Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: IACTalks: an on-line archive of astronomy-related seminars   We present IACTalks, a free and open access seminars archive
(http://iactalks.iac.es) aimed at promoting astronomy and the exchange of ideas
by providing high-quality scientific seminars to the astronomical community.
The archive of seminars and talks given at the Instituto de Astrofi\'isica de
Canarias goes back to 2008. Over 360 talks and seminars are now freely
available by streaming over the internet. We describe the user interface, which
includes two video streams, one showing the speaker, the other the
presentation. A search function is available, and seminars are indexed by
keywords and in some cases by series, such as special training courses or the
2011 Winter School of Astrophysics, on secular evolution of galaxies. The
archive is made available as an open resource, to be used by scientists and the
public.

23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org