from power chords to the power of models
TRANSCRIPT
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From Power Chords
to the Power of
Models
@aliostadAli Kheyrollahi
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8
Local pop music ?
9
Local pop music “Cheelee pom!”
10
Boney M “Rasputin”
11
Blondie “Heart of Glass”
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Short Wave Radio (SW2)
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Data Acquisition
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Data Source - Wiki
4,990,2794,990,279 English Articles
37,583,879 Articles
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Data Source - What about …
2012
http://money.cnn.com/2012/03/13/technology/encyclopedia-britannica-books/
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Data Source - Wiki vs BritannicaFeng Zhu (assistant prof at Harvard):
There has been lots of research on the accuracy of Wikipedia, and the results are mixed—some studies show it is just as good as the experts, others show [that] Wikipedia is not accurate at all.
… the editors [of Britannica] are still not found to be more objective than the crowd in articles that are sufficiently revised.
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Data Source - Wikipedia in scholar papers
0
45000
90000
135000
180000
2005 2006 2007 2008 2009 2010 2011 2012 2013 2014Source: Google Scholar
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Data Source - Dark side of Wiki The Doggs: A mid-1960s British rock band, noted for barking while playing music
Lord Byron kept a crocodile and a honey badger as a pet
Ted and the Treble Tones, a rock band from Fresno with a 1959 hit single that appeared nowhere on the Billboard charts
The Shaggs all female (sister) band Hacked-at drumbeats, whacked-around chords, songs that seem to have little or no meter to them… Zappa’s favourite…
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Data Source - Content vs. Data
… or … Alt-country
Alternative country
… or … Alt.country
… or … Alt. Country [mind the gap]
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Data Source - Content vs. Data
comma
slash
new line
period?no, greek middle dot U+00B7
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Data Source - Content vs. Data
Hyphen U+002D
figure dash U+2012
minus sign U+2015
em dash U+2014
en dash U+2013
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Data Source - DBpedia• http://wiki.dbpedia.org/
• bziped N-Triples or N-Quads RDF entries
• Different datasets:
• Titles
• Categories
• Infobox data
• Short Abstracts
• In the end was not used
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Data Acquisition - Wiki
List of Rock Genres Rock Genres Rock Artists
Store
Store HTML
Capture Links
Store HTML
Python scripts
Postgres
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Data Exploration
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Data Exploration
“I personally … literally just look at the screen, just like the matrix”
Claudia Perlich, multi-award winner Data Scientist
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Data Exploration
“… the dirty little secret that I have won all of them because I have found something wrong with the data… I would like to play around with dataset and get initimately familiar with dataset and its properties.“
Claudia Perlich
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Album Genre
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Album Genre
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50 Years of Rock (1965-1989)
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50 Years of Rock 1965
1. rock (23) 2. folk rock (15) 3. rock and roll (13) 4. folk (12) 5. rhythm and blues (12) 6. blues rock (10) 7. country (9) The Who
My Generation
“Rock” as genre was king with The likes of The Who and Beatles
Rock and Roll, popular then, soon to disappear from the list
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50 Years of Rock 1966
1. folk rock (25) 2. garage rock (21) 3. psychedelic rock (20) 4. rock (19) 5. folk (14) 6. protopunk (11) 7. pop (11) Bob Dylan
Blonde on Blonde
Folk Rock was popular all of the sixties with a resurgence in the early 70s
This is obviously named retrospectively but along with Garage rock to influence punk
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50 Years of Rock 1967
1. psychedelic rock (56) ↑ 2. folk rock (30) 3. pop (19) 4. folk (19) 5. rock (18) 6. garage rock (12) 7. psychedelic pop (12) The Beatles
Sgt. Pepper's Lonely Hearts Club Band
67, a big year with Monterey Pop Festival, was all about psychedelia
Even for psychedelic pop
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50 Years of Rock 1968
1. psychedelic rock (70) ← 2. rock (29) 3. folk rock (26) 4. blues rock (25) 5. folk (18) 6. acid rock (18) 7. progressive rock (15) Jimi Hendrix
Electric Ladyland
No comment, listen to Jimi!
Note Acid Rock and emergence of progressive rock
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50 Years of Rock 1969
1. psychedelic rock (60) ← 2. rock (40) 3. folk rock (33) 4. hard rock (27) 5. folk (26) 6. progressive rock (25) 7. country (22)
Led Zeppelin Led ZeppelinNot much changed… progrock
moving up
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50 Years of Rock 1970
1. rock (57) 2. folk rock (47) ↑ 3. psychedelic rock (44) !! 4. hard rock (40) ↑ 5. progressive rock (31) ↑ 6. country rock (25) 7. folk (24) The Velvet Underground
LoadedArtists leaving psychedelia for a harder sound
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50 Years of Rock 1971
1. rock (47) 2. hard rock (34) ↑ 3. folk rock (33) ! 4. progressive rock (33) ↑ 5. psychedelic rock (26) ! 6. folk (24) 7. country rock (18) CAN
Tago MagoProgressive rock and hard rock moving up
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50 Years of Rock 1972
1. rock (54) 2. folk rock (34) 3. progressive rock (29) 4. hard rock (29) 5. country rock (27) 6. folk (25) 7. country (20) Jethro Tull
Thick as a Brick
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50 Years of Rock 1973
1. rock (60) 2. hard rock (44) ↑ 3. progressive rock (40) 4. folk rock (29) 5. country (24) 6. glam rock (22) 7. country rock (22)
Flashy dresses and make-up, bring it on!
Pink Floyd Dark Side of the Moon
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50 Years of Rock 1974
1. rock (58) 2. hard rock (52) 3. progressive rock (40) 4. glam rock (29) ↑ 5. folk rock (28) 6. blues rock (20) 7. country rock (20) Supertramp
Crime of the Century
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50 Years of Rock 1975
1. rock (53) 2. hard rock (52) 3. progressive rock (37) 4. folk rock (23) 5. country (20) 6. blues rock (20) 7. country rock (18) Patti Smith
Horses
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50 Years of Rock 1976
1. rock (71) 2. hard rock (56) 3. progressive rock (28) 4. heavy metal (19) 5. pop (19) 6. folk (18) 7. country (18)
Did you notice?! Heavy Metal is now a thing…
AC/DC High Voltage
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50 Years of Rock 1977
1. rock (77) 2. hard rock (43) 3. progressive rock (29) 4. punk rock (21) 5. pop (19) 6. folk rock (15) 7. country rock (14)
Oh yeah, punk rock in full swing and pretty much mainstream.
Sex Pistols Never Mind the Bollocks
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50 Years of Rock 1978
1. rock (77) 2. hard rock (40) 3. progressive rock (24) 4. new wave (23) 5. pop (21) 6. country (20) 7. punk rock (19)
New wave with a more layered sound replacing punk rock
Talking Heads More Songs About Buildings and Food
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50 Years of Rock 1979
1. rock (68) 2. new wave (49) ↑ 3. post-punk (42) 4. hard rock (38) ! 5. country (22) 6. punk rock (20) 7. progressive rock (15) !
Only after two years of punk, we have post-punk… phew
Gary Numan Replicas
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50 Years of Rock 1980
1. rock (66) 2. new wave (57) 3. post-punk (49) 4. hard rock (38) 5. country (24) 6. heavy metal (22) 7. punk rock (21) Joy Division
Closer
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50 Years of Rock 1981
1. new wave (75) ↑ 2. rock (71) 3. post-punk (68) 4. hard rock (41) 5. synthpop (25) 6. heavy metal (21) 7. country (19)
Another movement is already in motion with softer keyboard-based sound
Klaus Nomi Klaus Nomi
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50 Years of Rock 1982
1. new wave (79) 2. post-punk (61) 3. rock (61) 4. hard rock (37) 5. heavy metal (28) ↑ 6. synthpop (28) 7. hardcore punk (21) Iron Maiden
Number of the BeastOther than new wave and post-punk, two completely different sounds growing, heavy metal on one hand and synth pop on the other…
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50 Years of Rock 1983
1. rock (74) 2. new wave (71) 3. post-punk (45) ! 4. synthpop (39) ↑ 5. heavy metal (36) 6. hard rock (35) 7. pop rock (24) The Police
Synchronicity
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50 Years of Rock 1984
1. new wave (73) 2. rock (61) 3. post-punk (44) 4. heavy metal (37) 5. synthpop (37) 6. hard rock (26) 7. alternative rock (24)
In case you haven’t noticed, New Wave has been on the top spot for a few years
Echo and the Bunnymen Ocean Rain
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50 Years of Rock 1985
1. new wave (66) 2. rock (56) 3. post-punk (45) 4. heavy metal (33) 5. pop rock (33) 6. alternative rock (28) ↑ 7. synthpop (28) !
Alternative Rock appearing… soon to label much of the rock music we have now…
The Fall This Nation’s Saving Grace
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50 Years of Rock 1986
1. rock (68) 2. new wave (48) ! 3. alternative rock (45) ↑ 4. heavy metal (42) 5. post-punk (40) 6. hard rock (31) 7. synthpop (28)
Synthpop is over… only to come back after 25 years.
The Smiths The Queen Is Dead
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50 Years of Rock 1987
1. rock (62) 2. alternative rock (50) ↑ 3. hard rock (36) 4. thrash metal (35) 5. heavy metal (31) 6. new wave (29) ! 7. pop rock (24)
Wow… where did this come from?!
Testament The Legacy
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50 Years of Rock 1988
1. alternative rock (59) ↑ 2. rock (58) 3. heavy metal (42) 4. hard rock (40) 5. thrash metal (33) 6. synthpop (24) 7. new wave (23) !
New wave is out of favour after almost 10 years…
Sonic Youth Daydream Nation
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50 Years of Rock 1989
1. rock (80) 2. alternative rock (67) 3. hard rock (41) 4. thrash metal (39) 5. heavy metal (34) 6. new wave (26) 7. pop (22) The Cure
Disintegration
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Data Models
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Data Models Model?!
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Data Models Model
Mathematical representation of a concept based on parameters that impact that concept
• Rating of a native app • Stackoverflow score • Credit score • Fraud check
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Data Models Model Example
(Average)
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Data Models Graph 101
Social Network Analysis and Graph Theory
• Nodes/vertices and edges/lines • Directedness:
• Directed • Undirected
• Degree, InDegree/OutDegree • Weight
A B
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Data Models Centrality
API - Related artists
12
4
2
2
1
Same degree Different betweenness
Degree
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Graph Codez
import networkx as nx
g = nx.Graph() g.add_edge(‘a’, ‘b’) g.add_edge(‘b’, ‘c’) … print len(g[‘b’]) # degree c = nx.betweenness_centrality(g, normalized=True) # c -> dictionary of node names and their score
DiGraph()
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Modelling Influence using Wiki
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Data Models Cited Influence
Howlin’ Wolf
Captain Beefheart
1940 1964
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Data Models Cited InfluenceMost influential Rock Artists Based on out-degree
The Beatles => 188 Black Sabbath => 127 Led Zeppelin => 118 Jimi Hendrix => 114 Bob Dylan => 94 Pink Floyd => 86 Iron Maiden => 77 Metallica => 77 The Rolling Stones => 66 The Beach Boys => 65 Neil Young => 63 Nirvana => 62 Slayer => 60 Queen => 59
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Data Models Cited InfluenceMost influential Rock Artists Based on Betweenness Centrality
Jimi Hendrix => 53476.2014921 The Beatles => 47511.7957531 Bob Dylan => 38107.0298185 Led Zeppelin => 32701.7223273 Nirvana => 29733.9066836 Metallica => 29356.6009213 Queen => 28989.2844223 Robert Smith => 28880.670718 Elvis Presley => 28463.2891497 Slade => 27656.487307 Iron Maiden => 22449.6697023 Ramones => 22437.6112965 Rush => 21125.9481602 Neil Young => 19913.887522
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Data Models Cited InfluenceMost influential Artists Based on Betweenness Centrality
Metallica => 566.06 Iron Maiden => 419.21 Corey Taylor => 146.0 Led Zeppelin => 122.73 Slipknot => 116.58 King Diamond => 94.7 Machine Head => 85.12 Rush => 70.41 Black Sabbath => 68.0 Van Halen => 54.56 Deep Purple => 53.5 Megadeth => 42.63 Guns N' Roses => 24.25
Heavy MetalNirvana => 490.08 Muse => 114.5 Weezer => 97.33 Pixies => 94.17 Sonic Youth => 78.5 Rivers Cuomo => 69.5 Siouxsie and the Banshees => 51.67 The Smiths => 51.5 Jeff Buckley => 46.17 The Offspring => 43.0 Placebo => 42.0 My Chemical Romance => 34.0 The Smashing Pumpkins => 32.33
Alternative RockRush => 54.0 Marillion => 34.0 Pink Floyd => 33.0 Yes => 20.0 Porcupine Tree => 19.5 Dream Theater => 19.0 Chris Squire => 16.5 Primus => 15.0 Tool => 12.0 Mahavishnu Orchestra => 8.0 Geddy Lee => 7.0 Neil Peart => 5.0 Keith Emerson => 5.0
Progressive Rock
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Shaping a Model
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Shaping a Model•Start with Literature survey •Draw parallels with similar domains •If you still cannot find one, define a new model
•Try to refine your model with a quantitative measure if available
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Shaping Visionaries ModelVisionary: Influencing vs. being influenced
V: visionary factor deg+: out-degree deg-: in-degree e: the exponential function
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Shaping Visionaries ModelJoni Mitchell => 44.0 Roxy Music => 31.0 Leonard Cohen => 31.0 Josh White => 31.0 Robert Johnson => 24.0 Etta James => 23.0 Discharge => 22.0 Sam Cooke => 21.0 Duke Ellington => 20.0 Marc Bolan => 19.0 Hank Marvin => 17.0 Jonathan Richman => 16.0 Scott Walker => 16.0 Testament => 16.0 The Police => 16.0 Skip James => 15.0 Albert King => 15.0 The Cure => 14.7151776469 Nico => 14.0
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Data Models Visionaries ModelMost influential Artists in genres
Radiohead => 15.0 Depeche Mode => 12.0 Morrissey => 11.0 Robert Smith => 11.0 The Replacements => 10.0 The Cure => 8.83 XTC => 8.0 Stone Temple Pilots => 6.0 Duran Duran => 6.0 Nick Cave => 6.0 Wipers => 5.0 Johnny Marr => 4.0 Jane's Addiction => 4.0
Alternative RockThe Stooges => 6.0 The Jam => 6.0 Sex Pistols => 4.05 Jawbreaker => 4.0 The Runaways => 4.0 The Dickies => 4.0 Circle Jerks => 3.0 Big Black => 3.0 Patti Smith => 3.0 Elvis Costello => 3.0 The Only Ones => 3.0 Kevin Seconds => 3.0 Descendents => 2.94
Punk RockCaptain Beefheart => 7.0 The Magic Band => 6.0 Genesis => 5.0 Scott Walker => 5.0 Scott Engel => 3.0 Talk Talk => 3.0 Sparks => 2.0 Richard Wright => 2.0 Roxy Music => 1.84 Pink Floyd => 1.49 Mark Hollis => 1.0 Nico => 1.0 Lou Reed => 1.0
Art RockDave Lombardo => 11.0 Napalm Death => 8.0 Morbid Angel => 3.68 Possessed => 3.31 Carcass => 2.21 Immolation => 2.0 Vulcano => 2.0 Hellhammer => 2.0 Autopsy => 1.47 Repulsion => 1.1 Entombed => 1.1 Impetigo => 1.0 Nihilist => 1.0
Death Metal
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Shaping Impact ModelImact: Influencing many in a short span
Imp: impact factor deg+: out-degree L: longevity (initial continuous years active)
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Shaping Impact ModelImact: Influencing many in a short span
Cream => 3.33 Sex Pistols => 2.19 Joy Division => 2.0 Jimi Hendrix => 1.83 The Beatles => 1.59 The Smiths => 1.19 Big Star => 1.19 Parliament => 1.11 Nirvana => 1.0 Ritchie Valens => 0.78 Led Zeppelin => 0.73 Traffic => 0.67
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Shaping Impact ModelImact: Influencing many in a short span in a specific genre
Nirvana => 0.5 The Smiths => 0.5 Pixies => 0.28 Happy Mondays => 0.11 Jeff Buckley => 0.1 Jane's Addiction => 0.08 Soundgarden => 0.08 Violent Femmes => 0.06 The Replacements => 0.06 A Perfect Circle => 0.06 Sublime => 0.05 The Hush Sound => 0.04 The Get Up Kids => 0.03
Alternative RockSex Pistols => 0.69 Fuel => 0.22 Descendents => 0.16 The Runaways => 0.16 The Clash => 0.16 Hot Water Music => 0.13 The Stooges => 0.09 Buzzcocks => 0.08 Misfits => 0.06 Ramones => 0.05 The Jam => 0.05 Dead Kennedys => 0.05 The Replacements => 0.05
Punk RockCream => 1.67 Jimi Hendrix => 0.56 Thin Lizzy => 0.39 Led Zeppelin => 0.33 Deep Purple => 0.27 Ram Jam => 0.25 The Stooges => 0.11 Jim Morrison => 0.09 The Runaways => 0.08 Alice Cooper => 0.08 The Doors => 0.06 The Who => 0.04 Judas Priest => 0.02
Hard RockJoy Division => 0.56 Bauhaus => 0.028 The Police => 0.02 Siouxsie and Banshees => 0.02 Robert Smith => 0.006 Ultravox => 0.005 New Order => 0.005 My Bloody Valentine => 0.004 Sonic Youth => 0.004 Talking Heads => 0.003 Nick Cave => 0.002 The Cure => 0.001 David Byrne => 0.001
Post-punk
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Other Models
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Weighted graph Album GenresKrautrock
Psychedelic Rock
Experimental Rock
1
1
1
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Genre Affinity
Alternative Rock
Art Rock
Experimental Rock
Progressive Rock
29
47
3127
Indie Rock
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Genre Affinity
Indie Rock
Shoegazing
Alternative Rock
Dream Pop
22
25
2412
Post-rock
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Genre Affinity
Gothic Metal
Doom Metal
Black Metal
Heavy Metal
13
34
2712
Stoner Metal
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Clustering in Networks
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Clustering in Networks
u1 u2 u3 u4 u5u1 2u2 3u3 2u4 2u5 3
Spectral Clustering: Using Eigenvectors of the Laplacian Matrix
−u1 u2 u3 u4 u5
u1 1 0 0 1u2 1 1 1 0u3 0 1 0 1u4 0 1 0 1u5 1 0 1 1
=u1 u2 u3 u4 u5
u1 2 -1 0 0 -1u2 -1 3 -1 -1 0u3 0 -1 2 0 -1u4 0 -1 0 2 -1u5 -1 0 -1 -1 3
Degree MatrixAdjacency Matrix (Similarity Matrix)
Laplacian Matrix
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Clustering in Networks
Eigenvector: a vector (v) that by getting multiplied in matrix A does not result in changing its direction (similar to being multiplied by scalar λ)
u1 u2 u3 u4 u5
-0.7 0.3 -0.2 -0.1 0.7-0.7 0.3 -0.2 -0.1 0.7
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Spectral Clustering Codez
from sklearn.cluster import spectral_clustering import numpy as np
A = [[0.0 for x in n] for x in n] … # build adjacency matrix res = spectral_clustering(np.matrix(A), n_clusters) # res -> list of cluster indices e.g. [1,1,0,5,…]
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Spectral Clustering Results
Folk Rock Country Rock
Blues Folk
Country Americana Roots Rock Blues Rock
Southern Rock
Power Metal Progressive Metal Symphonic Metal Black Metal Melodic Death Metal Groove Metal Nu Metal Thrash Metal
Death Metal Metalcore Industrial Metal Gothic Metal Christian Metal Doom Metal Speed Metal
Alternative Rock Indie Rock
New Wave Synthpop
Electronica
Rock R&B Pop
Pop Rock Funk Soul
Heavy Metal Hard Rock
Alternative Metal
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50 Years of Rock (1990-2014)
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50 Years of Rock 1990
1. alternative rock (69) 2. rock (59) 3. hard rock (48) 4. thrash metal (45) 5. heavy metal (36) 6. punk rock (25) 7. country (23)
This will stay at this spot pretty much most of the remaining 25 years…
The Black Crowes Shake Your Money Maker
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50 Years of Rock 1991
1. alternative rock (82) 2. rock (68) 3. heavy metal (44) 4. hard rock (33) 5. thrash metal (30) 6. country (23) 7. pop (19) Nirvana
Nevermind
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50 Years of Rock 1992
1. alternative rock (83) 2. rock (56) 3. heavy metal (37) 4. hard rock (35) 5. thrash metal (29) 6. death metal (27) 7. indie rock (25)
A new genre is born….
Rage Against The Machine Rage Against The Machine
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50 Years of Rock 1993
1. alternative rock (125) 2. rock (72) 3. indie rock (39) 4. pop (28) 5. hard rock (28) 6. punk rock (28) 7. grunge (26)
It is all about the West Coast now, especially Seattle…
Tool Undertow
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50 Years of Rock 1994
1. alternative rock (123) 2. rock (81) 3. indie rock (52) 4. punk rock (46) ↑ 5. heavy metal (45) 6. hard rock (34) 7. country (24)
It is popular again and will be for the next 10 years…
Soundgarden Superknown
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50 Years of Rock 1995
1. alternative rock (139) 2. rock (68) 3. punk rock (49) 4. heavy metal (46) 5. indie rock (44) 6. hard rock (37) 7. grunge (28) The Smashing Pumpkins
Mellon Collie and the Infinite SadnessAs it is clear here, grunge was really
undercurrent of what was going at the time although first half of the 90s known to be the grunge half-decade
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50 Years of Rock 1996
1. alternative rock (132) 2. rock (98) 3. indie rock (60) ↑ 4. punk rock (44) 5. heavy metal (42) 6. hard rock (28) 7. country (27)
Another generic label not fully describing a genere…
Nick Cave and the Bad Seeds Murder Ballads
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50 Years of Rock 1997
1. alternative rock (119) 2. rock (78) 3. indie rock (60) 4. punk rock (45) 5. heavy metal (33) 6. alternative metal (23) 7. pop punk (22) Radiohead
OK Computer
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50 Years of Rock 1998
1. alternative rock (120) 2. rock (73) 3. indie rock (69) 4. punk rock (41) 5. heavy metal (37) 6. hard rock (29) 7. black metal (28)
Harder sound is more popular and we have a new genre in the list
Neutral Milk Hotel In the Aeroplane Over the Sea
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50 Years of Rock 1999
1. alternative rock (146) 2. indie rock (73) 3. rock (72) 4. heavy metal (40) 5. hard rock (40) 6. alternative metal (34) 7. punk rock (33) The Beta Band
The Beta BandWe really did not see Britpop making an appearance… although the impact and influence would exist
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50 Years of Rock 2000
1. alternative rock (103) 2. indie rock (88) 3. rock (86) 4. punk rock (45) 5. heavy metal (41) 6. pop punk (37) 7. alternative metal (37) Grandaddy
The Sophtware Slump
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50 Years of Rock 2001
1. alternative rock (117) 2. rock (94) 3. indie rock (83) 4. alternative metal (49) 5. nu metal (45) 6. hard rock (44) 7. punk rock (36)
Another metal subgenre appearing and will not be the last.
System of a Down Toxicity
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50 Years of Rock 2002
1. alternative rock (126) 2. indie rock (107) 3. rock (73) 4. heavy metal (54) 5. alternative metal (50) 6. hard rock (48) 7. punk rock (45) Interpol
Turn on the Bright Lights
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50 Years of Rock 2003
1. alternative rock (169) 2. indie rock (117) 3. rock (91) 4. alternative metal (63) 5. punk rock (53) 6. hard rock (51) 7. power metal (46) The White Stripes
Elephant
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50 Years of Rock 2004
1. alternative rock (155) 2. indie rock (130) 3. rock (96) 4. hard rock (64) 5. alternative metal (54) 6. punk rock (51) 7. pop punk (49)
Not much changing in the list…
Arcade Fire Funeral
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50 Years of Rock 2005
1. alternative rock (168) 2. indie rock (164) 3. rock (107) 4. hard rock (69) 5. heavy metal (57) 6. pop punk (55) 7. alternative metal (53) Sufjan Stevens
Illinoise
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50 Years of Rock 2006
1. alternative rock (188) 2. indie rock (179) 3. rock (105) 4. hard rock (70) 5. pop punk (58) 6. progressive metal (55) 7. power metal (46)
And yet another metal subgenre hitting mainstream…
MUSE Black Holes and Revelations
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50 Years of Rock 2007
1. alternative rock (208) 2. indie rock (201) 3. rock (109) 4. hard rock (67) 5. alternative metal (64) 6. heavy metal (62) 7. pop punk (59) Radiohead
In Rainbows
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50 Years of Rock 2008
1. alternative rock (203) 2. indie rock (197) 3. rock (101) 4. hard rock (60) 5. pop (56) 6. metalcore (51) 7. heavy metal (50)
And we have another metal variant that is here to stay…
Underoath Lost in the Sound of Separation
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50 Years of Rock 2009
1. alternative rock (200) 2. indie rock (194) 3. rock (72) 4. hard rock (68) 5. indie pop (59) 6. pop rock (59) 7. metalcore (56)
Softer sounds come back…
Animal Collective Merriweather Post Pavilion
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50 Years of Rock 2010
1. alternative rock (176) 2. indie rock (163) 3. rock (86) 4. hard rock (77) 5. indie pop (64) 6. heavy metal (62) 7. metalcore (61)
… and will be around… Arcade Fire The Suburbs
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50 Years of Rock 2011
1. alternative rock (169) 2. indie rock (162) 3. metalcore (63) 4. indie pop (60) 5. alternative metal (58) 6. heavy metal (57) 7. rock (57) Tinariwen
Tassili
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50 Years of Rock 2012
1. alternative rock (145) 2. indie rock (127) 3. rock (71) 4. hard rock (69) 5. alternative metal (50) 6. metalcore (49) 7. indie pop (45) Goat
World Music
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50 Years of Rock 2013
1. alternative rock (126) 2. indie rock (124) 3. rock (73) 4. hard rock (57) 5. synthpop (56) 6. metalcore (51) 7. indie pop (51)
And synthpop makes a come back after 30 years or so…
Queens of the Stone Age ...Like Clockwork
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50 Years of Rock 2014
1. alternative rock (108) 2. indie rock (106) 3. rock (50) 4. hard rock (48) 5. pop (41) 6. metalcore (41) 7. pop rock (40) Mac DeMarco
Salad Days
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Intelligent Models
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What is an Intelligent Model?
•Intelligent model is actually not a technically accurate term (butwe use it to denote shift in technique)
•Models learn from data instead of arbitrary definition •Can sometimes even distinguish and filter noise •Can represent a far more complex data relationships •Examples include HMM, SVM and recently Deep Learning •We review word2wec which uses Neural Network technique but not as deep as “Deep Learning”
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word2vec ModelA very powerful model representing words (tokens) as vectors
based on their proximity to other words (tokens).
Once represented as vectors, all algebraic operations can be applied to the vector representations.
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word2vec Model
Skip-gram: a proximity-based probability model trained using Neural Networks (Deep Learning)
Pink Floyd were an English rock band formed in LondonX XX
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word2vec Model
Break the text to
sentences
Tokenise each
sentence to word/
phrases
Feed the data to engine
Store the
Model
Training
Load the model
Construct the query
Run against the model (Filter noise)
Querying
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word2vec Codz (Training)import gensim
def train_and_save(multiword_dic_path, stopword_path, corpus_files_glob_pattern, mode_file_name = ‘rock_music.w2v'):
tknsr = dictionary_tokenization.DictionaryBasedMultiwordFinder(dictionary_path=multiword_dic_path)
filtr = stopword_filtering.StopwordFilter(stopword_path)
tokenizze = lambda text: filtr.filter(tknsr.tokenise(text))
wvc = gensim.models.Word2Vec(EnglishSentences(corpus_files_glob_pattern, tokenizze, True), min_count=2)
wvc.save(mode_file_name)
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word2vec Codz (Querying)
sims = word_sim.most_similar(positive=pos, negative=neg, topn=topn) # pos is an array of positive e.g. [“Nick Mason”, “The Rolling Stones”] # neg is an array of negative e.g. [“Pink Floyd”] # result is an array of tuples of results for # “Nick Mason” + “The Rolling Stones” - “Pink Floyd” # the first entry of which is “Charlie Watts”
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word2vec Demo
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Wrap-up
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Mystery missing artist
?
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References•All pictures from wikipedia.org used under Creative Commons •Source of all data is from wikipedia.org collected online using a single call and then stored and processed •Efficient Estimation of Word Representations in Vector Space. Mikolov et. al. http://arxiv.org/abs/1301.3781 •Gensim's word2vec •networkx lib •word2vec blog post (500K docs): Five crazy abstractions my Deep Learning word2vec model just did •word2vec on Rock music blog: Daft Punk+Tool=Muse: word2vec model trained on a small Rock music corpus •code for word2vec on wiki data •Highcharts: highcharts •word2vec paper: PDF •Automatic real-time road marking recognition using a feature-driven approach PDF •Video of the road marking recognition: here and here and here •Future of Programming - Rise of the Scientific Programmer (and fall of the craftsman)