Introduction to Big Data - Data Warehousing in the Age of Big Data - page 8

Sentiment by Percent Sentiment by Count

Negative (26%)

Positive (67)

Negative (23)

Positive (74%)

0 20 40 60 80

FIGURE 1.1
User sentiment analysis for burgers across the United States.

Sentiment by Percent Sentiment by Count

Negative (57%)

Positive (12)

Negative (16)

0510 15 20 25 30

Positive (43%)

FIGURE 1.2
User sentiment analysis of drive-thru performance of U.S.-based fast-food restaurants.

Sentiment by Percent Sentiment by Count

Negative (74%)

Positive (24)

Negative (70)

Positive (26%)

40 60

0 20 80

FIGURE 1.3
User sentiment analysis of fast-food quality in the United States.

Survey data
The data sample in Figure 1.4 is from a survey of fast-food restaurants from FoodSource ( www.food-
source.com ). A survey typically will consist of hundreds of such responses and needs to be processed
for creating a cluster from a population and their associated responses. Often the data becomes cum-
bersome to manage due to lack of demographics of the survey targets.