From: John Winters <johnREMOVE@THISsinodun.org.uk>
Date: Tue Dec 21 2004 - 10:28:40 CET

I'm steadily working up a real timetable with Tablix, but I've hit an
oddity since I added some explicit "conflict-with" specifications.
Although the run now ends with a score of 0 0 (all requirements met
completely), when I look at the output files there are some lessons
scheduled for classes which aren't even meant to be having them! Oddly
enough, the software seems to know it's done this because it shows them
in pale grey in the output file instead of the normal darker grey.

I'm puzzled by this. I thought the idea was to take a specified set of
tuples and to fit them as best it could into the schedule. Here it
seems to have made up some un-requested tuples.

I attach an input and output file. Note that 9 MAT1 to 9 MAT5 should be
having Maths lessons and 9 ENG1 to 9 ENG5 should be having English
lessons. For the most part they are, but just in places the software
has scheduled 9 MAT? to have an English lesson and vice versa.

Can anyone de-mystify me please?

Cheers,
John

Shiplake College

Shiplake Court, Shiplake, Henley-on-Thames

John Winters

---

Mon

	1	2	3	4	5	6	7	8
9-ENG1			English AMH 30	English2 AMH 33		Maths DGD 3	Maths2 DGD 33
9-ENG2			English LRF 16	English2 LRF 11
9-ENG3
9-ENG4			English MA 32	English2 MA 8
9-ENG5
9-MAT1			English AMH 30	English2 AMH 33		Maths DGD 3	Maths2 DGD 33
9-MAT2						Maths GSV 37	Maths2 GSV 32
9-MAT3			Maths JHW 34	Maths2 JHW 23
9-MAT4						Maths SWK 32	Maths2 SWK 11
9-MAT5						Maths EKB 34	Maths2 EKB 25

Tue

	1	2	3	4	5	6	7	8
9-ENG1							Maths DGD 15	Maths2 DGD 6
9-ENG2
9-ENG3
9-ENG4							English MA 24	English2 MA 34
9-ENG5							English LGC 19	English2 LGC 21
9-MAT1							Maths DGD 15	Maths2 DGD 6
9-MAT2
9-MAT3							Maths JHW 37	Maths2 JHW 4
9-MAT4
9-MAT5							Maths EKB 28	Maths2 EKB 20

Wed

	1	2	3	4	5	6	7	8
9-ENG1					English AMH 7	English2 AMH 36
9-ENG2					English LRF 36	English2 LRF 16
9-ENG3					English CEA 35	English2 CEA 4
9-ENG4
9-ENG5
9-MAT1					English AMH 7	English2 AMH 36
9-MAT2
9-MAT3
9-MAT4					Maths SWK 8	Maths2 SWK 17
9-MAT5

Thu

	1	2	3	4	5	6	7	8
9-ENG1				English AMH 35	English2 AMH 5
9-ENG2				English LRF 40	English2 LRF 16
9-ENG3				English CEA 14	English2 CEA 32
9-ENG4
9-ENG5				English LGC 6	English2 LGC 3
9-MAT1				English AMH 35	English2 AMH 5
9-MAT2				Maths GSV 8	Maths2 GSV 7
9-MAT3				Maths JHW 29	Maths2 JHW 13
9-MAT4
9-MAT5				Maths EKB 23	Maths2 EKB 30

Fri

	1	2	3	4	5	6	7	8
9-ENG1					Maths DGD 10	Maths2 DGD 32
9-ENG2
9-ENG3					English CEA 17	English2 CEA 6
9-ENG4					English MA 1	English2 MA 14
9-ENG5					English LGC 38	English2 LGC 2
9-MAT1					Maths DGD 10	Maths2 DGD 32
9-MAT2					Maths GSV 4	Maths2 GSV 25
9-MAT3
9-MAT4					Maths SWK 20	Maths2 SWK 5
9-MAT5

Sat

	1	2	3	4	5	6	7	8
9-ENG1
9-ENG2
9-ENG3
9-ENG4
9-ENG5
9-MAT1
9-MAT2
9-MAT3
9-MAT4
9-MAT5

---

AMH

	Mon	Tue	Wed	Thu	Fri
1
2
3	English 9 - ENG1 30
4	English2 9 - ENG1 33			English 9 - ENG1 35
5			English 9 - ENG1 7	English2 9 - ENG1 5
6			English2 9 - ENG1 36
7
8

LRF

	Mon	Tue	Wed	Thu	Fri
1
2
3	English 9 - ENG2 16
4	English2 9 - ENG2 11			English 9 - ENG2 40
5			English 9 - ENG2 36	English2 9 - ENG2 16
6			English2 9 - ENG2 16
7
8

CEA

	Mon	Tue	Wed	Thu	Fri
1
2
3
4				English 9 - ENG3 14
5			English 9 - ENG3 35	English2 9 - ENG3 32	English 9 - ENG3 17
6			English2 9 - ENG3 4		English2 9 - ENG3 6
7
8

MA

	Mon	Tue	Wed	Thu	Fri
1
2
3	English 9 - ENG4 32
4	English2 9 - ENG4 8
5					English 9 - ENG4 1
6					English2 9 - ENG4 14
7		English 9 - ENG4 24
8		English2 9 - ENG4 34

LGC

	Mon	Tue	Wed	Thu	Fri
1
2
3
4				English 9 - ENG5 6
5				English2 9 - ENG5 3	English 9 - ENG5 38
6					English2 9 - ENG5 2
7		English 9 - ENG5 19
8		English2 9 - ENG5 21

DGD

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5					Maths 9 - MAT1 10
6	Maths 9 - MAT1 3				Maths2 9 - MAT1 32
7	Maths2 9 - MAT1 33	Maths 9 - MAT1 15
8		Maths2 9 - MAT1 6

GSV

	Mon	Tue	Wed	Thu	Fri
1
2
3
4				Maths 9 - MAT2 8
5				Maths2 9 - MAT2 7	Maths 9 - MAT2 4
6	Maths 9 - MAT2 37				Maths2 9 - MAT2 25
7	Maths2 9 - MAT2 32
8

JHW

	Mon	Tue	Wed	Thu	Fri
1
2
3	Maths 9 - MAT3 34
4	Maths2 9 - MAT3 23			Maths 9 - MAT3 29
5				Maths2 9 - MAT3 13
6
7		Maths 9 - MAT3 37
8		Maths2 9 - MAT3 4

SWK

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5			Maths 9 - MAT4 8		Maths 9 - MAT4 20
6	Maths 9 - MAT4 32		Maths2 9 - MAT4 17		Maths2 9 - MAT4 5
7	Maths2 9 - MAT4 11
8

EKB

	Mon	Tue	Wed	Thu	Fri
1
2
3
4				Maths 9 - MAT5 23
5				Maths2 9 - MAT5 30
6	Maths 9 - MAT5 34
7	Maths2 9 - MAT5 25	Maths 9 - MAT5 28
8		Maths2 9 - MAT5 20

LSM

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

SLP

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

JAS

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

PCG

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

VJS

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

JDK

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

GSL

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

AJF

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

KH

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

KD

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

CHJ

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

LEE

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

NJB

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

GPW

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

AH

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

BDP

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

DCS

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

CD

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

JRS

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

AFH

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

CL

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

RPP

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

ADD

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

CS

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

MLW

	Mon	Tue	Wed	Thu	Fri
1
2
3
4
5
6
7
8

---

Grade of this timetable: 0

Tablix, version 0.1.0

Received on Tue Dec 21 10:40:45 2004