From: Confidence-based laboratory test reduction recommendation algorithm
Symbol | Explanation |
---|---|
\(X\) | Input features (including laboratory values, vital signs, demographics, time differences in terms of hours, and observation indicators) |
\(O\) | Observation indicator. It is included in input features\(X\). (If the laboratory sample is observed,\({o}_{t}=1\); otherwise, \({o}_{t}=0\)) |
\(T\) | The total number of timesteps. In a time sequence, a record of a laboratory group occurs at one timestep. The maximum number of timesteps is 30 |
\(P\) | The selection probability (If the Hgb is selected, \({p}_{t}=1\); otherwise, \({p}_{t}=0\)) |
\(Y\) | Normality label (If the Hgb value is above the LBNR, \({y}_{t}=1\); otherwise, \({y}_{t}=0\)) |
\(Z\) | Stability label (If the Hgb value does not transit from normal to abnormal, \({z}_{t}=1\); otherwise, \({z}_{t}=0\)) |
\(V\) | Hemoglobin value |
\(\tau\) | The selection threshold. Its default value is 0.5. (If predicted selection probability \({p}_{t}>\tau\), the corresponding Hgb sample is selected as a candidate for reduction; otherwise, the Hgb sample is not a candidate for reduction) |