forked from kscience/kmath
Fixed algorithm mistakes. There was "index out of bounds" situation.
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@ -62,10 +62,16 @@ public fun DoubleFieldOpsND.dynamicTimeWarping(series1 : DoubleBuffer, series2 :
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pathLength++
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pathLength++
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while (index1 != 0 || index2 != 0) {
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while (index1 != 0 || index2 != 0) {
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when {
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when {
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index1 == 0 || costMatrix[index1, index2] == costMatrix[index1, index2 - 1] + abs(series1[index1] - series2[index2]) -> {
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index1 == 0 -> {
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index2--
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index2--
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}
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}
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index2 == 0 || costMatrix[index1, index2] == costMatrix[index1 - 1, index2] + abs(series1[index1] - series2[index2]) -> {
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index2 == 0 -> {
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index1--
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}
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costMatrix[index1, index2] == costMatrix[index1, index2 - 1] + abs(series1[index1] - series2[index2]) -> {
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index2--
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}
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costMatrix[index1, index2] == costMatrix[index1 - 1, index2] + abs(series1[index1] - series2[index2]) -> {
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index1--
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index1--
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}
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}
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costMatrix[index1, index2] == costMatrix[index1 - 1, index2 - 1] + abs(series1[index1] - series2[index2]) -> {
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costMatrix[index1, index2] == costMatrix[index1 - 1, index2 - 1] + abs(series1[index1] - series2[index2]) -> {
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