Beyond Optimizing for Clicks: Incorporating Editorial Values in News Recommendation
Table 4. Serendipity per attribute. * indicates statistically significant difference with p<0.05.
['Attribute', 'manual', 'RecSys']
We find no significant difference in section serendipity, but we do find manual yields more serendipitous rankings in ‘tags’ and ‘authors’ than RecSys. The latter is more serendipitous in ‘word embeddings.’ This is expected, as ‘tags’ and ‘authors’ are two important user-article features, which means recommendations will be steered towards more similar tags and authors (see also our observations with Diversity, above).