import edu.stanford.nlp.optimization.AbstractStochasticCachingDiffUpdateFunction;
import edu.stanford.nlp.optimization.HasFeatureGrouping;
import edu.stanford.nlp.util.ArrayUtils;
import edu.stanford.nlp.util.concurrent.*;
import edu.stanford.nlp.util.Index;
<BUG>import edu.stanford.nlp.util.Timing;
import edu.stanford.nlp.util.Triple;</BUG>
import edu.stanford.nlp.util.Quadruple;
import java.util.*;
public class CRFLogConditionalObjectiveFunction extends AbstractStochasticCachingDiffUpdateFunction implements HasCliquePotentialFunction, HasFeatureGrouping {

import edu.stanford.nlp.optimization.AbstractStochasticCachingDiffUpdateFunction;
import edu.stanford.nlp.optimization.HasFeatureGrouping;
import edu.stanford.nlp.util.ArrayUtils;
import edu.stanford.nlp.util.concurrent.*;
import edu.stanford.nlp.util.Index;
import edu.stanford.nlp.util.Timing;
import edu.stanford.nlp.util.Pair;
import edu.stanford.nlp.util.Triple;
import edu.stanford.nlp.util.Quadruple;
import java.util.*;
public class CRFLogConditionalObjectiveFunction extends AbstractStochasticCachingDiffUpdateFunction implements HasCliquePotentialFunction, HasFeatureGrouping {
