Package org.grouplens.lenskit.vectors

Examples of org.grouplens.lenskit.vectors.MutableSparseVector.containsKey()

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        assertThat(urv.isEmpty(), equalTo(false));
        assertThat(urv.size(), equalTo(3));
        assertThat(urv.get(2), closeTo(3.0, 1.0e-6));
        assertThat(urv.get(3), closeTo(4.5, 1.0e-6));
        assertThat(urv.get(5), closeTo(2.3, 1.0e-6));
        assertThat(urv.containsKey(1), equalTo(false));
    }

    @Test
    public void testEmptyIRV() {
        List<Rating> ratings = Collections.emptyList();
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        MutableSparseVector msv = MutableSparseVector.create(1, 3, 5, 7, 8);
        scorer.score(42, msv);
        assertThat(msv.keySet().size(), equalTo(2));
        assertThat(msv.containsKey(1), equalTo(false));
        assertThat(msv.containsKey(3), equalTo(true));
        assertThat(msv.containsKey(5), equalTo(false));
        assertThat(msv.containsKey(7), equalTo(true));
        assertThat(msv.containsKey(8), equalTo(false));
        assertThat(msv.get(3), closeTo(4, 1.0e-5));
        assertThat(msv.get(7), closeTo(2, 1.0e-5));
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        scorer.score(42, msv);
        assertThat(msv.keySet().size(), equalTo(2));
        assertThat(msv.containsKey(1), equalTo(false));
        assertThat(msv.containsKey(3), equalTo(true));
        assertThat(msv.containsKey(5), equalTo(false));
        assertThat(msv.containsKey(7), equalTo(true));
        assertThat(msv.containsKey(8), equalTo(false));
        assertThat(msv.get(3), closeTo(4, 1.0e-5));
        assertThat(msv.get(7), closeTo(2, 1.0e-5));

        scorer.score(5, msv);
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        assertThat(msv.keySet().size(), equalTo(2));
        assertThat(msv.containsKey(1), equalTo(false));
        assertThat(msv.containsKey(3), equalTo(true));
        assertThat(msv.containsKey(5), equalTo(false));
        assertThat(msv.containsKey(7), equalTo(true));
        assertThat(msv.containsKey(8), equalTo(false));
        assertThat(msv.get(3), closeTo(4, 1.0e-5));
        assertThat(msv.get(7), closeTo(2, 1.0e-5));

        scorer.score(5, msv);
        assertThat(msv.keySet().isEmpty(), equalTo(true));
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        assertThat(urv.isEmpty(), equalTo(false));
        assertThat(urv.size(), equalTo(3));
        assertThat(urv.get(1), closeTo(3.0, 1.0e-6));
        assertThat(urv.get(3), closeTo(4.5, 1.0e-6));
        assertThat(urv.get(2), closeTo(2.3, 1.0e-6));
        assertThat(urv.containsKey(5), equalTo(false));
    }
}
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