Summary

(No information yet)

License

unknown (from Weka repository)

Dependencies

Tags

arff slurped Weka

Attribute Types

Integer,Floating Point,String

Download

# Instances: 531 / # Attributes: 103
HDF5 (466.6 KB) XML CSV ARFF LibSVM Matlab Octave

Files are converted on demand and the process can take up to a minute. Please wait until download begins.

Original Data Format

arff

Name

spectrometer

Version mldata

0

Comment

1. Title: Part of the IRAS Low Resolution Spectrometer Database

2. Sources: (a) Originator: Infra-Red Astronomy Satellite Project Database (b) Donor: John Stutz STUTZ@pluto.arc.nasa.gov -- It's possible that one of John's colleagues actually provided this to UCI, perhaps Mike Marshall (MARSHALL%PLU@io.arc.nasa.gov) (c) Date: March 1988 (approximately)

3. Past Usage: unknown -- A NASA-Ames research group concerned with unsupervised learning tasks may have used this database during their empirical studies of their algorithm/system (AUTOCLASS II). See the 1988 Machine Learning Conference Proceedings, 54-64, for a description of their algorithm.

4. Relevant Information: (from John Stutz)

   The Infra-Red Astronomy Satellite (IRAS) was the first attempt to map the full sky at infra-red wavelengths. This could not be done from ground observatories because large portions of the infra-red spectrum is absorbed by the atmosphere. The primary observing program was the full high resolution sky mapping performed by scanning at 4 frequencies. The Low Resolution Observation (IRAS-LRS) program observed high intensity sources over two continuous spectral bands. This database derives from a subset of the higher quality LRS observations taken between 12h and 24h right ascension.

   This database contains 531 high quality spectra derived from the IRAS-LRS database. The original data contained 100 spectral measurements in each of two overlapping bands. Of these, 44 blue band and 49 red band channels contain usable flux measurements. Only these are included here. The original spectral intensities values are compressed to 4-digits, and each spectrum includes 5 rescaling parameters. We have used the LRS specified algorithm to rescale these to units of spectral intensity (Janskys). Total intensity differences have been eliminated by normalizing each spectrum to a mean value of 5000.

   This database was originally obtained for use in development and testing of our AutoClass system for Bayesian classification. We have not retained any results from this development, having concentrated our efforts of a 5425 element version of the same data. Our classifications were based upon simultaneous modeling of all 93 spectral intensities. With the larger database we were able to find classes that correspond well with known spectral types associated with particular stellar types. We also found classes that match with the spectra expected of certain stellar processes under investigation by Ames astronomers. These classes have considerably enlarged the set of stars being investigated by those researchers.
   

Origional Data The origional fortran data file is given in spectra-2.data. The file spectra-2.head contains information about the .data file contents and how to rescale the compressed spectral intensities.

1. Number of Instances: 531

2. Number of Attributes: 103 (including the 10-attribute "header")

3. Attribute Information:

   1. LRS-name: (Suspected format: 5 digits, "+" or "-", 4 digits)
   2. LRS-class: integer - The LRS-class values range from 0 - 99 with the 10's digit giving the basic class and the 1's digit giving the subclass. These classes are based on features (peaks, valleys, and trends) of the spectral curves.
      
   3. ID-type: integer
   4. Right-Ascension: float - Astronomical longitude. 1h = 15deg
   5. Declination: float - Astronomical lattitude. -90 <= Dec <= 90
   6. Scale Factor: float - Proportional to source strength
   7. Blue base 1: integer - linear rescaling coefficient
   8. Blue base 2: integer - linear rescaling coefficient
   9. Red base 1: integer - linear rescaling coefficient

4. Red base 2: integer - linear rescaling coefficient 11-54: fluxes from the following 44 blue-band channel wavelengths: (all given as floating point numerals)

   • 1. 7.8636
   • 1. 8.0485
   • 1. 8.2286
   • 1. 8.4043
   • 1. 8.5758
   • 1. 8.7436
   • 1. 8.9078
   • 1. 9.0686
   • 1. 9.2262
   • 1. 9.3809
   • 1. 9.5328
   • 1. 9.6820
   • 1. 9.8286
   • 1. 9.9728
   • 1. 10.1148
   • 1. 10.2545
   • 1. 10.3922
   • 1. 10.5279
   • 1. 10.6616
   • 1. 10.7935
   • 1. 10.9237
   • 1. 11.0521
   • 1. 11.1790
   • 1. 11.3042
   • 1. 11.4280
   • 1. 11.5503
   • 1. 11.6711
   • 1. 11.7907
   • 1. 11.9089
   • 1. 12.0258
   • 1. 12.1415
   • 1. 12.2560
   • 1. 12.3693
   • 1. 12.4816
   • 1. 12.5927
   • 1. 12.7028
   • 1. 12.8118
   • 1. 12.9199
   • 1. 13.0269
   • 1. 13.1330
   • 1. 13.2382
   • 1. 13.3425
   • 1. 13.4459
   • 1. 13.5485 55-103: fluxes from the following 49 red-band channel wavelengths: (all given as floating point numerals)
   • 1. 10.9929
   • 1. 11.3704
   • 1. 11.7357
   • 1. 12.0899
   • 1. 12.4339
   • 1. 12.7687
   • 1. 13.0948
   • 1. 13.4131
   • 1. 13.7239
   • 1. 14.0278
   • 1. 14.3252
   • 1. 14.6166
   • 1. 14.9022
   • 1. 15.1825
   • 1. 15.4576
   • 1. 15.7280
   • 1. 15.9937
   • 1. 16.2551
   • 1. 16.5123
   • 1. 16.7656
   • 1. 17.0151
   • 1. 17.2610
   • 1. 17.5034
   • 1. 17.7425
   • 1. 17.9784
   • 1. 18.2113
   • 1. 18.4412
   • 1. 18.6682
   • 1. 18.8925
   • 1. 19.1142
   • 1. 19.3334
   • 1. 19.5500
   • 1. 19.7643
   • 1. 19.9763
   • 1. 20.1861
   • 1. 20.3937
   • 1. 20.5992
   • 1. 20.8026
   • 1. 21.0041
   • 1. 21.2037
   • 1. 21.4014
   • 1. 21.5973
   • 1. 21.7914
   • 1. 21.9838
   • 1. 22.1745
   • 1. 22.3636
   • 1. 22.5511
   • 1. 22.7371
   • 1. 22.9216

5. Missing Attribute Values: not checked (none?)

6. Class Distribution: not checked

Information about the dataset CLASSTYPE: nominal CLASSINDEX: second

Names

LRS-name,LRS-class,ID-type,Right-Ascension,Declination,Scale_Factor,Blue_base_1,Blue_base_2,Red_base_1,Red_base_2,

Types

1. nominal:12043-6225,12063-6259,12073-6233,12148-6741,12216-6218,12226+0102,12230-5943,12233-5920,12247-5842,12274-7647,12277+0441,12283-5650,12298-5754,12319-6728,12377-6102,12379-4959,12380+5607,12384-4536,12394-4338,12421-6217,12427+4542,12447+0425,12454-6659,12462-6418,12506-6004,12530+0340,12540-6845,12559-6041,12563-6100,13001+0527,13022-7650,13064-6103,13136-4426,13141-6119,13170-5404,13172+4547,13203-5536,13208-6027,13283-5839,13328-6244,13343-5807,13350-7221,13368-4941,13371-6249,13379-5426,13442-6109,13462-2807,13465-3412,13477-6532,13482-6716,13509-6348,13517-6515,13527-6117,13557-6442,13572-6347,13581-5930,14003-7633,14020-3515,14030-4629,14068-6158,14086-2839,14086-6907,14119-6453,14122-6133,14129-5940,14133+1925,14159-6038,14182-6144,14216-6152,14247+0454,14251-6256,14277+3904,14280-2952,14286-5905,14301-5734,14337-6215,14359-6037,14371+3245,14390+3147,14437+1520,14453-4920,14455-3625,14465-6000,14484-6152,14508+7421,14531-5337,14550-1214,14562-5406,14567+6607,14567-5846,14582-5926,14591-4438,15011-2505,15023-6916,15082-4808,15084-5702,15099-5509,15107-5726,15148-4940,15186-3604,15186-5730,15193+1429,15193+3132,15214-2244,15219-7545,15223-0203,15225-5605,15226-3603,15255+1944,15269-4400,15287-5811,15290-5546,15311-5538,15314+7847,15323-4920,15332-6430,15341+1515,15356-6722,15361+2441,15373-5308,15402-5449,15408-5413,15410-0133,15468-5018,15483+1517,15483-5514,15492+4837,15509-5207,15530-5201,15566+3609,15568-4513,15569-6135,15576-5400,16011+4722,16011-5424,16029-3041,16030-5156,16031-4856,16064-4200,16066-4427,16077-5830,16079-4812,16081+2511,16105-4205,16117-0334,16127-7834,16133-5151,16156-5613,16171-4759,16175-6120,16192-4900,16208-2215,16218-4701,16219-5048,16222-4738,16229-4947,16235+1900,16260+3454,16263-5533,16269+4159,16270-5213,16279-4709,16280-4154,16296-4417,16306+7223,16316-5026,16327-4848,16328-4656,16334-3107,16337-4525,16340-4634,16387-2700,16396-4429,16407-5639,16418+5459,16433-6856,16438-1133,16446-4243,16451-4312,16460-4022,16473+5753,16478-4322,16490-4618,16494-1252,16498-4143,16534-3030,16541-4901,16545-4214,16546-4057,16559-2557,16571-7548,16581-4058,16586-4142,16589-3315,16598-4117,17001-3651,17010-4323,17025-4719,17047-5650,17048-1601,17049-2440,17050-4123,17066-4028,17079-3243,17080-3215,17081+6422,17102-1031,17103-0559,17103-3551,17103-3702,17104-3146,17105-3746,17109-3942,17115-3322,17119+0859,17122-2707,17123+1107,17125-4814,17139+0446,17139-3746,17162-1934,17174-4641,17187-3750,17190+2658,17199-3512,17201-4613,17213-2219,17217-3916,17237-3102,17239-2812,17265-0725,17297+1747,17309-1724,17315-3414,17317-3331,17318-2342,17319-6234,17328-3327,17334+1537,17341-3453,17343+1052,17361+5746,17375-3652,17381-3442,17382-1704,17387-4343,17389-2045,17389-5742,17398-4344,17433-2523,17434-3414,17443-2519,17446-7809,17462-8647,17479-2927,17484-0800,17488-2800,17504-0234,17505-3143,17508-3419,17513-2313,17534-3030,17540-1919,17541+1110,17554+5129,17556+5813,17570-3713,17579+2335,17581-1744,18018-2802,18027-2314,18039-0813,18040-0941,18041-3317,18057-2616,18076+3445,18076-1034,18083-2630,18092-0437,18095+2704,18135-1456,18135-1740,18136-1859,18142-3646,18156-0653,18157+1757,18162-0246,18176-1848,18177-2951,18186+3143,18213+0335,18222+3933,18230+0544,18239-0655,18240+2326,18257-1000,18267-0606,18273-0738,18276+8236,18276-4717,18280-5639,18281+2149,18301-0656,18303-0519,18306+3657,18314-1131,18316-0602,18320-0352,18325-1138,18333+0533,18349+1023,18359+0847,18367-0452,18373-0021,18378-3731,18397+1738,18398-0220,18401+2854,18413+1354,18414-0527,18421+1147,18429-1721,18450-0922,18451-0824,18464-0656,18467-4802,18475+0926,18476+0555,18527+3650,18530+0817,18531+0016,18535+0726,18537-1035,18550+0130,18551+0323,18551+1345,18556+0811,18560+0638,19007-2247,19007-3826,19008+0726,19017-0545,19029+0808,19032-4602,19042-4858,19043+1009,19059-2219,19075+0921,19093-3256,19099+6711,19135+0931,19143-5032,19157-1706,19161+2343,19178-2620,19188-1603,19192+0922,19194+1734,19229+1708,19232+5008,19240+3615,19247-1722,19282+2253,19283+1944,19287+4602,19296+4331,19314-1629,19321+2757,19324+3033,19327+3024,19352+2030,19354+5005,19361-1658,19396+1637,19412+0337,19422+3506,19451+1824,19472+2127,19474-0744,19480+2447,19495+0835,19500-1709,19503+2219,19510-5919,19528-2919,19536+3237,19537+2212,19548+3035,19550-0201,19575-5930,19585+5200,19586+3637,19594+4047,19595-2751,20010+3011,20015+3019,20024+3330,20028+3910,20038-2722,20042-4241,20052+0554,20072+3116,20075-6005,20094-1121,20111-4708,20113+4917,20124+6605,20135-7152,20161-1600,20165+3413,20171+3519,20193+3527,20194+3646,20200+3624,20215+6243,20248+7505,20248-2825,20253+3814,20255+4054,20267+2105,20275+4001,20297+3221,20310+4029,20318+3829,20340+5338,20350+3741,20356+1805,20365+1154,20396+4757,20403+3700,20417-0500,20431+1754,20435+3825,20440-0105,20479+0554,20484-7202,20491+4236,20502+4709,20529+3013,20532+5554,20541-6549,20549+5245,20570+2714,21003+4801,21032-0024,21035+5136,21044-1637,21069-3843,21086+5238,21088+6817,21190+5140,21206-4054,21243-6943,21245+6221,21270+7135,21286+1055,21305+2118,21312+5405,21318+5631,21320+3850,21341+4508,21368-3812,21373+4540,21377+5042,21377-0200,21383+4513,21389+5405,21399+3516,21401+7354,21417+0938,21449+4950,21453-4708,21456+6422,21489+5301,21543-1421,21552+6323,21554+6204,21558+5907,21563+5630,22017+2806,22035+3506,22091+5757,22097+5647,22142-8454,22150-6030,22165+4331,22177+5936,22190-0751,22196-4612,22212+5542,22230-4841,22231-4529,22241+6005,22264+5858,22267-4400,22272+5435,22280+1250,22282+5644,22303+5950,22306+5510,22317+5838,22345+5809,22456+5453,22476+4047,22512+6100,22516+0838,22518+6600,22525-2952,22526+8446,22540-5740,22585+6402,23000+5932,23013+2748,23095+5925,23134-7031,23138+6204,23151+5912,23166+1655,23202+5901,23213-4521,23284+5958,23309+2213,23320+4316,23365+5159,23416+6130,23439+5412,23491+6243,23496+6131,23528+4821,23541+7031,23564-5651
2. nominal:2,3,4,5,12,13,14,15,16,17,18,21,22,23,24,25,26,27,28,29,31,32,33,34,35,36,37,38,39,41,42,43,44,45,50,69,71,72,73,79,80,81,82,85,91,92,95,96
3. nominal:0,2,3,4
4. numeric
5. numeric
6. numeric
7. numeric
8. numeric
9. numeric
10. numeric

Data (first 10 data points)

LRS-...	LRS-...	ID-t...	Righ...	Decl...	Scal...	Blue...	Blue...	Red_...	Red_...	...
1204...	28	2	12.073	-62.4...	1.25...	2498	2630	1740	1783	...
1206...	85	3	12.106	-62.9...	2.97...	1086	1241	421	674	...
1207...	95	3	12.123	-62.5...	3.13...	481	270	63	451	...
1214...	18	4	12.247	-67.6...	1.73...	191	232	103	103	...
1221...	42	0	12.36	-62.3...	2.18...	1401	1268	1042	1063	...
1222...	4	4	12.378	1.046	4.84...	515	589	403	419	...
1223...	23	4	12.384	-59.7...	5.64...	497	525	286	338	...
1223...	29	2	12.389	-59.3...	5.29...	747	901	293	313	...
1224...	18	2	12.412	-58.7...	5.56...	557	550	330	328	...
1227...	4	0	12.457	-76.7...	4.75...	535	568	324	362	...
...	...	...	...	...	...	...	...	...	...	...

Description

A gzip'ed tar containing UCI and UCI KDD datasets (uci-20070111.tar.gz, 17,952,832 Bytes)

URLs

(No information yet)

Publications

Data Source

http://www.ics.uci.edu/~mlearn/MLRepository.html http://kdd.ics.uci.edu/

Measurement Details

Usage Scenario

revision 1

by mldata on 2010-11-06 09:58

No one has posted any comments yet. Perhaps you would like to be the first?

Leave a comment

This item was downloaded 3278 times and viewed 2252 times.

No Tasks yet on dataset uci-20070111 spectrometer