be inattentive

References in classic literature ?
If we take into the account the momentary humors or dispositions which may happen to prevail in particular parts of the society, and to which a wise administration will never be inattentive, is the man whose situation leads to extensive inquiry and information less likely to be a competent judge of their nature, extent, and foundation than one whose observation does not travel beyond the circle of his neighbors and acquaintances?
After conducting Bayesian network assessment, if a student is found to be inattentive or fatigued, then the alert feedback is sent instantly (Grauman et al., 2001; Hamada et al., 2002).
In response to question 1, "I was attentive during class," the percentage of students who still considered themselves to be inattentive fell to 10 percent, representing a reduction of 33 percent in comparison with the percentage in stage A, while 48.3 percent of the students considered themselves to be attentive during class, a rise of 30 percent in comparison with the percentage in stage A.