DERIV: distributed brand perception tracking framework

Journal of Big Data

Table 1 Number of storylines in each band for training for the use cases described

	Rapidly improving		Slowly improving		Holding steady		Slowly deteriorating		Rapidly deteriorating
	Positive	Negative	Positive	Negative	Positive	Negative	Positive	Negative	Positive	Negative
Fashion apparel	483	374	172	111	191	102	322	141	523	248
Political candidate	743	429	323	165	238	218	297	224	529	381
Electric car	181	144	177	145	122	201	222	147	143	188