2014-09-11 16:39:05 +02:00
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// Copyright (c) 2014 Couchbase, Inc.
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2016-10-02 16:13:14 +02:00
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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2014-09-11 16:39:05 +02:00
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package cjk
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import (
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"reflect"
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"testing"
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"github.com/blevesearch/bleve/analysis"
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)
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func TestCJKBigramFilter(t *testing.T) {
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tests := []struct {
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outputUnigram bool
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input analysis.TokenStream
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output analysis.TokenStream
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}{
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2016-06-10 19:04:40 +02:00
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// first test that non-adjacent terms are not combined
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2014-09-11 16:39:05 +02:00
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{
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outputUnigram: false,
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input: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("こ"),
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Type: analysis.Ideographic,
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Position: 1,
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Start: 0,
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End: 3,
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},
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&analysis.Token{
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Term: []byte("ん"),
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Type: analysis.Ideographic,
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Position: 2,
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Start: 5,
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2016-06-10 19:04:40 +02:00
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End: 8,
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2014-09-11 16:39:05 +02:00
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},
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},
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output: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("こ"),
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Type: analysis.Single,
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Position: 1,
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Start: 0,
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End: 3,
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},
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&analysis.Token{
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Term: []byte("ん"),
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Type: analysis.Single,
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Position: 2,
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Start: 5,
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2016-06-10 19:04:40 +02:00
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End: 8,
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2014-09-11 16:39:05 +02:00
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},
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},
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},
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{
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outputUnigram: false,
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input: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("こ"),
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Type: analysis.Ideographic,
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Position: 1,
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Start: 0,
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End: 3,
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},
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&analysis.Token{
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Term: []byte("ん"),
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Type: analysis.Ideographic,
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Position: 2,
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Start: 3,
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End: 6,
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},
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&analysis.Token{
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Term: []byte("に"),
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Type: analysis.Ideographic,
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Position: 3,
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Start: 6,
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End: 9,
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},
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&analysis.Token{
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Term: []byte("ち"),
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Type: analysis.Ideographic,
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Position: 4,
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Start: 9,
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End: 12,
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},
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&analysis.Token{
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Term: []byte("は"),
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Type: analysis.Ideographic,
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Position: 5,
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Start: 12,
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End: 15,
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},
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&analysis.Token{
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Term: []byte("世"),
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Type: analysis.Ideographic,
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Position: 6,
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Start: 15,
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End: 18,
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},
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&analysis.Token{
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Term: []byte("界"),
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Type: analysis.Ideographic,
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Position: 7,
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Start: 18,
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End: 21,
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},
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},
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output: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("こん"),
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Type: analysis.Double,
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Position: 1,
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Start: 0,
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End: 6,
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},
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&analysis.Token{
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Term: []byte("んに"),
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Type: analysis.Double,
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Position: 2,
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Start: 3,
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End: 9,
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},
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&analysis.Token{
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Term: []byte("にち"),
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Type: analysis.Double,
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Position: 3,
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Start: 6,
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End: 12,
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},
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&analysis.Token{
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Term: []byte("ちは"),
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Type: analysis.Double,
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Position: 4,
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Start: 9,
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End: 15,
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},
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&analysis.Token{
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Term: []byte("は世"),
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Type: analysis.Double,
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Position: 5,
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Start: 12,
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End: 18,
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},
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&analysis.Token{
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Term: []byte("世界"),
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Type: analysis.Double,
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Position: 6,
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Start: 15,
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End: 21,
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},
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},
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},
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{
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outputUnigram: true,
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input: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("こ"),
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Type: analysis.Ideographic,
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Position: 1,
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Start: 0,
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End: 3,
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},
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&analysis.Token{
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Term: []byte("ん"),
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Type: analysis.Ideographic,
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Position: 2,
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Start: 3,
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End: 6,
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},
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&analysis.Token{
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Term: []byte("に"),
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Type: analysis.Ideographic,
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Position: 3,
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Start: 6,
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End: 9,
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},
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&analysis.Token{
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Term: []byte("ち"),
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Type: analysis.Ideographic,
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Position: 4,
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Start: 9,
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End: 12,
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},
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&analysis.Token{
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Term: []byte("は"),
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Type: analysis.Ideographic,
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Position: 5,
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Start: 12,
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End: 15,
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},
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&analysis.Token{
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Term: []byte("世"),
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Type: analysis.Ideographic,
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Position: 6,
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Start: 15,
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End: 18,
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},
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&analysis.Token{
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Term: []byte("界"),
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Type: analysis.Ideographic,
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Position: 7,
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Start: 18,
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End: 21,
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},
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},
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output: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("こ"),
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Type: analysis.Single,
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Position: 1,
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Start: 0,
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End: 3,
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},
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&analysis.Token{
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Term: []byte("こん"),
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Type: analysis.Double,
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Position: 1,
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Start: 0,
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End: 6,
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},
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&analysis.Token{
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Term: []byte("ん"),
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Type: analysis.Single,
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Position: 2,
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Start: 3,
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End: 6,
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},
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&analysis.Token{
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Term: []byte("んに"),
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Type: analysis.Double,
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Position: 2,
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Start: 3,
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End: 9,
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},
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&analysis.Token{
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Term: []byte("に"),
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Type: analysis.Single,
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Position: 3,
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Start: 6,
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End: 9,
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},
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&analysis.Token{
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Term: []byte("にち"),
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Type: analysis.Double,
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Position: 3,
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Start: 6,
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End: 12,
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},
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&analysis.Token{
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Term: []byte("ち"),
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Type: analysis.Single,
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Position: 4,
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Start: 9,
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End: 12,
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},
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&analysis.Token{
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Term: []byte("ちは"),
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Type: analysis.Double,
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Position: 4,
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Start: 9,
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End: 15,
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},
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&analysis.Token{
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Term: []byte("は"),
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Type: analysis.Single,
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Position: 5,
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Start: 12,
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End: 15,
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},
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&analysis.Token{
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Term: []byte("は世"),
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Type: analysis.Double,
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Position: 5,
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Start: 12,
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End: 18,
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},
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&analysis.Token{
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Term: []byte("世"),
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Type: analysis.Single,
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Position: 6,
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Start: 15,
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End: 18,
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},
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&analysis.Token{
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Term: []byte("世界"),
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Type: analysis.Double,
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Position: 6,
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Start: 15,
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End: 21,
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},
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&analysis.Token{
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Term: []byte("界"),
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Type: analysis.Single,
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Position: 7,
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Start: 18,
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End: 21,
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},
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},
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},
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{
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outputUnigram: false,
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input: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("こ"),
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Type: analysis.Ideographic,
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Position: 1,
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Start: 0,
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End: 3,
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},
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&analysis.Token{
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Term: []byte("ん"),
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Type: analysis.Ideographic,
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Position: 2,
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Start: 3,
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End: 6,
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},
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&analysis.Token{
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Term: []byte("に"),
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Type: analysis.Ideographic,
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Position: 3,
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Start: 6,
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End: 9,
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},
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&analysis.Token{
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Term: []byte("ち"),
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Type: analysis.Ideographic,
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Position: 4,
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Start: 9,
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End: 12,
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},
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&analysis.Token{
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Term: []byte("は"),
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Type: analysis.Ideographic,
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Position: 5,
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Start: 12,
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End: 15,
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},
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&analysis.Token{
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Term: []byte("cat"),
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Type: analysis.AlphaNumeric,
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Position: 6,
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Start: 12,
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End: 15,
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},
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&analysis.Token{
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Term: []byte("世"),
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Type: analysis.Ideographic,
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Position: 7,
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Start: 18,
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End: 21,
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},
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&analysis.Token{
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Term: []byte("界"),
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Type: analysis.Ideographic,
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Position: 8,
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Start: 21,
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End: 24,
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},
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},
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output: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("こん"),
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Type: analysis.Double,
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Position: 1,
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Start: 0,
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End: 6,
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},
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&analysis.Token{
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Term: []byte("んに"),
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Type: analysis.Double,
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Position: 2,
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Start: 3,
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End: 9,
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},
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&analysis.Token{
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Term: []byte("にち"),
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Type: analysis.Double,
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Position: 3,
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Start: 6,
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End: 12,
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},
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&analysis.Token{
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Term: []byte("ちは"),
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Type: analysis.Double,
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Position: 4,
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Start: 9,
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End: 15,
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},
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&analysis.Token{
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Term: []byte("cat"),
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Type: analysis.AlphaNumeric,
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2016-06-10 19:04:40 +02:00
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|
Position: 5,
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2014-09-11 16:39:05 +02:00
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Start: 12,
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End: 15,
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},
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&analysis.Token{
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|
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Term: []byte("世界"),
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|
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Type: analysis.Double,
|
2016-06-10 19:04:40 +02:00
|
|
|
Position: 6,
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2014-09-11 16:39:05 +02:00
|
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|
Start: 18,
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|
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End: 24,
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},
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},
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},
|
2016-06-10 19:04:40 +02:00
|
|
|
{
|
|
|
|
outputUnigram: false,
|
|
|
|
input: analysis.TokenStream{
|
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&analysis.Token{
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Term: []byte("パイプライン"),
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Type: analysis.Ideographic,
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Position: 1,
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Start: 0,
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End: 18,
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},
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},
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|
|
output: analysis.TokenStream{
|
|
|
|
&analysis.Token{
|
|
|
|
Term: []byte("パイ"),
|
|
|
|
Type: analysis.Double,
|
|
|
|
Position: 1,
|
|
|
|
Start: 0,
|
|
|
|
End: 6,
|
|
|
|
},
|
|
|
|
&analysis.Token{
|
|
|
|
Term: []byte("イプ"),
|
|
|
|
Type: analysis.Double,
|
|
|
|
Position: 2,
|
|
|
|
Start: 3,
|
|
|
|
End: 9,
|
|
|
|
},
|
|
|
|
&analysis.Token{
|
|
|
|
Term: []byte("プラ"),
|
|
|
|
Type: analysis.Double,
|
|
|
|
Position: 3,
|
|
|
|
Start: 6,
|
|
|
|
End: 12,
|
|
|
|
},
|
|
|
|
&analysis.Token{
|
|
|
|
Term: []byte("ライ"),
|
|
|
|
Type: analysis.Double,
|
|
|
|
Position: 4,
|
|
|
|
Start: 9,
|
|
|
|
End: 15,
|
|
|
|
},
|
|
|
|
&analysis.Token{
|
|
|
|
Term: []byte("イン"),
|
|
|
|
Type: analysis.Double,
|
|
|
|
Position: 5,
|
|
|
|
Start: 12,
|
|
|
|
End: 18,
|
|
|
|
},
|
|
|
|
},
|
|
|
|
},
|
2014-09-11 16:39:05 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
for _, test := range tests {
|
|
|
|
cjkBigramFilter := NewCJKBigramFilter(test.outputUnigram)
|
|
|
|
actual := cjkBigramFilter.Filter(test.input)
|
|
|
|
if !reflect.DeepEqual(actual, test.output) {
|
|
|
|
t.Errorf("expected %s, got %s", test.output, actual)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|