What does a root-to-node path mean in the job-sequencing tree?
A path from the root records the ordered partial sequence of chosen jobs. Following a route in the drawn tree corresponds to selecting the jobs along that route in order; for example, the route using then means doing job 1 and job 4 and not taking jobs 2 and 3 along that partial path.
Conditions
- The tree is the job-sequencing state-space tree drawn on the board.
- Each edge label indicates appending one job to the current partial sequence.
Reasoning, step by step
- Identify the path from the root to a specific node.
- Read the edge labels along the path in order.
- Interpret the sequence of labels as the partial job sequence being considered.
- Note that jobs not on the path are not taken along that route.
Example
The instructor states, "So if I follow one of the route, it says that I am doing first job and fourth job. I am not taking second and third job. That is the meaning."
Common misconceptions
- Misreading a partial path as a complete schedule that implies all jobs have been handled.
- Assuming the order of jobs on the path does not matter.
Watch the explanation
2:58 – 3:05Watch this moment ↗
Explore next
Answers are generated from source material and independently checked. Consult the original video or creator if something is unclear.