Examples of edu.ucla.sspace.index.TernaryPermutationFunction

edu.ucla.sspace.index.TernaryPermutationFunction
A permutation function that is optimized for {@link TernaryVector} instances.This class precomputes the permutations as necessary and only requires {@code O(k)} time to compute a single permutation, where {@code k} is the number ofnon-zero elements in the {@code TernaryVector}. @author David Jurgens


        String permutationFuncProp =
            properties.getProperty(PERMUTATION_FUNCTION_PROPERTY);
        permutationFunc = (permutationFuncProp != null)
            ? loadPermutationFunction(permutationFuncProp)
            : new TernaryPermutationFunction();


        RandomIndexVectorGenerator indexVectorGenerator = 
            new RandomIndexVectorGenerator(vectorLength, properties);


        String useSparseProp =

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     */ 
    @SuppressWarnings("unchecked")
    private static PermutationFunction<TernaryVector> loadPermutationFunction(
            String className) {
        if (className == null)
            return new TernaryPermutationFunction();
        try {
            Class clazz = Class.forName(className);
            return (PermutationFunction<TernaryVector>)(clazz.newInstance());
        } catch (Exception e) {
            // catch all of the exception and rethrow them as an error

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        String permutationFuncProp =
            properties.getProperty(PERMUTATION_FUNCTION_PROPERTY);
        permutationFunc = (permutationFuncProp != null)
            ? loadPermutationFunction(permutationFuncProp)
            : new TernaryPermutationFunction();


        RandomIndexVectorGenerator indexVectorGenerator = 
            new RandomIndexVectorGenerator(vectorLength, properties);


        String useSparseProp =

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            if (!argOptions.hasOption('P'))
                return null;


            if (!argOptions.hasOption('p'))
                return new DefaultDependencyPermutationFunction<TernaryVector>(
                        new TernaryPermutationFunction());
            Class clazz = Class.forName(argOptions.getStringOption('p'));
            Constructor<?> c = clazz.getConstructor(PermutationFunction.class);                
            return (DependencyPermutationFunction<TernaryVector>)
                c.newInstance(new TernaryPermutationFunction());
        } catch (Exception e) {
            throw new Error(e);
        }
    }

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        String permutationFuncProp =
            properties.getProperty(PERMUTATION_FUNCTION_PROPERTY);
        permutationFunc = (permutationFuncProp != null)
            ? loadPermutationFunction(permutationFuncProp)
            : new TernaryPermutationFunction();


        RandomIndexVectorGenerator indexVectorGenerator = 
            new RandomIndexVectorGenerator(vectorLength, properties);


        String useSparseProp =

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edu.ucla.sspace.mains.DependencyRandomIndexingMain

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