1 | #Region "Microsoft.VisualBasic::ca487e112ea0bd80e3585708d1ca0aac, Microsoft.VisualBasic.Core\ComponentModel\Algorithm\Levenshtein\LevenshteinModel.vb" |
2 | |
3 | ' Author: |
4 | ' |
5 | ' asuka (amethyst.asuka@gcmodeller.org) |
6 | ' xie (genetics@smrucc.org) |
7 | ' xieguigang (xie.guigang@live.com) |
8 | ' |
9 | ' Copyright (c) 2018 GPL3 Licensed |
10 | ' |
11 | ' |
12 | ' GNU GENERAL PUBLIC LICENSE (GPL3) |
13 | ' |
14 | ' |
15 | ' This program is free software: you can redistribute it and/or modify |
16 | ' it under the terms of the GNU General Public License as published by |
17 | ' the Free Software Foundation, either version 3 of the License, or |
18 | ' (at your option) any later version. |
19 | ' |
20 | ' This program is distributed in the hope that it will be useful, |
21 | ' but WITHOUT ANY WARRANTY; without even the implied warranty of |
22 | ' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
23 | ' GNU General Public License for more details. |
24 | ' |
25 | ' You should have received a copy of the GNU General Public License |
26 | ' along with this program. If not, see <http://www.gnu.org/licenses/>. |
27 | |
28 | |
29 | |
30 | ' /********************************************************************************/ |
31 | |
32 | ' Summaries: |
33 | |
34 | ' Class DistResult |
35 | ' |
36 | ' Properties: Distance, DistEdits, DistTable, Hypotheses, Matches |
37 | ' MatchSimilarity, NumMatches, Path, Reference, Score |
38 | ' |
39 | ' Function: __getReference, __getSubject, __innerInsert, CopyTo, IsPath |
40 | ' ToString, TrimMatrix |
41 | ' |
42 | ' |
43 | ' /********************************************************************************/ |
44 | |
45 | #End Region |
46 | |
47 | Imports System.Drawing |
48 | Imports System.Text.RegularExpressions |
49 | Imports Microsoft.VisualBasic.Linq.Extensions |
50 | Imports Microsoft.VisualBasic.Net.Protocols |
51 | Imports Microsoft.VisualBasic.Text.Xml.Models |
52 | Imports sys = System.Math |
53 | |
54 | Namespace Text.Levenshtein |
55 | |
56 | Public Class DistResult |
57 | |
58 | Public Property Reference As String |
59 | Public Property Hypotheses As String |
60 | Public Property DistTable As Streams.Array.Double() |
61 | ''' <summary> |
62 | ''' How doest the <see cref="Hypotheses"/> evolve from <see cref="Reference"/>.(这个结果描述了subject是如何变化成为Query的) |
63 | ''' </summary> |
64 | ''' <returns></returns> |
65 | Public Property DistEdits As String |
66 | Public Property Path As Coordinate() |
67 | Public Property Matches As String |
68 | |
69 | Public Overrides Function ToString() As String |
70 | Return $"{Reference} => {Hypotheses} // {DistEdits}" |
71 | End Function |
72 | |
73 | Public Function IsPath(i As Integer, j As Integer) As Boolean |
74 | Dim pt As New Point With {.X = i, .Y = j} |
75 | Dim LQuery% = (From c As Coordinate |
76 | In Path |
77 | Where c = pt |
78 | Select 100).FirstOrDefault |
79 | Return LQuery > 50 |
80 | End Function |
81 | |
82 | Public ReadOnly Property Distance As Double |
83 | Get |
84 | If DistTable.IsNullOrEmpty Then |
85 | Return 0 |
86 | End If |
87 | |
88 | Dim reference As String = __getReference() |
89 | Dim hypotheses As String = __getSubject() |
90 | |
91 | Return DistTable(reference.Length) _ |
92 | .Values(hypotheses.Length) |
93 | End Get |
94 | End Property |
95 | |
96 | ''' <summary> |
97 | ''' 可以简单地使用这个数值来表述所比较的两个对象之间的相似度 |
98 | ''' </summary> |
99 | ''' <returns></returns> |
100 | Public ReadOnly Property Score As Double |
101 | Get |
102 | If String.IsNullOrEmpty(DistEdits) Then |
103 | Return 0 |
104 | End If |
105 | |
106 | Dim view As String = DistEdits.ToLower |
107 | Dim m As Integer = view.Count("m"c) |
108 | Dim i As Integer = view.Count("i"c) |
109 | Dim d As Integer = view.Count("d"c) |
110 | Dim s As Integer = view.Count("s"c) |
111 | Dim len As Integer = view.Length |
112 | |
113 | Return (m - (i * 0.5 + d * 0.3 + s * 0.2)) / len |
114 | End Get |
115 | End Property |
116 | |
117 | ''' <summary> |
118 | ''' ``m+`` scores.(0-1之间) |
119 | ''' </summary> |
120 | ''' <returns></returns> |
121 | Public ReadOnly Property MatchSimilarity As Double |
122 | Get |
123 | Dim ms As String() = Regex.Matches(DistEdits, "m+").ToArray |
124 | Dim mg = (From x In ms Select x Group x By x Into Count).ToArray |
125 | Dim len = DistEdits.Length |
126 | Dim score As Double |
127 | |
128 | For Each x In mg |
129 | score += (x.x.Length / len) * x.Count |
130 | Next |
131 | |
132 | Return score |
133 | End Get |
134 | End Property |
135 | |
136 | ''' <summary> |
137 | ''' 比对上的对象的数目 |
138 | ''' </summary> |
139 | ''' <returns></returns> |
140 | Public ReadOnly Property NumMatches As Integer |
141 | Get |
142 | If String.IsNullOrEmpty(DistEdits) Then |
143 | Return 0 |
144 | End If |
145 | |
146 | Dim view As String = DistEdits.ToLower |
147 | Dim m As Integer = view.Count("m"c) |
148 | Return m |
149 | End Get |
150 | End Property |
151 | |
152 | Public Function CopyTo(Of T As DistResult)(ByRef obj As T) As T |
153 | obj.Path = Path |
154 | obj.DistEdits = DistEdits |
155 | obj.DistTable = DistTable |
156 | obj.Hypotheses = Hypotheses |
157 | obj.Matches = Matches |
158 | obj.Reference = Reference |
159 | Return obj |
160 | End Function |
161 | |
162 | Public Function TrimMatrix(l As Integer) As Streams.Array.Double() |
163 | Me.DistTable = Me.DistTable _ |
164 | .Select(Function(row) |
165 | Dim values#() = row _ |
166 | .Values _ |
167 | .Select(Function(n) sys.Round(n, l)) _ |
168 | .ToArray |
169 | |
170 | Return New Streams.Array.Double With { |
171 | .Values = values |
172 | } |
173 | End Function) _ |
174 | .ToArray |
175 | |
176 | Return Me.DistTable |
177 | End Function |
178 | |
179 | Protected Friend Overridable Function __innerInsert() As String |
180 | Return "" |
181 | End Function |
182 | |
183 | Protected Friend Overridable Function __getReference() As String |
184 | Return Reference |
185 | End Function |
186 | |
187 | Protected Friend Overridable Function __getSubject() As String |
188 | Return Hypotheses |
189 | End Function |
190 | End Class |
191 | End Namespace |