“…The survey by Kong & Fu (2018) is much more recent, however it is also limited in scope to action recognition. Another recent survey, by Viana et al (2019) is limited 105 in scope to bibliometric analysis, that is, by evaluating merely the publication trends on the topic of AAL, by year, country, and other such non-technical dimensions. Conversely, Sathyanarayana et al (2018) is a very complete, broader scope review, however it covers only works up to 2015.…”