Z-Sequence: photometric redshift predictions for galaxy clusters with sequential random k-nearest neighbours
Abstract
ABSTRACT We introduce Z-Sequence, a novel empirical model that utilizes photometric measurements of observed galaxies within a specified search radius to estimate the photometric redshift of galaxy clusters. Z-Sequence itself is composed of a machine learning ensemble based on the k-nearest neighbours algorithm. We implement an automated feature selection strategy that iteratively determines appropriate combinations of filters and colours to minimize photometric redshift prediction error. We intend for Z-Sequence to be a standalone technique but it can be combined with cluster finders that do not intrinsically predict redshift, such as our own DEEP-CEE. In this proof-of-concept study, we train, fine-tune, and test Z-Sequence on publicly available cluster catalogues derived from the Sloan Digital Sky Survey. We determine the photometric redshift prediction error of Z-Sequence via the median value of |Δ$$z$$|/(1 + $$z$$) (across a photometric redshift range of 0.05 ≤ $$z$$ ≤ 0.6) to be ∼0.01 when applying a small search radius. The photometric redshift prediction error for test samples increases by 30–50 per cent when the search radius is enlarged, likely due to line-of-sight interloping galaxies. Eventually, we aim to apply Z-Sequence to upcoming imaging surveys such as the Legacy Survey of Space and Time to provide photometric redshift estimates for large samples of as yet undiscovered and distant clusters.
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1778569
- Resource Type:
- Published Article
- Journal Name:
- Monthly Notices of the Royal Astronomical Society
- Additional Journal Information:
- Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 503 Journal Issue: 4; Journal ID: ISSN 0035-8711
- Publisher:
- Oxford University Press
- Country of Publication:
- United Kingdom
- Language:
- English
Citation Formats
Chan, Matthew C., and Stott, John P. Z-Sequence: photometric redshift predictions for galaxy clusters with sequential random k-nearest neighbours. United Kingdom: N. p., 2021.
Web. doi:10.1093/mnras/stab858.
Chan, Matthew C., & Stott, John P. Z-Sequence: photometric redshift predictions for galaxy clusters with sequential random k-nearest neighbours. United Kingdom. https://doi.org/10.1093/mnras/stab858
Chan, Matthew C., and Stott, John P. Fri .
"Z-Sequence: photometric redshift predictions for galaxy clusters with sequential random k-nearest neighbours". United Kingdom. https://doi.org/10.1093/mnras/stab858.
@article{osti_1778569,
title = {Z-Sequence: photometric redshift predictions for galaxy clusters with sequential random k-nearest neighbours},
author = {Chan, Matthew C. and Stott, John P.},
abstractNote = {ABSTRACT We introduce Z-Sequence, a novel empirical model that utilizes photometric measurements of observed galaxies within a specified search radius to estimate the photometric redshift of galaxy clusters. Z-Sequence itself is composed of a machine learning ensemble based on the k-nearest neighbours algorithm. We implement an automated feature selection strategy that iteratively determines appropriate combinations of filters and colours to minimize photometric redshift prediction error. We intend for Z-Sequence to be a standalone technique but it can be combined with cluster finders that do not intrinsically predict redshift, such as our own DEEP-CEE. In this proof-of-concept study, we train, fine-tune, and test Z-Sequence on publicly available cluster catalogues derived from the Sloan Digital Sky Survey. We determine the photometric redshift prediction error of Z-Sequence via the median value of |Δ$z$|/(1 + $z$) (across a photometric redshift range of 0.05 ≤ $z$ ≤ 0.6) to be ∼0.01 when applying a small search radius. The photometric redshift prediction error for test samples increases by 30–50 per cent when the search radius is enlarged, likely due to line-of-sight interloping galaxies. Eventually, we aim to apply Z-Sequence to upcoming imaging surveys such as the Legacy Survey of Space and Time to provide photometric redshift estimates for large samples of as yet undiscovered and distant clusters.},
doi = {10.1093/mnras/stab858},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 4,
volume = 503,
place = {United Kingdom},
year = {Fri Mar 26 00:00:00 EDT 2021},
month = {Fri Mar 26 00:00:00 EDT 2021}
}
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Works referenced in this record:
Second data release of the Hyper Suprime-Cam Subaru Strategic Program
journal, October 2019
- Aihara, Hiroaki; AlSayyad, Yusra; Ando, Makoto
- Publications of the Astronomical Society of Japan
An Introduction to the Bootstrap
book, May 1994
- Efron, Bradley; Tibshirani, R. J.
- Monographs on Statistics and Applied Probability
A Cosmology Calculator for the World Wide Web
journal, December 2006
- Wright, E. L.
- Publications of the Astronomical Society of the Pacific, Vol. 118, Issue 850
Secondary standard stars for absolute spectrophotometry
journal, March 1983
- Oke, J. B.; Gunn, J. E.
- The Astrophysical Journal, Vol. 266
Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds
journal, June 1998
- Schlegel, David J.; Finkbeiner, Douglas P.; Davis, Marc
- The Astrophysical Journal, Vol. 500, Issue 2
Transfer Learning
book, January 2010
- Torrey, Lisa; Shavlik, Jude
- Handbook of Research on Machine Learning Applications and Trends
Cosmology and fundamental physics with the Euclid satellite
journal, April 2018
- Amendola, Luca; Appleby, Stephen; Avgoustidis, Anastasios
- Living Reviews in Relativity, Vol. 21, Issue 1
The Evolution of Galaxies in Clusters
journal, January 1984
- Dressler, A.
- Annual Review of Astronomy and Astrophysics, Vol. 22, Issue 1
Galaxy morphology in rich clusters - Implications for the formation and evolution of galaxies
journal, March 1980
- Dressler, A.
- The Astrophysical Journal, Vol. 236
CPz: Classification-aided photometric-redshift estimation
journal, October 2018
- Fotopoulou, S.; Paltani, S.
- Astronomy & Astrophysics, Vol. 619
The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: first measurement of baryon acoustic oscillations between redshift 0.8 and 2.2
journal, October 2017
- Ata, Metin; Baumgarten, Falk; Bautista, Julian
- Monthly Notices of the Royal Astronomical Society, Vol. 473, Issue 4
The prevention and handling of the missing data
journal, January 2013
- Kang, Hyun
- Korean Journal of Anesthesiology, Vol. 64, Issue 5
Nearest neighbor pattern classification
journal, January 1967
- Cover, T.; Hart, P.
- IEEE Transactions on Information Theory, Vol. 13, Issue 1, p. 21-27
The spectral evolution of galaxies. I - an observational approach
journal, October 1985
- Hamilton, D.
- The Astrophysical Journal, Vol. 297
Galaxy Clusters Identified from the sdss dr6 and Their Properties
journal, July 2009
- Wen, Z. L.; Han, J. L.; Liu, F. S.
- The Astrophysical Journal Supplement Series, Vol. 183, Issue 2
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
journal, March 2017
- Alam, Shadab; Ata, Metin; Bailey, Stephen
- Monthly Notices of the Royal Astronomical Society, Vol. 470, Issue 3
A Catalog of 132,684 Clusters of Galaxies Identified from Sloan Digital sky Survey iii
journal, March 2012
- Wen, Z. L.; Han, J. L.; Liu, F. S.
- The Astrophysical Journal Supplement Series, Vol. 199, Issue 2
Color-Magnitude Distribution of Face-On Nearby Galaxies in Sloan Digital sky Survey dr7
journal, May 2014
- Jin, Shuo-Wen; Gu, Qiusheng; Huang, Song
- The Astrophysical Journal, Vol. 787, Issue 1
Sequential random k-nearest neighbor feature selection for high-dimensional data
journal, April 2015
- Park, Chan Hee; Kim, Seoung Bum
- Expert Systems with Applications, Vol. 42, Issue 5
Planck 2015 results : XIII. Cosmological parameters
journal, September 2016
- Ade, P. A. R.; Aghanim, N.; Arnaud, M.
- Astronomy & Astrophysics, Vol. 594
The Southern Sky Redshift Survey
journal, July 1998
- da Costa, L. Nicolaci; Willmer, C. N. A.; Pellegrini, P. S.
- The Astronomical Journal, Vol. 116, Issue 1
The 2dF Galaxy Redshift Survey: spectra and redshifts
journal, December 2001
- Colless, Matthew; Dalton, Gavin; Maddox, Steve
- Monthly Notices of the Royal Astronomical Society, Vol. 328, Issue 4
Galaxy And Mass Assembly (GAMA): the input catalogue and star-galaxy separation
journal, February 2010
- Baldry, I. K.; Robotham, A. S. G.; Hill, D. T.
- Monthly Notices of the Royal Astronomical Society
The XMM Cluster Survey: optical analysis methodology and the first data release: The XMM Cluster Survey first data release
journal, April 2012
- Mehrtens, Nicola; Romer, A. Kathy; Hilton, Matt
- Monthly Notices of the Royal Astronomical Society, Vol. 423, Issue 2
Deep-CEE I: fishing for galaxy clusters with deep neural nets
journal, October 2019
- Chan, Matthew C.; Stott, John P.
- Monthly Notices of the Royal Astronomical Society, Vol. 490, Issue 4
The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: RSD measurement from the power spectrum and bispectrum of the DR12 BOSS galaxies
journal, October 2016
- Gil-Marín, Héctor; Percival, Will J.; Verde, Licia
- Monthly Notices of the Royal Astronomical Society, Vol. 465, Issue 2
Formation of Galaxy Clusters
journal, September 2012
- Kravtsov, Andrey V.; Borgani, Stefano
- Annual Review of Astronomy and Astrophysics, Vol. 50, Issue 1
The Dark Energy Survey: more than dark energy – an overview
journal, March 2016
- Abbott, T.; Abdalla, F. B.; Aleksic, J.
- Monthly Notices of the Royal Astronomical Society, Vol. 460, Issue 2, p. 1270-1299
The Hyper Suprime-Cam SSP Survey: Overview and survey design
journal, September 2017
- Aihara, Hiroaki; Arimoto, Nobuo; Armstrong, Robert
- Publications of the Astronomical Society of Japan, Vol. 70, Issue SP1
THE COSMOS2015 CATALOG: EXPLORING THE 1 < z < 6 UNIVERSE WITH HALF A MILLION GALAXIES
journal, June 2016
- Laigle, C.; McCracken, H. J.; Ilbert, O.
- The Astrophysical Journal Supplement Series, Vol. 224, Issue 2
The Sloan Digital Sky Survey: Technical Summary
journal, September 2000
- York, Donald G.; Adelman, J.; Anderson, Jr., John E.
- The Astronomical Journal, Vol. 120, Issue 3
Optical radii of galaxy clusters
journal, January 1995
- Girardi, M.; Biviano, A.; Giuricin, G.
- The Astrophysical Journal, Vol. 438
The Elements of Statistical Learning
book, January 2009
- Hastie, Trevor; Tibshirani, Robert; Friedman, Jerome
- Springer Series in Statistics
A Photometric Redshift Galaxy Catalog from the Red‐Sequence Cluster Survey
journal, June 2005
- Hsieh, B. C.; Yee, H. K. C.; Lin, H.
- The Astrophysical Journal Supplement Series, Vol. 158, Issue 2
An Increase in the Faint Red Galaxy Population in Massive Clusters since z ∼ 0.5
journal, May 2007
- Stott, J. P.; Smail, Ian; Edge, A. C.
- The Astrophysical Journal, Vol. 661, Issue 1
The 2mass Redshift Survey—Description and data Release
journal, March 2012
- Huchra, John P.; Macri, Lucas M.; Masters, Karen L.
- The Astrophysical Journal Supplement Series, Vol. 199, Issue 2
Empirical photometric redshifts of luminous red galaxies and clusters in the Sloan Digital Sky Survey
journal, September 2007
- Lopes, P. A. A.
- Monthly Notices of the Royal Astronomical Society, Vol. 380, Issue 4
The 6dF Galaxy Survey: final redshift release (DR3) and southern large-scale structures
journal, October 2009
- Jones, D. Heath; Read, Mike A.; Saunders, Will
- Monthly Notices of the Royal Astronomical Society, Vol. 399, Issue 2
An introduction to recursive partitioning: Rationale, application, and characteristics of classification and regression trees, bagging, and random forests.
journal, December 2009
- Strobl, Carolin; Malley, James; Tutz, Gerhard
- Psychological Methods, Vol. 14, Issue 4
PLS-regression: a basic tool of chemometrics
journal, October 2001
- Wold, Svante; Sjöström, Michael; Eriksson, Lennart
- Chemometrics and Intelligent Laboratory Systems, Vol. 58, Issue 2
X. On the criterion that a given system of deviations from the probable in the case of a correlated system of variables is such that it can be reasonably supposed to have arisen from random sampling
journal, July 1900
- Pearson, Karl
- The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, Vol. 50, Issue 302
Photometric redshifts for Hyper Suprime-Cam Subaru Strategic Program Data Release 1
journal, October 2017
- Tanaka, Masayuki; Coupon, Jean; Hsieh, Bau-Ching
- Publications of the Astronomical Society of Japan, Vol. 70, Issue SP1
Stellar masses and star formation histories for 10 5 galaxies from the Sloan Digital Sky Survey
journal, May 2003
- Kauffmann, Guinevere; Heckman, Timothy M.; Simon White, D. M.
- Monthly Notices of the Royal Astronomical Society, Vol. 341, Issue 1
The VizieR database of astronomical catalogues
journal, April 2000
- Ochsenbein, F.; Bauer, P.; Marcout, J.
- Astronomy and Astrophysics Supplement Series, Vol. 143, Issue 1
ImpZ: a new photometric redshift code for galaxies and quasars
journal, September 2004
- Babbedge, T. S. R.; Rowan-Robinson, M.; Gonzalez-Solares, E.
- Monthly Notices of the Royal Astronomical Society, Vol. 353, Issue 2
A new method to improve photometric redshift reconstruction: Applications to the Large Synoptic Survey Telescope
journal, January 2014
- Gorecki, Alexia; Abate, Alexandra; Ansari, Réza
- Astronomy & Astrophysics, Vol. 561
Systematics of the 4000 angstrom break in the spectra of galaxies
journal, October 1987
- Dressler, Alan; Shectman, Stephen A.
- The Astronomical Journal, Vol. 94
Measuring Reddening with Sloan Digital sky Survey Stellar Spectra and Recalibrating sfd
journal, August 2011
- Schlafly, Edward F.; Finkbeiner, Douglas P.
- The Astrophysical Journal, Vol. 737, Issue 2
A Modified Magnitude System that Produces Well-Behaved Magnitudes, Colors, and Errors Even for Low Signal-to-Noise Ratio Measurements
journal, September 1999
- Lupton, Robert H.; Gunn, James E.; Szalay, Alexander S.
- The Astronomical Journal, Vol. 118, Issue 3
The distance function effect on k-nearest neighbor classification for medical datasets
journal, August 2016
- Hu, Li-Yu; Huang, Min-Wei; Ke, Shih-Wen
- SpringerPlus, Vol. 5, Issue 1
Independent component analysis: algorithms and applications
journal, June 2000
- Hyvärinen, A.; Oja, E.
- Neural Networks, Vol. 13, Issue 4-5
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: observational systematics and baryon acoustic oscillations in the correlation function
journal, September 2016
- Ross, Ashley J.; Beutler, Florian; Chuang, Chia-Hsun
- Monthly Notices of the Royal Astronomical Society, Vol. 464, Issue 1
SDSS data management and photometric quality assessment
journal, October 2004
- Ivezi?, ?.; Lupton, R. H.; Schlegel, D.
- Astronomische Nachrichten, Vol. 325, Issue 6-8
Independent component analysis, A new concept?
journal, April 1994
- Comon, Pierre
- Signal Processing, Vol. 36, Issue 3
SPECTROSCOPIC CONFIRMATION OF THE RICH z = 1.80 GALAXY CLUSTER JKCS 041 USING THE WFC3 GRISM: ENVIRONMENTAL TRENDS IN THE AGES AND STRUCTURE OF QUIESCENT GALAXIES
journal, May 2014
- Newman, Andrew B.; Ellis, Richard S.; Andreon, Stefano
- The Astrophysical Journal, Vol. 788, Issue 1
The Slope of the Cluster Elliptical Red Sequence: A Probe of Cluster Evolution
journal, July 1998
- Gladders, Michael D.; Lopez‐Cruz, Omar; Yee, H. K. C.
- The Astrophysical Journal, Vol. 501, Issue 2
Photometric redshifts for the Kilo-Degree Survey: Machine-learning analysis with artificial neural networks
journal, August 2018
- Bilicki, M.; Hoekstra, H.; Brown, M. J. I.
- Astronomy & Astrophysics, Vol. 616
First data release of the Hyper Suprime-Cam Subaru Strategic Program
journal, October 2017
- Aihara, Hiroaki; Armstrong, Robert; Bickerton, Steven
- Publications of the Astronomical Society of Japan, Vol. 70, Issue SP1
Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
journal, June 2017
- Blanton, Michael R.; Bershady, Matthew A.; Abolfathi, Bela
- The Astronomical Journal, Vol. 154, Issue 1
LIII. On lines and planes of closest fit to systems of points in space
journal, November 1901
- Pearson, Karl
- The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, Vol. 2, Issue 11
Dark Energy Survey year 1 results: Cosmological constraints from galaxy clustering and weak lensing
journal, August 2018
- Abbott, T. M. C.; Abdalla, F. B.; Alarcon, A.
- Physical Review D, Vol. 98, Issue 4
The evolution of the red sequence slope in massive galaxy clusters
journal, April 2009
- Stott, J. P.; Pimbblet, K. A.; Edge, A. C.
- Monthly Notices of the Royal Astronomical Society, Vol. 394, Issue 4
redMaPPer. I. ALGORITHM AND SDSS DR8 CATALOG
journal, April 2014
- Rykoff, E. S.; Rozo, E.; Busha, M. T.
- The Astrophysical Journal, Vol. 785, Issue 2
An Empirical Algorithm for Broadband Photometric Redshifts of Quasars from the Sloan Digital Sky Survey
journal, December 2004
- Weinstein, Michael A.; Richards, Gordon T.; Schneider, Donald P.
- The Astrophysical Journal Supplement Series, Vol. 155, Issue 2
Photometric redshifts from SDSS images using a convolutional neural network
journal, December 2018
- Pasquet, Johanna; Bertin, E.; Treyer, M.
- Astronomy & Astrophysics, Vol. 621
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: anisotropic galaxy clustering in Fourier space
journal, December 2016
- Beutler, Florian; Seo, Hee-Jong; Saito, Shun
- Monthly Notices of the Royal Astronomical Society, Vol. 466, Issue 2
Cosmological Constraints from Galaxy Clusters in the 2500 Square-Degree Spt-Sz Survey
journal, November 2016
- Haan, T. de; Benson, B. A.; Bleem, L. E.
- The Astrophysical Journal, Vol. 832, Issue 1
The [ITAL]K[/ITAL]-Band Luminosity Function in Galaxy Clusters to [CLC][ITAL]z[/ITAL][/CLC] [FORMULA][F]∼1[/F][/FORMULA]
journal, August 1999
- De Propris, Roberto; Stanford, S. A.; Eisenhardt, Peter R.
- The Astronomical Journal, Vol. 118, Issue 2
Photometric Response Functions of the Sloan Digital sky Survey Imager
journal, March 2010
- Doi, Mamoru; Tanaka, Masayuki; Fukugita, Masataka
- The Astronomical Journal, Vol. 139, Issue 4
Photometric redshift analysis in the Dark Energy Survey Science Verification data
journal, October 2014
- Sánchez, C.; Carrasco Kind, M.; Lin, H.
- Monthly Notices of the Royal Astronomical Society, Vol. 445, Issue 2
The Dark Energy Survey: Data Release 1
journal, November 2018
- Abbott, T. M. C.; Abdalla, F. B.; Allam, S.
- The Astrophysical Journal Supplement Series, Vol. 239, Issue 2
Euclid preparation: III. Galaxy cluster detection in the wide photometric survey, performance and algorithm selection
journal, June 2019
- Adam, R.; Vannier, M.; Maurogordato, S.
- Astronomy & Astrophysics, Vol. 627
The Updated Zwicky Catalog (UZC)
journal, April 1999
- Falco, Emilio E.; Kurtz, Michael J.; Geller, Margaret J.
- Publications of the Astronomical Society of the Pacific, Vol. 111, Issue 758
A New Method For Galaxy Cluster Detection. I. The Algorithm
journal, October 2000
- Gladders, Michael D.; Yee, H. K. C.
- The Astronomical Journal, Vol. 120, Issue 4
KiDS-450 + 2dFLenS: Cosmological parameter constraints from weak gravitational lensing tomography and overlapping redshift-space galaxy clustering
journal, October 2017
- Joudaki, Shahab; Blake, Chris; Johnson, Andrew
- Monthly Notices of the Royal Astronomical Society, Vol. 474, Issue 4
TPZ: photometric redshift PDFs and ancillary information by using prediction trees and random forests
journal, May 2013
- Carrasco Kind, Matias; Brunner, Robert J.
- Monthly Notices of the Royal Astronomical Society, Vol. 432, Issue 2
The Distance-Weighted k-Nearest-Neighbor Rule
journal, April 1976
- Dudani, Sahibsingh A.
- IEEE Transactions on Systems, Man, and Cybernetics, Vol. SMC-6, Issue 4
The formation and evolution of clusters of galaxies in different cosmogonies
journal, October 1999
- Huss, A.; Jain, B.; Steinmetz, M.
- Monthly Notices of the Royal Astronomical Society, Vol. 308, Issue 4
HAWK-I imaging of the X-ray luminous galaxy cluster XMMU J2235.3-2557: The red sequence at
journal, August 2008
- Lidman, C.; Rosati, P.; Tanaka, M.
- Astronomy & Astrophysics, Vol. 489, Issue 3
Spectroscopic Target Selection in the Sloan Digital Sky Survey: The Main Galaxy Sample
journal, September 2002
- Strauss, Michael A.; Weinberg, David H.; Lupton, Robert H.
- The Astronomical Journal, Vol. 124, Issue 3
Conceptual complexity and the bias/variance tradeoff
journal, January 2011
- Briscoe, Erica; Feldman, Jacob
- Cognition, Vol. 118, Issue 1
THE RED SEQUENCE AT BIRTH IN THE GALAXY CLUSTER Cl J1449+0856 AT z = 2
journal, December 2016
- Strazzullo, V.; Daddi, E.; Gobat, R.
- The Astrophysical Journal, Vol. 833, Issue 2
Sdss-Iii: Massive Spectroscopic Surveys of the Distant Universe, the Milky way, and Extra-Solar Planetary Systems
journal, August 2011
- Eisenstein, Daniel J.; Weinberg, David H.; Agol, Eric
- The Astronomical Journal, Vol. 142, Issue 3
Bootstrap Methods: Another Look at the Jackknife
journal, January 1979
- Efron, B.
- The Annals of Statistics, Vol. 7, Issue 1
EVOLUTION OF THE COLOR-MAGNITUDE RELATION IN GALAXY CLUSTERS AT z ∼ 1 FROM THE ACS INTERMEDIATE REDSHIFT CLUSTER SURVEY
journal, December 2008
- Mei, Simona; Holden, Brad P.; Blakeslee, John P.
- The Astrophysical Journal, Vol. 690, Issue 1
The many flavours of photometric redshifts
journal, June 2018
- Salvato, Mara; Ilbert, Olivier; Hoyle, Ben
- Nature Astronomy, Vol. 3, Issue 3
COSMOS PHOTOMETRIC REDSHIFTS WITH 30-BANDS FOR 2-deg 2
journal, December 2008
- Ilbert, O.; Capak, P.; Salvato, M.
- The Astrophysical Journal, Vol. 690, Issue 2
The clustering of the SDSS main galaxy sample – II. Mock galaxy catalogues and a measurement of the growth of structure from redshift space distortions at z = 0.15
journal, March 2015
- Howlett, Cullan; Ross, Ashley J.; Samushia, Lado
- Monthly Notices of the Royal Astronomical Society, Vol. 449, Issue 1
LSST: From Science Drivers to Reference Design and Anticipated Data Products
journal, March 2019
- Ivezić, Željko; Kahn, Steven M.; Tyson, J. Anthony
- The Astrophysical Journal, Vol. 873, Issue 2
Fitting the integrated spectral energy distributions of galaxies
journal, August 2010
- Walcher, Jakob; Groves, Brent; Budavári, Tamás
- Astrophysics and Space Science, Vol. 331, Issue 1
Small sample size effects in statistical pattern recognition: recommendations for practitioners
journal, March 1991
- Raudys, S. J.; Jain, A. K.
- IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 13, Issue 3
Multidimensional binary search trees used for associative searching
journal, September 1975
- Bentley, Jon Louis
- Communications of the ACM, Vol. 18, Issue 9
Photometric redshifts for the SDSS Data Release 12
journal, April 2016
- Beck, Róbert; Dobos, László; Budavári, Tamás
- Monthly Notices of the Royal Astronomical Society, Vol. 460, Issue 2
A logical calculus of the ideas immanent in nervous activity
journal, December 1943
- McCulloch, Warren S.; Pitts, Walter
- The Bulletin of Mathematical Biophysics, Vol. 5, Issue 4
Galaxy Zoo: a sample of blue early-type galaxies at low redshift
journal, June 2009
- Schawinski, Kevin; Lintott, Chris; Thomas, Daniel
- Monthly Notices of the Royal Astronomical Society, Vol. 396, Issue 2
Analysis of a complex of statistical variables into principal components.
journal, January 1933
- Hotelling, H.
- Journal of Educational Psychology, Vol. 24, Issue 6
The Second Data Release of the Sloan Digital Sky Survey
journal, July 2004
- Abazajian, Kevork; Adelman-McCarthy, Jennifer K.; Agüeros, Marcel A.
- The Astronomical Journal, Vol. 128, Issue 1
The Ninth data Release of the Sloan Digital sky Survey: First Spectroscopic data from the Sdss-Iii Baryon Oscillation Spectroscopic Survey
journal, November 2012
- Ahn, Christopher P.; Alexandroff, Rachael; Allende Prieto, Carlos
- The Astrophysical Journal Supplement Series, Vol. 203, Issue 2
Comparative study between decision tree and knn of data mining classification technique
journal, November 2018
- Mohanapriya, M.; Lekha, J.
- Journal of Physics: Conference Series, Vol. 1142