|1. Title: Large Soybean Database | |2. Sources: | (a) Michalski,R.S. Learning by being told and learning from | examples: an experimental comparison of the two methodes of knowledge | acquisition in the context of developing an expert system for soybean | desease diagnoiss", International Journal of Policy Analysis and | Information Systems, 1980, 4(2), 125-161. | (b) Donor: Ming Tan & Jeff Schlimmer (Jeff.Schlimmer%cs.cmu.edu) | (c) Date: 11 July 1988 | |3. Past Usage: | 1. See above. | 2. Tan, M., & Eshelman, L. (1988). Using weighted networks to represent | classification knowledge in noisy domains. Proceedings of the Fifth | International Conference on Machine Learning (pp. 121-134). Ann Arbor, | Michigan: Morgan Kaufmann. | -- IWN recorded a 97.1% classification accuracy | -- 290 training and 340 test instances | 3. Fisher,D.H. & Schlimmer,J.C. (1988). Concept Simplification and | Predictive Accuracy. Proceedings of the Fifth | International Conference on Machine Learning (pp. 121-134). Ann Arbor, | Michigan: Morgan Kaufmann. | -- Notes why this database is highly predictable | |4. Relevant Information Paragraph: | There are 19 classes, only the first 15 of which have been used in prior | work. The folklore seems to be that the last four classes are | unjustified by the data since they have so few examples. | There are 35 categorical attributes, some nominal and some ordered. The | value ``dna'' means does not apply. The values for attributes are | encoded numerically, with the first value encoded as ``0,'' the second as | ``1,'' and so forth. An unknown values is encoded as ``-1.'' | |5. Number of Instances: 316 | |6. Number of Attributes: 35 (all have been nominalized) | |7. Attribute Information: | -- 19 Classes | diaporthe-stem-canker, charcoal-rot, rhizoctonia-root-rot, | phytophthora-rot, brown-stem-rot, powdery-mildew, | downy-mildew, brown-spot, bacterial-blight, | bacterial-pustule, purple-seed-stain, anthracnose, | phyllosticta-leaf-spot, alternarialeaf-spot, | frog-eye-leaf-spot, diaporthe-pod-&-stem-blight, | cyst-nematode, 2-4-d-injury, herbicide-injury. | | 1. date: april,may,june,july,august,september,october,?. | 2. plant-stand: normal,lt-normal,?. | 3. precip: lt-norm,norm,gt-norm,?. | 4. temp: lt-norm,norm,gt-norm,?. | 5. hail: yes,no,?. | 6. crop-hist: diff-lst-year,same-lst-yr,same-lst-two-yrs, | same-lst-sev-yrs,?. | 7. area-damaged: scattered,low-areas,upper-areas,whole-field,?. | 8. severity: minor,pot-severe,severe,?. | 9. seed-tmt: none,fungicide,other,?. | 10. germination: 90-100%,80-89%,lt-80%,?. | 11. plant-growth: norm,abnorm,?. | 12. leaves: norm,abnorm. | 13. leafspots-halo: absent,yellow-halos,no-yellow-halos,?. | 14. leafspots-marg: w-s-marg,no-w-s-marg,dna,?. | 15. leafspot-size: lt-1/8,gt-1/8,dna,?. | 16. leaf-shread: absent,present,?. | 17. leaf-malf: absent,present,?. | 18. leaf-mild: absent,upper-surf,lower-surf,?. | 19. stem: norm,abnorm,?. | 20. lodging: yes,no,?. | 21. stem-cankers: absent,below-soil,above-soil,above-sec-nde,?. | 22. canker-lesion: dna,brown,dk-brown-blk,tan,?. | 23. fruiting-bodies: absent,present,?. | 24. external decay: absent,firm-and-dry,watery,?. | 25. mycelium: absent,present,?. | 26. int-discolor: none,brown,black,?. | 27. sclerotia: absent,present,?. | 28. fruit-pods: norm,diseased,few-present,dna,?. | 29. fruit spots: absent,colored,brown-w/blk-specks,distort,dna,?. | 30. seed: norm,abnorm,?. | 31. mold-growth: absent,present,?. | 32. seed-discolor: absent,present,?. | 33. seed-size: norm,lt-norm,?. | 34. shriveling: absent,present,?. | 35. roots: norm,rotted,galls-cysts,?. | |8. Number of Missing Attribute Values: | 1. date: 0 | 2. plant-stand: 1 | 3. precip: 8 | 4. temp: 11 | 5. hail: 7 | 6. crop-hist: 41 | 7. area-damaged: 1 | 8. severity: 1 | 9. seed-tmt: 41 | 10. germination: 41 | 11. plant-growth: 36 | 12. leaves: 1 | 13. leafspots-halo: 0 | 14. leafspots-marg: 25 | 15. leafspot-size: 25 | 16. leaf-shread: 25 | 17. leaf-malf: 26 | 18. leaf-mild: 25 | 19. stem: 30 | 20. lodging: 1 | 21. stem-cankers: 41 | 22. canker-lesion: 11 | 23. fruiting-bodies: 11 | 24. external decay: 35 | 25. mycelium: 11 | 26. int-discolor: 11 | 27. sclerotia: 11 | 28. fruit-pods: 11 | 29. fruit spots: 25 | 30. seed: 35 | 31. mold-growth: 29 | 32. seed-discolor: 29 | 33. seed-size: 35 | 34. shriveling: 29 | 35. roots: 35 | |9. Class Distribution: | 1. diaporthe-stem-canker: 10 | 2. charcoal-rot: 10 | 3. rhizoctonia-root-rot: 10 | 4. phytophthora-rot: 40 | 5. brown-stem-rot: 20 | 6. powdery-mildew: 10 | 7. downy-mildew: 10 | 8. brown-spot: 40 | 9. bacterial-blight: 10 | 10. bacterial-pustule: 10 | 11. purple-seed-stain: 10 | 12. anthracnose: 20 | 13. phyllosticta-leaf-spot: 10 | 14. alternarialeaf-spot: 40 | 15. frog-eye-leaf-spot: 40 | 16. diaporthe-pod-&-stem-blight: 6 | 17. cyst-nematode: 6 | 18. 2-4-d-injury: 1 | 19. herbicide-injury: 4 | |---------------------------------------------------------- | Classes (19) | ------- diaporthe-stem-canker, charcoal-rot, rhizoctonia-root-rot, phytophthora-rot, brown-stem-rot, powdery-mildew, downy-mildew, brown-spot, bacterial-blight, bacterial-pustule, purple-seed-stain, anthracnose, phyllosticta-leaf-spot, alternarialeaf-spot, frog-eye-leaf-spot, diaporthe-pod-&-stem-blight, cyst-nematode, 2-4-d-injury, herbicide-injury. | Attributes | ---------- date: april,may,june,july,august,september,october. plant-stand: normal,lt-normal. precip: lt-norm,norm,gt-norm. temp: lt-norm,norm,gt-norm. hail: yes,no. crop-hist: diff-lst-year,same-lst-yr,same-lst-two-yrs, same-lst-sev-yrs. area-damaged: scattered,low-areas,upper-areas,whole-field. severity: minor,pot-severe,severe. seed-tmt: none,fungicide,other. germination: 90-100%,80-89%,lt-80%. plant-growth: norm,abnorm. leaves: norm,abnorm. leafspots-halo: absent,yellow-halos,no-yellow-halos. leafspots-marg: w-s-marg,no-w-s-marg,dna. leafspot-size: lt-1/8,gt-1/8,dna. leaf-shread: absent,present. leaf-malf: absent,present. leaf-mild: absent,upper-surf,lower-surf. stem: norm,abnorm. lodging: yes,no. stem-cankers: absent,below-soil,above-soil,above-sec-nde. canker-lesion: dna,brown,dk-brown-blk,tan. fruiting-bodies: absent,present. external decay: absent,firm-and-dry,watery. mycelium: absent,present. int-discolor: none,brown,black. sclerotia: absent,present. fruit-pods: norm,diseased,few-present,dna. fruit spots: absent,colored,brown-w/blk-specks,distort,dna. seed: norm,abnorm. mold-growth: absent,present. seed-discolor: absent,present. seed-size: norm,lt-norm. shriveling: absent,present. roots: norm,rotted,galls-cysts.