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    -->(BOX-COX) Transformation breaks down for large (positive) coefficient values <--

    Hi, I have done a box-cox transformation of my response variable, using the following formula: (Y^lambda - 1)/lambda Previously, I have got some excellent help in understanding the way interpretation works for different levels of Y (q1,median,q3). My formula for inverse transformation is...
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    Relation algebra - matrix construction

    Hi, In a DEA-software I have, I must construct logical weights. These weights are constructed as a matrix solution of relationships between the variables. In the DEA analysis, the weights are used as restrictions in the linear programming. Lets say I have 5 variables (X1,X2,Z1,Z2,Z3), and...
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    weight construction in DEA analysis

    Hi, I hava a problem with weight construction in Data envelopment analysis. My goal is to construct weights that reflects the reality of my data. In un-weighted DEA, the results could be that one or more variables (either input- or output) are neglected for any DMU which is not realistic in...
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    how to proxy a variable? (geometrically declining weighted moving average)

    Hi, I would be very grateful if someone could help me with a problem. Im replicating a study with new panel data and must now proxy a variable by a given equation (from the study): π_(L,t) =(1-δ)*π_(L,t-1)+ δ*π_(t-1) :underscore means subscript It says that π_(L,t) is found from a weight on...