This approach is an extension of topic identification, as described in [2].
On the other hand, there have been a wide variety of extensions of topic models over the recent years, for instance allowing topics to be correlated (Blei and Lafferty, 2007) or form a hierarchical structure (Blei et al., 2003).
Out of the five questions from category I, question numbers 2, 4, and 5 not just assessed students for the topic explained in the learning material, but the questions also covered the topics that could be treated as an extension of the topic.
Griffiths et al. [8] presented an extension of the topic model that is sensitive to word order and automatically learns the syntactic factors as well as the semantic ones.
Thirdly, the Ministry of Agriculture sent agricultural engineers to each municipality in the West Bank to provide guidance and extension services on a variety of topics, including pesticide use and handling [Hebron Agriculture Department, 2006 personal communication].
Another issue that Rawls lists as a problem of extension is the topic of international relations.
In particular, the charge of incompleteness seems most plausible when we consider certain "problems of extension", that is, topics where it is unclear whether public reason can be extended to provide reasonable answers (Rawls 1996, 244 246).
Future directions in ML-based VQA should include the extension of this approach to emerging topics such as 3D video and saliency maps.
Nonetheless, the widespread use of MPH still suggests a need for further research on this important topic, including extension of this study to examine potential long-term effects.
In particular the extension by topic-related additional information represents a revaluation of the results.
Topic-aware independent cascade (TIC) model [16] is an extension of the IC model to incorporate topic mixtures in any diffusion item.
