[Wiki-research-l] Re: The June 2024 issue of the Wikimedia Research Newsletter is out

2024-07-13 Thread Tilman Bayer
On Thu, Jul 11, 2024 at 11:09 AM J. Nathan Matias wrote: > Thanks for sharing, and many thanks to Tilman Bayer for assembling this > summary. > Thanks Nathan! > > I'm really intrigued by this study about differences in sentiment and > language, especially because wo

[Wiki-research-l] Re: What's your favorite text about general research frameworks?

2022-02-06 Thread Tilman Bayer
Also consider the widely used textbook by Creswell & Creswell, "Research Design: Qualitative, Quantitative, and Mixed Methods Approaches" (5th Edition, ISBN 978-1506386706), as a general reference for the social sciences with relevance to much of the research literature about Wikipedia. It's prett

Re: [Wiki-research-l] Asperges, ADHD and editors

2020-04-08 Thread Tilman Bayer
The results of that Amichai-Hamburger et al. study were later questioned, see https://meta.wikimedia.org/wiki/Research:Newsletter/2013/March#Grumpiness_due_to_a_%22serious_typographical_error%22 Here is another one that studied Big Five personality traits: https://meta.wikimedia.org/wiki/Research:

Re: [Wiki-research-l] Statistics on reverted edits

2020-01-31 Thread Tilman Bayer
Concerning 1) and about analyzing reverts in general, see https://meta.wikimedia.org/wiki/Research:Revert . To explore 5), https://meta.wikimedia.org/wiki/AbuseFilter and https://tools.wmflabs.org/ptwikis/Filters:enwiki may be of interest. Regards, HaeB On Wed, Jan 29, 2020 at 12:01 PM Su-Laine

Re: [Wiki-research-l] [Wikimedia-l] Remember Wikipedia Zero.. Where is the research about the effects of its demise?

2019-12-08 Thread Tilman Bayer
It's a reasonable question, for which the Wiki-research-l mailing list (CCed) might be a better venue. There is some data at https://commons.wikimedia.org/wiki/File:Wikimedia_Foundation_Audiences_Metrics_%26_Insights_Q1_2018-19.pdf (not a full analysis, highlighting just two example countries) Re

Re: [Wiki-research-l] [Wikimedia-l] Page views of male/female biographies?

2018-12-03 Thread Tilman Bayer
at: > https://meta.wikimedia.org/wiki/Mailing_lists/Guidelines and > https://meta.wikimedia.org/wiki/Wikimedia-l > New messages to: wikimedi...@lists.wikimedia.org > Unsubscribe: https://lists.wikimedia.org/mailman/listinfo/wikimedia-l, > <mailto:wikimedia-l-requ...@lists.wikimedia.org?

Re: [Wiki-research-l] [Analytics] Beeline as Hive client

2018-10-02 Thread Tilman Bayer
it. The hive client still has significantly better error reporting and a few other advantages." On Thu, Apr 21, 2016 at 5:06 PM, Tilman Bayer wrote: > Thanks for making it easier to use Beeline and for setting up the > documentation! Curious and excited about stat1004 ;) >

Re: [Wiki-research-l] Upcoming Research Newsletter: New Papers Open For Review

2018-09-22 Thread Tilman Bayer
>States during the 2016 Zika epidemic >- University Students in the Educational Field and Wikipedia Vandalism >- What is the Commons Worth? Estimating the Value of Wikimedia Imagery >by Observing Downstream Use > > > Masssly, Tilman Bayer and Dario Taraborelli >

Re: [Wiki-research-l] where did I read about predicting user conflicts?

2018-09-17 Thread Tilman Bayer
__ > Wiki-research-l mailing list > Wiki-research-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wiki-research-l > -- Tilman Bayer Senior Analyst Wikimedia Foundation IRC (Freenode): HaeB ___ Wiki-research-l mailing list Wiki-research-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wiki-research-l

Re: [Wiki-research-l] "State of Wikimedia Research" presentation at Wikimania 2018

2018-07-27 Thread Tilman Bayer
imedia.org > https://lists.wikimedia.org/mailman/listinfo/wiki-research-l > -- Tilman Bayer Senior Analyst Wikimedia Foundation IRC (Freenode): HaeB ___ Wiki-research-l mailing list Wiki-research-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wiki-research-l

[Wiki-research-l] Upcoming research newsletter: new papers open for review

2018-01-21 Thread Tilman Bayer
Digital Cultural Heritage by Wikipedians • What Makes Wikipedia's Volunteer Editors Volunteer? • Wikipedia-integrated publishing: a comparison of successful models If you have any question about the format or process feel free to get in touch off-list. Masssly, Tilman Bayer and Dario

Re: [Wiki-research-l] stat1002 and stat1003 deprecated. Please use new stat boxes

2017-07-19 Thread Tilman Bayer
please be careful. If you are running long jobs > that generate temporary data, please have those jobs write into your home > directory, rather than /tmp. > - We might implement user home directory quotas in the future. > > Thanks all! I’ll send another email in about a months time

Re: [Wiki-research-l] [Analytics] Kaggle competition to forecast Wikipedia article traffic

2017-07-18 Thread Tilman Bayer
ailing list > analyt...@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/analytics > > -- Tilman Bayer Senior Analyst Wikimedia Foundation IRC (Freenode): HaeB ___ Wiki-research-l mailing list Wiki-research-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wiki-research-l

[Wiki-research-l] Fwd: [Wikimedia-l] Wikimedia and other 60+ organizations launch the Initiative for Open Citations (I4OC)

2017-04-06 Thread Tilman Bayer
ines at: https://meta.wikimedia.org/ wiki/Mailing_lists/Guidelines and https://meta.wikimedia.org/ wiki/Wikimedia-l New messages to: wikimedi...@lists.wikimedia.org Unsubscribe: https://lists.wikimedia.org/mailman/listinfo/wikimedia-l, <mailto:wikimedia-l-requ...@lists.wikimedia.org?subject=uns

Re: [Wiki-research-l] [Wikimedia-l] Termodynamics and social capital

2017-03-19 Thread Tilman Bayer
..@lists.wikimedia.org > Unsubscribe: https://lists.wikimedia.org/mailman/listinfo/wikimedia-l, > <mailto:wikimedia-l-requ...@lists.wikimedia.org?subject=unsubscribe> -- Tilman Bayer Senior Analyst Wikimedia Foundation IRC (Freenode): HaeB _

Re: [Wiki-research-l] Request: Studies of external impacts of Wikipedia

2017-01-26 Thread Tilman Bayer
___ > Wiki-research-l mailing list > Wiki-research-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wiki-research-l > > -- Tilman Bayer Senior Analyst Wikimedia Foundation IRC (Freenode): HaeB _

Re: [Wiki-research-l] Chapters

2017-01-10 Thread Tilman Bayer
ank you! :) > > Aisha > > ___ > Wiki-research-l mailing list > Wiki-research-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wiki-research-l > > -- Tilman Bayer Senior Analyst Wikimedia Foundation IRC (Freenode): HaeB

Re: [Wiki-research-l] [Analytics] Question about data mining of the "Articles for Deletion" queues

2016-11-22 Thread Tilman Bayer
MF) <https://meta.wikimedia.org/wiki/User:Jmorgan_(WMF)> > > > ___ > Analytics mailing list > analyt...@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/analytics > > -- Tilman Bayer Senior Analyst Wikimedia Foundation IRC (Freenode): HaeB ___ Wiki-research-l mailing list Wiki-research-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wiki-research-l

Re: [Wiki-research-l] Make Software: Change the world

2016-11-10 Thread Tilman Bayer
PS, the meetup page about that 2012 session with some more information: https://en.wikipedia.org/wiki/Wikipedia:Meetup/Computer_History_Museum On Thu, Nov 10, 2016 at 1:57 AM, Tilman Bayer wrote: > Hi Alexandre, > > yes, Andrew Lih (CCed) worked with them on this, and preparations >

Re: [Wiki-research-l] Make Software: Change the world

2016-11-10 Thread Tilman Bayer
t; ___ > Wiki-research-l mailing list > Wiki-research-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wiki-research-l -- Tilman Bayer Senior Analyst Wikimedia Foundation IRC (Freenode): HaeB

Re: [Wiki-research-l] Wikipedia video stats ?

2016-11-03 Thread Tilman Bayer
nce > Trilce > > -- > :..::...::..::...::..: > Trilce Navarrete > > m: +31 (0)6 244 84998 | s: trilcen | t: @trilcenavarrete > w: trilcenavarrete.com > > ___ > Wiki-research-l mailing list > Wiki-research-l@lists.wikime

Re: [Wiki-research-l] Research on automatically created articles

2016-09-13 Thread Tilman Bayer
___ >>> Wiki-research-l mailing list >>> Wiki-research-l@lists.wikimedia.org >>> https://lists.wikimedia.org/mailman/listinfo/wiki-research-l >>> >> >> >> >> -- >> Samuel Klein @metasj w:user:sj +1 617 529 4266 >>

Re: [Wiki-research-l] Research or other documentation on potential GLAM partner issues

2016-09-07 Thread Tilman Bayer
> Wiki-research-l mailing list > Wiki-research-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wiki-research-l > > -- Tilman Bayer Senior Analyst Wikimedia Foundation IRC (Freenode): HaeB ___ Wiki-research-l mailing list

Re: [Wiki-research-l] Looking for Wikipedia search queries

2016-08-17 Thread Tilman Bayer
anks for your help! > Felix Engelmann > ___ > Wiki-research-l mailing list > Wiki-research-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wiki-research-l -- Tilman Bayer Senior Analyst

Re: [Wiki-research-l] [Analytics] Beeline as Hive client

2016-04-21 Thread Tilman Bayer
--Madhu :) > > ___ > Analytics mailing list > analyt...@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/analytics > -- Tilman Bayer Senior Analyst Wikimedia Foundation IRC (Freenode): HaeB __

Re: [Wiki-research-l] [Wikimedia-l] Gender gap on "classical" encyclopedias

2016-04-20 Thread Tilman Bayer
i/Research:Newsletter/2015/May#Notable_women_.22slightly_overrepresented.22_.28not_underrepresented.29_on_Wikipedia.2C_but_the_Smurfette_principle_still_holds Comparison of Wikipedia with, among other sources, "Human Accomplishment", a 2003 "ranking of geniuses throughout the ages and around the wor

Re: [Wiki-research-l] Fwd: [Wikitech-l] statistics about frequent section titles

2016-03-02 Thread Tilman Bayer
gt;>>> ___ >>>>> Wikitech-l mailing list >>>>> wikitec...@lists.wikimedia.org >>>>> https://lists.wikimedia.org/mailman/listinfo/wikitech-l >>>>> >>>>> >>>>> >&

Re: [Wiki-research-l] Study on how multilingual Wikipedia is used on Twitter

2016-01-09 Thread Tilman Bayer
ge links on Twitter, to > Wikipedia: > http://www.slideshare.net/evazangerle/analysing-the-usage-of-wikipedia-on-twitter-understanding-interlanguage-links > > Cheers, > > Alex -- Tilman Bayer Senior Analyst Wikimedia Foundation IRC (Freenode): HaeB __

Re: [Wiki-research-l] Upcoming research newsletter (December 2015): new papers open for review

2016-01-02 Thread Tilman Bayer
lls of Big Data > Wikipedia: The difference between information acquisition and learning > knowledge > Wikis and Collaborative Systems for Large Formal Mathematics > > > If you have any question about the format or process feel free to get in >

Re: [Wiki-research-l] Data on editathons held in each Wikipedia Language?

2015-12-10 Thread Tilman Bayer
a similar but untreated language, > for each "treated group". > > > Make a great day, > Max Klein ‽ http://notconfusing.com/ > > ___ > Wiki-research-l mailing list > Wiki-research-l@lists.wikimedia.org > htt

Re: [Wiki-research-l] Research-related activities at Wikimania 2016

2015-11-28 Thread Tilman Bayer
would be most welcome. > > Thanks and cheers, > > Daniel > > ___ > Wiki-research-l mailing list > Wiki-research-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wiki-research-l -- Tilman Bayer Senior Analyst Wikimedia Foundation I

Re: [Wiki-research-l] [Analytics] Does StackExchange have more monthly active users than Wikipedia?

2015-11-13 Thread Tilman Bayer
...@lists.wikimedia.org >> https://lists.wikimedia.org/mailman/listinfo/analytics > > > > > -- > Jonathan T. Morgan > Senior Design Researcher > Wikimedia Foundation > User:Jmorgan (WMF) > > > ___ > Analyti

Re: [Wiki-research-l] mobile pageviews

2015-09-28 Thread Tilman Bayer
o/wiki-research-l > > > > > -- > Jonathan T. Morgan > Senior Design Researcher > Wikimedia Foundation > User:Jmorgan (WMF) > > > ___ > Wiki-research-l mailing list > Wiki-research-l@lists.wikimedia.org >

Re: [Wiki-research-l] analyzing 50 billion Wikipedia pageviews in 5 seconds (w/BigQuery)

2015-07-16 Thread Tilman Bayer
of categories.) I understand Felipe has already been talking to the WMF Analytics team, who are making major progress on https://phabricator.wikimedia.org/T44259 currently. On Thu, Jul 16, 2015 at 11:32 AM, Felipe Hoffa wrote: > Hi! I'm currently attending Wikimania (I have a session on

Re: [Wiki-research-l] a cautious note on gender stats Re: Fwd: [Gendergap] Wikipedia readers

2015-03-05 Thread Tilman Bayer
to be comfortable with stating their gender in public, and in several languages <https://en.wikipedia.org/wiki/Gender_neutrality_in_languages_with_grammatical_gender> female users have to set that user preference if they want the word "user" next to their nick show up in female instead

Re: [Wiki-research-l] this month's research newsletter

2014-07-29 Thread Tilman Bayer
>>>>> has had. >>>>> >>>>> -Aaron >>>>> >>>>> >>>>> On Wed, Jul 2, 2014 at 7:05 AM, Heather Ford wrote: >>>>>> >>>>>> Apologies. You're right, Han-Teng. The reviewer looks to

Re: [Wiki-research-l] this month's research newsletter

2014-07-29 Thread Tilman Bayer
etter >>>> >>>> ... But perhaps it would be useful to have a pre-release version of >>>> the mailing list, that would send it out a day or two in advance of >>>> the "official" release to persons who might be interested to help >>>> ed

[Wiki-research-l] The Wikimedia Research Newsletter 4(3) is out

2014-04-01 Thread Tilman Bayer
nks to Federico Leva, Scott Hale, Kim Osman, Jonathan Morgan, Piotr Konieczny, Niklas Laxström and James Heilman for contributing. Tilman Bayer and Dario Taraborelli -- Wikimedia Research Newsletter https://meta.wikimedia.org/wiki/Research:Newsletter/ * Follow us on Twitter: @WikiResearch * Receive

Re: [Wiki-research-l] published articles about Wikipedia translation

2014-03-19 Thread Tilman Bayer
ress.com > ‪“We're living in pieces, > I want to live in peace.” – T. Moore‬ > > ___ > Wiki-research-l mailing list > Wiki-research-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wiki-research-l > -- T

Re: [Wiki-research-l] Upcoming research newsletter: new papers open for review

2014-02-25 Thread Tilman Bayer
glish? > > Juliana. > > > On Tue, Feb 25, 2014 at 2:16 PM, Tilman Bayer wrote: >> >> Hi Heather, >> >> that's a cool idea, and we have actually been considering something >> like this already. While the names of the reviewers are prominently >&g

Re: [Wiki-research-l] Upcoming research newsletter: new papers open for review

2014-02-25 Thread Tilman Bayer
thnography Group > http://hblog.org | @hfordsa > > > > > On 25 February 2014 05:26, Tilman Bayer wrote: >> >> Hi Max, >> >> yes, we're co-publishing with the Signpost, so the ultimate deadline >> is the Signpost's actual publication time.

Re: [Wiki-research-l] Upcoming research newsletter: new papers open for review

2014-02-24 Thread Tilman Bayer
short > notes and one-paragraph reviews are most welcome. > > Instead of contacting past contributors only, this month we're experimenting > with a public call for reviews cross-posted to analytics-l and > wiki-research-l. if you have any question about the format or process fee

Re: [Wiki-research-l] Fwd: Upcoming talk at the Berkman Center on the gender gap and Internet use skills

2014-01-17 Thread Tilman Bayer
lled women do not > contribute at comparable rates to highly-skilled men. > > > > > > _______ > Wiki-research-l mailing list > Wiki-research-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wiki-research-l >

[Wiki-research-l] The Wikimedia Research Newsletter 3(12) is out

2013-12-30 Thread Tilman Bayer
ein and Piotr Konieczny for contributing. Tilman Bayer and Dario Taraborelli -- Wikimedia Research Newsletter https://meta.wikimedia.org/wiki/Research:Newsletter/ * Follow us on Twitter/Identi.ca: @WikiResearch * Receive this newsletter by mail: https://lists.wikimedia.org/mailman/listinfo/researc

Re: [Wiki-research-l] Counting contributions for review/tenure

2013-07-23 Thread Tilman Bayer
ling list > Wiki-research-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wiki-research-l > -- Tilman Bayer Senior Operations Analyst (Movement Communications) Wikimedia Foundation IRC (Freenode): HaeB ___ Wiki-research-l mailing list Wiki-research-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wiki-research-l

[Wiki-research-l] RIP John Riedl (1962-2013)

2013-07-18 Thread Tilman Bayer
/ -- Tilman Bayer Senior Operations Analyst (Movement Communications) Wikimedia Foundation IRC (Freenode): HaeB ___ Wiki-research-l mailing list Wiki-research-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wiki-research-l

Re: [Wiki-research-l] The Wikimedia Research Newsletter 3(6) is out

2013-06-30 Thread Tilman Bayer
Thanks, it works now. On Sun, Jun 30, 2013 at 6:48 PM, Stuart A. Yeates wrote: > The link https://meta.wikimedia.org/wiki/Research:Newsletter/ in your > signature doesn't work. > > cheers > stuart > > > > On Sat, Jun 29, 2013 at 6:42 AM, Tilman Bayer wrote:

[Wiki-research-l] The Wikimedia Research Newsletter 3(6) is out

2013-06-28 Thread Tilman Bayer
analysis 3 Adjusting automatic quality flaw predictors by topic areas 4 Briefly 5 References ••• 9 publications were covered in this issue ••• Thanks to Giovanni Luca Ciampaglia and Taha Yasseri for contributing Tilman Bayer and Dario Taraborelli -- Wikimedia Research Newsletter https://meta.wik

Re: [Wiki-research-l] Modeling Wikipedia admin elections using multidimensional behavioral social networks

2013-02-18 Thread Tilman Bayer
-- > Everton Zanella Alvarenga (also Tom) > "A life spent making mistakes is not only more honorable, but more > useful than a life spent doing nothing." > > _______ > Wiki-research-l mailing list > Wiki-research-l@lists.wikimedi

Re: [Wiki-research-l] 2012 top pageview list

2012-12-28 Thread Tilman Bayer
gt;> >> > >> > Number 1 in Dutch is a Chinese mountain. The stats for December >> disagree >> > http://stats.grok.se/nl/201212/Hua_Shan >> >> July/August agree: http://stats.grok.se/nl/201208/Hua_Shan >> >> >> > >> > Num

Re: [Wiki-research-l] # of searches where WP is the first hit?

2012-11-19 Thread Tilman Bayer
ion%3Anone> > > See also: http://dontbubble.us/ > > > /Finn > > > __**_ > Wiki-research-l mailing list > Wiki-research-l@lists.**wikimedia.org > https://lists.wikimedia.org/**mailman/listinfo/wiki-**research-l<https://lists.wikime

Re: [Wiki-research-l] Wikipedia pages revisions and incremental dumps

2012-11-09 Thread Tilman Bayer
; > > > /Finn > > > __**_ > Wiki-research-l mailing list > Wiki-research-l@lists.**wikimedia.org > https://lists.wikimedia.org/**mailman/listinfo/wiki-**research-l<https://lists.wikimedia.org/mailman/listinfo/wiki-research-l> > --

Re: [Wiki-research-l] [Wikimedia-l] 2012 Editor survey launched

2012-11-02 Thread Tilman Bayer
cussions about the survey on mailing lists and on Meta before it has completed, but this is a price we are happy to pay to involve the community and achieve transparence. > > John Vandenberg. > sent from Galaxy Note > On Oct 31, 2012 7:26 AM, "Tilman Bayer" wrote: > >

Re: [Wiki-research-l] Social Network Analysis of Wikipedia

2012-09-05 Thread Tilman Bayer
> > Very many thanks, > Jeremy Foote > > ___ > Wiki-research-l mailing list > Wiki-research-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wiki-research-l > -- Tilman Bayer Senior Operations Analyst (Move

Re: [Wiki-research-l] More accurate revert detection in Wikipedia, alternative to MD5 identical revision method

2012-06-27 Thread Tilman Bayer
128 Karlsruhe > > Phone: +49 721 608 4 6584 > Skype: f.floeck_work > E-Mail: fabian.flo...@kit.edu > WWW: http://www.aifb.kit.edu/web/Fabian_Flöck > > KIT – University of the State of Baden-Wuerttemberg and > National Research Center of the Helmholtz Association > > >

[Wiki-research-l] The Wikimedia Research Newsletter 2(6) is out

2012-06-26 Thread Tilman Bayer
p://blog.wikimedia.org/?p=10655 Tilman Bayer and Dario Taraborelli -- Tilman Bayer Senior Operations Analyst (Movement Communications) Wikimedia Foundation IRC (Freenode): HaeB ___ Wiki-research-l mailing list Wiki-research-l@lists.wikimedia.org https://li

[Wiki-research-l] The Wikimedia Research Newsletter 2(5) is out

2012-05-30 Thread Tilman Bayer
earch-newsletter * Subscribe to the RSS feed: https://blog.wikimedia.org/c/research-2/wikimedia-research-newsletter/feed/ * Download the full 45-page PDF of Volume 1 (2011) and a dataset of all references covered in it: http://blog.wikimedia.org/?p=10655 Tilman Bayer and Dario Taraborelli -- Tilman

[Wiki-research-l] The Wikimedia Research Newsletter 2(1) - Jan 2012 is out

2012-01-31 Thread Tilman Bayer
or by mail at researchn...@wikimedia.org RSS feed for the newsletter: https://blog.wikimedia.org/c/research-2/wikimedia-research-newsletter/feed/ Regards, Tilman -- Tilman Bayer Movement Communications Wikimedia Foundation ___ Wiki-research-l mailing

Re: [Wiki-research-l] Creation of Wikipedia Pedagogy Listserv

2012-01-27 Thread Tilman Bayer
56/lazy-virtues > Wiki Writing: http://www.digitalculture.org/books/wiki-writing > COLT: http://colt.olemiss.edu/ > > ___ > Wiki-research-l mailing list > Wiki-research-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/w

Re: [Wiki-research-l] Fraction of reverts

2011-08-15 Thread Tilman Bayer
I think Ed Chi's group at PARC did some the earliest studies about revert rates: http://asc-parc.blogspot.com/2009/08/part-2-more-details-of-changing-editor.html "Monthly ratio of reverted edits by editor class" http://asc-parc.blogspot.com/2009/07/part-1-slowing-growth-of-wikipedia-some.html http