Finally for each advertisement content, 3 elements with the column numbers associated with the top elements are chosen.
Since the Kolmogorov complexity is not computable, we approximate the complexity of an advertisement content by first removing stop words and then computing entropy of the content [25].
We set (n=4) and use the range of (4,4) to compute normalized n-grams (using TF-IDF) of each advertisement content.
A close investigation of all job advertisements also reveals no systematic differences in job openings between foreign and local companies in terms of qualification, job title, and advertisement content.
As only a single person (AM) classified the advertisement content, a validation study using another person was conducted (see the acknowledgements).
However, none of the parent studies mentioned the sub-themes 'specifically targeting hard-to-reach groups' and 'offering multiple 'soft' entry points', and only one study reported on 'multichannel promotion' and one study on 'effective advertisement content'.
We ultimately create a matrix whose rows and columns correspond to the advertisements contents and their associated 4-grams, respectively.
The campaign also includes print advertisements, content on a section of a Web site (chiccousa.com/timessquare), online ads, outreach through so-called mom bloggers and a presence in social media like Facebook and Twitter.
Two months into sales, Forrester Research predicted that Apple would only sell a million Apple TV units, because consumers prefer advertisement-supported content over paid content.
This is because it was advertisement feature content that was published as part of a commercial deal and funded by an advertiser.
