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| - | ====== 1211. sredin seminar, 16. maj 2012 ====== | + | ====== 1213. sredin seminar, 13. junij 2012 ====== |
| - | Vladimir Batagelj <vladimir.batagelj@fmf.uni-lj.si> | + | Klemen Simonič <klemen.simonic@ijs.si> |
| - | **Bibliometrična omrežja** | + | **Linked data: Predicting missing properties** |
| + | The volume of available structured data is increasing, particularly | ||
| + | in the form of Linked Data, where relationships between individual | ||
| + | pieces of data are encoded by a graph-like structure. The structure | ||
| + | is a multigraph where: concepts define nodes and properties and | ||
| + | relationships are represented by edges. Despite increasing scales | ||
| + | of the data, the use and applicability of these resources is | ||
| + | currently limited by mistakes and omissions in the linking data. | ||
| - | Na seminarju bom predstavil nekaj novih zamisli pri analizi | + | In this talk, we look at the missing property recommendation |
| - | bibliometričnih omrežij. | + | problem. Given a specific query node in our multigraph dataset, |
| - | + | can we correctly rank possibly omitted properties by likelihood. | |
| - | Najprej si bomo ogledali omrežja sodelovanj. Z Moniko Cerinšek sva | + | We propose a general method based on leveraging properties from |
| - | v analizi omrežja Zentralblatt vpeljala indeks sodelovalnosti | + | similar nodes in our dataset. To determine the likelihood, we use |
| - | posameznega avtorja pri predpostavki, da vsi soavtorji prispevajo | + | weighted averages of property counts to determine the most likely |
| - | enak delež k posameznemu delu. Na seminarju bom predstavil posplošitev | + | missing property. To determine similar nodes, we use a variety of |
| - | in matematično ozadje pristopa za primer, ko so ti deleži lahko tudi | + | local, global and external measures of similarity. Finally, we |
| - | različni. | + | present a comprehensive evaluation of the performance of our |
| - | + | approach for a number of different averaging schemes and similarity | |
| - | V drugem delu si bomo ogledali odpravljanje ciklov v omrežjih | + | measures on three very large-scale datasets, two based on DBpedia |
| - | sklicevanj z uporabo transformacije "preprint". Pri tej potrebujemo | + | and one based on Freebase. |
| - | sezname vseh poti med pari točk. Predstavil bom preprost polkolobar, | + | |
| - | ki omogoča njih izračun. | + | |
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