Example usage for org.apache.commons.math4.util Pair Pair

Introduction

In this page you can find the example usage for org.apache.commons.math4.util Pair Pair.

Prototype

public Pair(K k, V v) 

Source Link

Document

Create an entry representing a mapping from the specified key to the specified value.

Usage

From source file:delfos.rs.contentbased.vsm.booleanvsm.SparseVector.java

public List<Pair<Key, Double>> entrySet() {
    return map.entrySet().stream().sorted((entry1, entry2) -> entry1.getKey().compareTo(entry2.getKey()))
            .map(entry -> new Pair<>(entry.getKey(), entry.getValue())).collect(Collectors.toList());
}

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From source file:delfos.dataset.util.DatasetPrinter.java

public static String printCompactRatingTableSortedByNumRatings(DatasetLoader<? extends Rating> datasetLoader,
        Collection<User> _users) {

    final List<User> users = _users.stream().sorted(User.BY_ID).collect(Collectors.toList());
    final List<Item> itemsAllUsersRated = datasetLoader.getContentDataset().stream().sorted(Item.BY_ID)
            .map(item -> {//www.  j av a 2 s. c  om
                List<User> listOfUsersThatRated = datasetLoader.getRatingsDataset()
                        .getItemRatingsRated(item.getId()).values().stream().filter(rating -> {
                            return _users.contains(rating.getUser());
                        }).map(rating -> rating.getUser()).collect(Collectors.toList());
                GroupOfUsers groupOfUsersThatRated = new GroupOfUsers(listOfUsersThatRated);
                return new Pair<GroupOfUsers, Item>(groupOfUsersThatRated, item);
            }).filter(pair -> !pair.getKey().isEmpty())
            .sorted((pair1, pair2) -> -pair1.getKey().compareTo(pair2.getKey())).map(pair -> pair.getValue())
            .collect(Collectors.toList());

    return actuallyDoTheTable(itemsAllUsersRated, users, datasetLoader);
}

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