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Deriving Ideal Points B.Optimal Classification 1.Step1: find optimal cut points Nunn HelmsGoreKerryDole B-2NNNYN CambodiaYYNNY TowerNYNNY MLKNYNNN | B-2.

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Presentation on theme: "Deriving Ideal Points B.Optimal Classification 1.Step1: find optimal cut points Nunn HelmsGoreKerryDole B-2NNNYN CambodiaYYNNY TowerNYNNY MLKNYNNN | B-2."— Presentation transcript:

1 Deriving Ideal Points B.Optimal Classification 1.Step1: find optimal cut points Nunn HelmsGoreKerryDole B-2NNNYN CambodiaYYNNY TowerNYNNY MLKNYNNN | B-2 Classification Errors 1

2 Deriving Ideal Points B.Optimal Classification 2.Step2: move Senators to Reduce Error Nunn HelmsDoleGoreKerry B-2NNNNY CambodiaYYYNN TowerNYYNN | | Cambodia B-2 Tower MLK Classification Errors 0 1

3 Deriving Ideal Points B.Optimal Classification 3.Repeat Step1: find optimal cut points. HelmsDole Nunn Gore Kerry B-2 NN N N Y Cambodia YY Y N N Tower YY N N N MLKY N N N N | | Cambodia B-2 Tower MLK Classification Errors

4 Deriving Ideal Points B.Optimal Classification 3.Repeat Step1: find optimal cut points. HelmsDole Nunn Gore Kerry B-2 NN N N Y Cambodia YY Y N N Tower YY N N N MLKY N N N N | | | Cambodia B-2 Tower MLK Classification Errors 0 1


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