Re: Comments on Norbert's topological extension of relational algebra

Norbert_Paul wrote:
> Tegiri Nenashi wrote:
>
>> Here is a paper reinforcing that intuition:
>> http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.135.2459&rep=rep1&type=pdf
>>
>
> No. This is Egenhofer's "Topological Relations" approach. It is
> completetly different.

I Took a closer look at the paper. This seems to be one from the RCC8 community: Note that the classical

    "Note that PO,TPP,TPP^T, NTPP, NTPP^T, EC, DC, 1' are      pairwise disjoint, and their sum is 1." appears on Page 6.

The abstract of

    http://www.spatial.maine.edu/~max/RaBTR.pdf mentions "the eight fundamental topological relations".

It always astonishes me that both communities, RCC8 and Egenhofer, have extremely similar concepts but almost never does one group cite papers from the other group. The above paper does not even mention Egenhofer.

So this looks like two rivaling research communities

     "Topological Relations" vs. RCC8

working on the same topic, and I am sure they know from each other. Received on Fri Dec 11 2015 - 10:20:00 CET