Saturday, March 28, 2009

What's in a name?



Sometimes it is semantic relations ingrained!

I could not resist my temptation to read through the entire wikipedia article when I saw this interesting picture while refining Myrtaceae terms. It is the fruit of Jabuticaba, also called Brazilian Grape Tree. The name is derived from the Tupi word Jabuti (tortoise) + Caba (place), meaning the place where you find tortoises. Aspects of biodiversity and ecological interdependency are brought out in these names in indigenous communities. Even scientific names are suggestive of the main feature of the organism. Myrciaria cauliflora aptly represents the fact that its flowers grow directly from its trunk.

Wednesday, March 25, 2009

Bharati Joins AGROVOC Team

Bharati joined as Senior Research Fellow, Knowledge Management & Sharing Division of ICRISAT. She is a post graduate in Agricultural Biotechnology from University of Agricultural Sciences, Dharwad. She is currently working on AGROVOC and will be refining the RT relationships. Together Lavanya and Bharati are reviewing the hierarchies under each top term to see if they need to be revised further.

Tuesday, March 17, 2009

Land mobility

As a rule we are only revising and re-arranging the existing AGROVOC terms and NOT adding new terms at this stage. But during the revision of existing terms, we ARE elevating some concepts from being non-descriptors to Descriptors in their own right. Land mobility is one such concept.

“Land mobility” is the movement of land parcels between farmers through sales or exchange. - (FAO Land Tenure Training Materials on Land Consolidation Pilot Projects)

This concept is gaining importance in the wake of urban-rural migration, expansion/encroachment of urban structures (roads and buildings) into rural areas, political promises and women asserting their property rights.

Poly-hierarchies and the two proposals

Poli-hierarchies: yes, it may create confusions and mix concepts
(organisms, such as "Apis mellifera capensis" over categories such as "Queen
bees")... but unfortunately this is what we would end up to have (and is fine
for now). The tools should takes care to visualize or not all the common
names or scientific names or exclude part of them.

After a deeper analysis i found that in your picture we may have problems in
agrovoc or in the concept server as we are planning. Therefore I am proposing
2 possible solutions:

3a) mix the hierarchies in order to have a unique hierarchy.

3b) keep hierarchies separated, in this case just relate concepts that may
belongs to the 2 hierarchies by RT (refined appropriately).

Personally I like better case 3b, which is similar to consider the
potato-plant organism different from the potato-fruit organism.... so
consider the 'bee' organisms related the the 'bees' as a specific category of
insects. I like very much this idea. - Ms. Sini Margherita

Even the other team members voted for option 3b.

Some thoughts on Polyhierarchies

Although the use of poly hierarchies is convincing in theory, in practice it
is likely to create some confusion.

Instead we prefer to have common terms as one hierarchy with organisms as Top
term and taxonomic terms as another hierarchy with some other top term, say
taxonomic terms.

It will be a `ladder' structure with the rungs formed by the `sameAs'
relations. It is almost similar to the original guidelines, but for that now
MORE (two) descriptors are allowed for the same concept.

(Note: common terms hierarchy may not exactly be parallel to the taxonomic
one. There could be some gaps, as in the case of sub order, and sub genus
levels, in which case the sameAs relation doesn't exist)

This seems to be alright from the thesaurus point of view, but we are not
sure how it fits into the concept server and work bench contexts,
particularly when we want to expand the search for all the stem borers.

To achieve this, should we necessarily have all kinds of stem borers as NTs
under stemborers? When they are in different hierarchies also, they can be
brought together by RT relation. If RT relation is not amenable for handling
in the concept server, should we devise any other new relation, say SC (Same
Concept) or ST Same term?

Since at present all the common names and taxonomic names are mixed up, we
would first add and/or link common names to existing taxonomic names, and
taxotomic names to existing common names.

Catching up with running time!


With the approaching deadlines, AGROVOC team was away from this blog for a while, taking stock of the situation and working on ways to take this mammoth task to completion. With more team members on board now, the revision and refinement process has gained momentum and heading towards the finish line.