Hi Christian,
> ...
> 3) The UI
> Faceted browsing is a suitable approach to assist end-users in searching
> within a mostly unknown data space. They always filter the collection by
> selecting only from existing characteristics of the remaining items. This is
> easier to handle than a free, textual query specification and it assures not
> to deliver an empty result set.
> Since the paradigm is widely used in e-commerce application (amazon,
> ebay,...), also end-user know it well.
>
> Regarding the exploration, I think one should not only consider AND-ed facets
> (intersection) but also OR-ed facets (union). At a "faceted search" level,
> combining AND and OR is solved by Solr and other systems that allows you to
> ask for e.g. all books with author (A OR B) AND with language (it OR en).
> When it comes to "faceted browsers" (UI) this is more complicated as giving
> to much freedom would result in a complicated interaction, which is in
> contrast with the nature of a faceted browser (it should be simple to use).
> In systems like Booking.com facets values are OR-ed within the same facet
> category (e.g. star rating) and AND-ed among different categories. There is
> no way of AND-ing two facet values within the same facet category, and this
> makes perfectly sense as their facets are purely "orthogonal", but this is
> not always the case (see above).
> Do you know some systems addressing this?
Explorator allows that, and other set operations as well.
Cheers
D
