public TrainingSet(List <Patient> patients)
{
var bucketConfig = ParameterStore.GetBucketConfig();
foreach (var bucketSpec in bucketConfig.Buckets)
{
var bucketList = new List <Bucket>();
var bucketType = translateBucketType(bucketSpec);
// create delegate value accessor to perform faster
var valueAccessor = (Func <PatientSample, double?>)
Delegate.CreateDelegate(typeof(Func <PatientSample, double?>), null, typeof(PatientSample).GetProperty(bucketSpec.PropertyName).GetGetMethod());
// create a lambda for bucket number filtering. The first bucket is 6 hours and the rest are 4
Func <PatientSample, BucketSpec, bool> bucketNumberFilter = (ps, bs) => ps.TimeBeforeSepsis > (bs.BucketNumber == 1 ? -6 : bs.BucketNumber * -4 - 2);
// for each patient, create a bucket of their samples
foreach (var patient in patients)
{
var bucket = new Bucket(bucketType, bucketSpec.PropertyName, bucketSpec.BucketNumber, patient.IsSeptic);
var appropriateSamples = patient.PatientSampleDeltas
.Where(ps => bucketNumberFilter(ps, bucketSpec) && valueAccessor(ps).HasValue)
.Select(valueAccessor);
bucket.AddSamples(appropriateSamples);
if (!bucket.Empty /* to check */ && bucketSpec.BucketNumber == 1)
{
bucketList.Add(bucket);
}
}
_totalTrainingSets.Add(bucketSpec, bucketList);
}
}
