Scaling in Words on Twitter

no code implementations • 11 Mar 2019 • Eszter Bokányi, Dániel Kondor, Gábor Vattay

Scaling properties of language are a useful tool for understanding generative processes in texts.

Efficient classification of billions of points into complex geographic regions using hierarchical triangular mesh

1 code implementation • 2 Oct 2014 • Dániel Kondor, László Dobos, István Csabai, András Bodor, Gábor Vattay, Tamás Budavári, Alexander S. Szalay

We present a case study about the spatial indexing and regional classification of billions of geographic coordinates from geo-tagged social network data using Hierarchical Triangular Mesh (HTM) implemented for Microsoft SQL Server.

Databases

Using Robust PCA to estimate regional characteristics of language use from geo-tagged Twitter messages

no code implementations • 5 Nov 2013 • Dániel Kondor, István Csabai, László Dobos, János Szüle, Norbert Barankai, Tamás Hanyecz, Tamás Sebők, Zsófia Kallus, Gábor Vattay

Principal component analysis (PCA) and related techniques have been successfully employed in natural language processing.