Correct predictions are in blue. If we detect only a subset of a labelled sentence, we highlight the caught part as blue, the missing part light blue. False positives are in green and false negatives are in red.

Problem Manpower_Planning — Constraint detection

A company is undergoing a number of changes that will affect its manpower requirements in future years . Owing to the installation of new machinery , fewer unskilled but more skilled and semi-skilled workers will be required . In addition to this , a downturn in trade is expected in the next year , which will reduce the need for workers in all categories . The estimated manpower requirements for the next three years are given in a table . The company wishes to decide its policy with regard to the following over the next three years : recruitment ; retraining ; redundancy ; short-time working . There is a natural wastage of labour . A fairly large number of workers leave during their first year . After this , the rate is much smaller . Taking this into account , the wastage rates are given in a table . There has been no recent recruitment and all workers in the current labour force have been employed for more than one year . It is possible to recruit a limited number of workers from outside . In any one year , the numbers that can be recruited in each category are as follows : 500 unskilled , 800 semi-skilled , 500 skilled . It is possible to retrain up to 200 unskilled workers per year to make them semi-skilled . This costs pounds 400 per worker . The retraining of semi-skilled workers to make them skilled is limited to no more than one quarter of the skilled labour force at the time as some training is done on the job . Retraining a semi-skilled worker in this way costs pounds 500 . Downgrading of workers to a lower skill is possible but 50 % of such workers leave , although it costs the company nothing . -LRB- This wastage is additional to the `` natural wastage '' described above -RRB- . The redundancy payment to an unskilled worker is pounds 200 and to a semi-skilled or skilled worker is pounds 500 . It is possible to employ up to 150 more workers over the whole company than are needed , but the extra costs per employee per year are as follows : 1500 pounds for unskilled , 2000 for semi-skilled , 3000 for skilled . Up to 50 workers in each category of skill can be put on short-time working . The cost of this -LRB- per employee per year -RRB- is as follows : 500 pounds for unskilled , 400 for semi-skilled , 400 for skilled . An employee on short-time working meets the production requirements of half a full-time employee . The company 's declared objective is to minimise redundancy . How should they operate in order to do this ? If their policy were to minimise costs , how much extra would this save ? Deduce the cost of saving each type of job each year .

Problem Manpower_Planning — Detection of the decisions and objects to be modeled

A company is undergoing a number of changes that will affect its manpower requirements in future years . Owing to the installation of new machinery , fewer unskilled but more skilled and semi-skilled workers will be required . In addition to this , a downturn in trade is expected in the next year , which will reduce the need for workers in all categories . The estimated manpower requirements for the next three years are given in a table . The company wishes to decide its policy with regard to the following over the next three years : recruitment ; retraining ; redundancy ; short-time working . There is a natural wastage of labour . A fairly large number of workers leave during their first year . After this , the rate is much smaller . Taking this into account , the wastage rates are given in a table . There has been no recent recruitment and all workers in the current labour force have been employed for more than one year . It is possible to recruit a limited number of workers from outside . In any one year , the numbers that can be recruited in each category are as follows : 500 unskilled , 800 semi-skilled , 500 skilled . It is possible to retrain up to 200 unskilled workers per year to make them semi-skilled . This costs pounds 400 per worker . The retraining of semi-skilled workers to make them skilled is limited to no more than one quarter of the skilled labour force at the time as some training is done on the job . Retraining a semi-skilled worker in this way costs pounds 500 . Downgrading of workers to a lower skill is possible but 50 % of such workers leave , although it costs the company nothing . -LRB- This wastage is additional to the `` natural wastage '' described above -RRB- . The redundancy payment to an unskilled worker is pounds 200 and to a semi-skilled or skilled worker is pounds 500 . It is possible to employ up to 150 more workers over the whole company than are needed , but the extra costs per employee per year are as follows : 1500 pounds for unskilled , 2000 for semi-skilled , 3000 for skilled . Up to 50 workers in each category of skill can be put on short-time working . The cost of this -LRB- per employee per year -RRB- is as follows : 500 pounds for unskilled , 400 for semi-skilled , 400 for skilled . An employee on short-time working meets the production requirements of half a full-time employee . The company 's declared objective is to minimise redundancy . How should they operate in order to do this ? If their policy were to minimise costs , how much extra would this save ? Deduce the cost of saving each type of job each year .

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