introduces the previous work; Section 3 defines the related terminology; Section 4 explains the SEIR-HC model in detail; Section 5 describes the two-step optimization for parameter estimation; Section 6 shows the analysis results, and finally, Section 7 states the conclusions. ( ) : number of outbound travellers every day in Wuhan at time t; : contact rate in the community; ℎ : contact rate in hospitals; ( ) : incidence rate of the exposed individuals who are infected days ago, which follows the Weibull distribution;	./cache/cord-328859-qx7kvn0u.txt	./txt/cord-328859-qx7kvn0u.txt