Nursery scholl database / Attrasoft DecisionMaker 2.5

Nursery School Database

M. Olave, V. Rajkovic, M. Bohanec: An application for admission in public school systems. In (I. Th. M. Snellen and W. B. H. J. van de Donk and J.-P. Baquiast, editors) Expert Systems in Public Administration, pages 145-160. Elsevier Science Publishers (North Holland), 1989.

2. Information

Number of Instances: 12960 (instances completely cover the attribute space)

Number of Attributes: 8 + 1
Class Distribution (number of instances per class)

class N N[%]

-------------------------------------------

not_recom                    4320 (33.333 %)
recommend                  2 ( 0.015 %)
very_recom                  328 ( 2.531 %)
priority                         4266 (32.917 %)
spec_prior                   4044 (31.204 %)

The challenge here is that 3 of the above 5 classes (not_recom, priority, and spec_prior) have more than enough data to educate the DecisionMaker. Therefore, the DecisionMaker is expected to perform with 100% accuracy on these 3 classes. As you will see, this will be the case.

3. Attribute Values:

parents             usual(0), pretentious(10), great_pret
has_nurs           proper(0), less_proper(10), improper(20), critical(30), very_crit(40)
form                 complete(0), completed(10), incomplete(20), foster(30)
children            1, 2, 3, more(5)
housing             convenient(0), less_conv(10), critical(20)
finance              convenient(0), inconv(10)
social                 non-prob(0), slightly_prob(10), problematic(20)
health                 recommended(0), priority(10), not_recom(20)

Class
not_recom (40)
recommend (30)

very_recom (20)
priority (10)
spec_prior (0) 4. Database:

The Database file has 12960 instances. The data required for 100% accuracy is:

Class #Required #Database #Accuracy

not_recom           900          4320                     100%
recommend          900         2
very_recom          900         328
priority                 900         4266                     100%
spec_prior            900         4044                     100%
Total                     4500      12960

The most important feature here is that DecisionMaker is expected to predict with 100% accuracy for 3 of the 5 classes. The last 20 rows will be used for the question file. Below are the first 10 instances:

Nursery School Database File:
0 0 0 1 0 0 0 0 30
0 0 0 1 0 0 0 10 10
0 0 0 1 0 0 0 20 40
0 0 0 1 0 0 10 0 30
0 0 0 1 0 0 10 10 10
0 0 0 1 0 0 10 20 40
0 0 0 1 0 0 20 0 10
0 0 0 1 0 0 20 10 10
0 0 0 1 0 0 20 20 40
0 0 0 1 0 10 0 0 20

Below are the last 20 rows:

Question Answer

20 40 30 5 10 10 20 10            0
20 40 30 5 10 10 20 20            40
20 40 30 5 20 0 0 0                  0
20 40 30 5 20 0 0 10                0
20 40 30 5 20 0 0 20                40
20 40 30 5 20 0 10 0                0
20 40 30 5 20 0 10 10              0
20 40 30 5 20 0 10 20              40
20 40 30 5 20 0 20 0                0
20 40 30 5 20 0 20 10               0
20 40 30 5 20 0 20 20               40
20 40 30 5 20 10 0 0                 0
20 40 30 5 20 10 0 10               0
20 40 30 5 20 10 0 20               40
20 40 30 5 20 1010 0                0
20 40 30 5 20 10 10 10             0
20 40 30 5 20 10 10 20             40
20 40 30 5 20 10 20 0                0
20 40 30 5 20 10 20 10              0
20 40 30 5 20 10 20 20             40

which will be used for the question file. Click here to see the question file.

5. Results

Click "Integer/ + Predict":

================= Beginning ==================

20 40 30 5 10 10 20 10