Table 1.
Summary of the measured films partitioned into the four different age recommendation classes.
Fig 1.
The upperpanel shows the mixing ratio of isoprene (in ppb) during the film "I’m off then". This time series was already divided by the number of viewers. The black line shows the measured values and the red one the modelled mixing ratio assuming a constant emission rate of isoprene. The lower panel shows the residuals obtained by subtracting the measured times series from the modelled one.
Table 2.
Summary of the extracted features.
Table 3.
Summary of several VOCs with the corresponding area under ROC curve for the different age classes.
AUC values of 0.70 and higher were highlighted in bold font.
Fig 2.
Performance measures for isoprene models.
The box plots of the calculated area under ROC curve values(left) and average Precision-Recall curves for all age recommendations(right). The performance measures were derived from the isoprene models. The box plots on the upper left panel in Fig 2 the thick black line in the middle of the box indicates the median value for each group. The box comprises the interquartile range (IQR) of the data and the whiskers define 1.5 times the IQR or the minimum and maximum if no points exceed the 1.5 time IQR.
Fig 3.
Performance measures for isoprene models involving only the “FSK 6” films.
Area under ROC curve and Precision-Recall-curves divided up into the different films in the age recommendation "FSK 6". The film “Walking with Dinosaurs 3D” was labelled as “action” whereas “Buddy” and”The Secret Life of Walter Mitty” are comedy films.
Fig 4.
Performance measures for isoprene models involving only the “FKS 0” films.
Area under ROC curve and Precision-Recall-curves divided up into the different films in the age recommendation "FSK 0". The film “Help I’ve shrunk my teacher” was attended by a large proportion of viewers younger than 12 (64%) whereas the film “I’m off then” was only seen by viewers of 12 or older.
Fig 5.
Boxplot with the height of the highest peak for the different age recommendations.