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perezmv

http://oreilly.com/digitalmedia/2006/08/17/inside-pandora-web-radio.html - 0 views

oreilly.com/...inside-pandora-web-radio.html

Pandora howstuffworks music musical technology symbiosis format business model records experiments attributes project company analysts dimensions

shared by perezmv on 06 Jul 14 - No Cached
  • Pandora (which is also the name of the company) grew out of the Music Genome Project, which company founder Tim Westergren began six years ago.
  • He became fascinated with the way directors described the music they were looking for, which led to his wondering what made people enjoy certain types of music. He asked himself, "If people haven't found any music that they love since college, and artists are struggling to find an audience, is there a role for technology to help bridge the gap?"
  • Westergren started the Genome Project from the idea of creating a platform for connecting people with music that they'll love based on music they already enjoy. The project uses experts called "music analysts" to deconstruct music into its fundamental parts and capture the results into a database. Pandora has 40 professional musicians who come to the office every day and listen to one song at a time, analyzing each in anywhere from 200 to 400 dimensions. (The dimensions are somewhat different for each genre of music.)
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  • Pandora chose the dimensions because they are quantitative. For instance, how breathy are the vocals? Is the music diatonic or chromatic? The music analysts are trained to be able to score songs consistently. In fact, one of the test cases is, "Could a group of 10 musicologists listen to a song and agree on one score for a particular element?"
  • vector space.
  • "What is exciting about the Music Genome Project, with respect to Pandora the radio-listening experience, is that by understanding the music on a song-by-song basis we can put together a playlist that has a much more natural ebb and flow than you might be able to do with collaborative filtering data," Conrad says.
  • "I think curator is the right word," Conrad replied. "Of all the financial models that could be leveraged to make Pandora a successful business, the 'play for pay' model runs completely spiritually opposite to the founding of the company.
  • I asked what Pandora was doing to avoid being influenced by big record labels, which have been widely accused of corrupting traditional radio through payola schemes.
  • "Since we use a human analyst to analyze song by song, we've experimented with using a smaller number of elements," he continued. "We've determined that you can't create interesting playlists with only 20 attributes. But we do keep an eye on machine listening as it might provide a way to augment the manual analysis."
  • I ask myself, "What's this song doing in my Bill Evans station? This song should be in my 'Soft Jazz Guitar' station. Why can't I tell Pandora to place this tune in the appropriate station?"
  • "It's fascinating to me that you raise that particular example," Conrad said. "Because the scenario that you just described is--after we evolved the product over five months and took a lot of low-hanging fruit off the table--probably the number-one listener request.
  • Pandora creates playlists with a "matching engine," written in C and Python, for each listener station. This engine builds the low-level linkage to the "source" music (the music that listeners indicate they like) and the music that actually gets played (a mixture of what the listener explicitly indicated, mixed with music that the Pandora service believes listeners will like). The replication system is Slony.
anonymous

A psychological perspective on augmented reality in the mathematics classroom - 0 views

www.sciencedirect.com/...S0360131513000560

#ThoughtVectors technology media education augmented reality classroom

shared by anonymous on 09 Jul 14 - No Cached
  • The paper presents a framework for understanding AR learning from three perspectives: physical, cognitive, and contextual. On the physical dimension, we argue that physical manipulation affords natural interactions, thus encouraging the creation of embodied representations for educational concepts. On the cognitive dimension, we discuss how spatiotemporal alignment of information through AR experiences can aid student's symbolic understanding by scaffolding the progression of learning, resulting in improved understanding of abstract concepts. Finally, on the contextual dimension, we argue that AR creates possibilities for collaborative learning around virtual content and in non-traditional environments, ultimately facilitating personally meaningful experiences.
anonymous

Creating Time: students, technologies and temporal practices in higher education - E-Le... - 1 views

www.wwwords.co.uk/...abstract.asp

#ThoughtVectors technology college students ethnography research creating time digital media higher education

shared by anonymous on 04 Jul 14 - No Cached
  • The data suggest that for these students the dimension of time is in complex, dynamic and contingent interplay with a range of networked devices and shifting material domains and practices, which are mobilised for textual engagement and production. It will argue that student entanglements with devices and digitally mediated texts serve to pause, distribute, elongate and render simultaneous the temporal nature of their practices in emergent 'temporal practices' in complex relationships of co-agency with devices and technologies. It will conclude that a typological analysis is inadequate to understanding these complex, emergent engagements.
  • anonymous on 04 Jul 14
     
    "Creating Time: students, technologies and temporal practices in higher education LESLEY GOURLAY, Department of Culture, Communication and Media, Institute of Education, University of London, United Kingdom pages 141-153 http://dx.doi.org/10.2304/elea.2014.11.2.141"
Will Sullivan

Barcode - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Barcode

augmentedreality visualculture

shared by Will Sullivan on 27 Jun 14 - No Cached
  • A barcode is an optical machine-readable representation of data relating to the object to which it is attached. Originally barcodes systematically represented data by varying the widths and spacings of parallel lines, and may be referred to as linear or one-dimensional (1D). Later they evolved into rectangles, dots, hexagons and other geometric patterns in two dimensions (2D). Although 2D systems use a variety of symbols, they are generally referred to as barcodes as well. Barcodes originally were scanned by special optical scanners called barcode readers. Later, scanners and interpretive software became available on devices including desktop printers and smartphones.
  • Will Sullivan on 27 Jun 14
     
    Barcodes are symbols just like any other, but they can only be read by computers! They're kind of like paintings for computers.
symone008

http://www.surveillance-and-society.org/articles4(3)/escalating.pdf - 0 views

www.surveillance-and-society.org/...escalating.pdf

government privacy qualityoflife #ThoughtVectors #tv008 internet

shared by symone008 on 02 Jul 14 - No Cached
    • symone008
      symone008 on 02 Jul 14
       
      Abstract- What legal and criminal events have facilitated a reevaluation of the balance privacy & security? Find examples Historically Police Strategies involve high surveillance and less privacy Preventive law enforcement has caused a new civil privacy paradigm. How does this affect us? Whitaker (2003: 52) claims that "the historical cycle in which violent threats generate the expansion of arbitrary and intrusive powers of government is being repeated. Once again, the constitutional protection of rights is being dismissed, sometimes from the highest offices in the land, as an inconvenient impediment to safety."  - police use crime control/drugs/terrorism to justify expanding their powers  Balancing of Competing Interest Standard- test devised to weigh the permissibility of police surveillance and search powers in relation to privacy Patriots Act ECPA- police may intercept electronic communications, without a warrant or court order CALEA- internet service provider easy access to law enforcement Effects of Increased Police Surveillance on civic life - diminution of privacy rights - Alien conspiracy - Public anxiety  - Public disruption- impediment to free movement - demise of fundamental democratic ideals -- Orwellian surveillance  there is an absence of  understanding, among researchers, about the scope of police surveillance effects on this  dimension of public existence - assess the social and psychological impact of the US police surveillance on civil life? How can we maintain the balance of security and privacy? Withnot being ill-equipped or not deminishing the quality of the US life. 
  • symone008 on 02 Jul 14
     
    Great article of the impact of US police surveillance on civil life.
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