相似度比较.......
我在做相似度比较，现在遇到两个问题：1.如果一篇文章全部是英文则计算结果为0
2.相似度计算结果不准确，两篇相同内容，相同路径的文章，结果不是100%？？？
--------------------编程问答-------------------- 你的相似的算法怎样的?
还有,路径是不是相同和文章内容相似度有关系的??? --------------------编程问答-------------------- public enum IFILTER_INIT : uint
{
NONE = 0,
CANON_PARAGRAPHS = 1,
HARD_LINE_BREAKS = 2,
CANON_HYPHENS = 4,
CANON_SPACES = 8,
APPLY_INDEX_ATTRIBUTES = 16,
APPLY_CRAWL_ATTRIBUTES = 256,
APPLY_OTHER_ATTRIBUTES = 32,
INDEXING_ONLY = 64,
SEARCH_LINKS = 128,
FILTER_OWNED_VALUE_OK = 512
}
public enum CHUNK_BREAKTYPE
{
CHUNK_NO_BREAK = 0,
CHUNK_EOW = 1,
CHUNK_EOS = 2,
CHUNK_EOP = 3,
CHUNK_EOC = 4
}
[Flags]
public enum CHUNKSTATE
{
CHUNK_TEXT = 0x1,
CHUNK_VALUE = 0x2,
CHUNK_FILTER_OWNED_VALUE = 0x4
}
[StructLayout(LayoutKind.Sequential)]
public struct PROPSPEC
{
public uint ulKind;
public uint propid;
public IntPtr lpwstr;
}
[StructLayout(LayoutKind.Sequential)]
public struct FULLPROPSPEC
{
public Guid guidPropSet;
public PROPSPEC psProperty;
}
[StructLayout(LayoutKind.Sequential)]
public struct STAT_CHUNK
{
public uint idChunk;
[MarshalAs(UnmanagedType.U4)]
public CHUNK_BREAKTYPE breakType;
[MarshalAs(UnmanagedType.U4)]
public CHUNKSTATE flags;
public uint locale;
[MarshalAs(UnmanagedType.Struct)] public FULLPROPSPEC attribute;
public uint idChunkSource;
public uint cwcStartSource;
public uint cwcLenSource;
}
[StructLayout(LayoutKind.Sequential)]
public struct FILTERREGION
{
public uint idChunk;
public uint cwcStart;
public uint cwcExtent;
}
[ComImport]
[Guid("89BCB740-6119-101A-BCB7-00DD010655AF")]
[Inte易做图ceType(ComInte易做图ceType.Inte易做图ceIsIUnknown)]
public inte易做图ce IFilter
{
void Init([MarshalAs(UnmanagedType.U4)] IFILTER_INIT grfFlags, uint cAttributes, [MarshalAs(UnmanagedType.LPArray, SizeParamIndex=1)] FULLPROPSPEC[] aAttributes, ref uint pdwFlags);
[PreserveSig] int GetChunk(out STAT_CHUNK pStat);
[PreserveSig] int GetText(ref uint pcwcBuffer, [MarshalAs(UnmanagedType.LPWStr)] StringBuilder buffer);
void GetValue(ref UIntPtr ppPropValue);
void BindRegion([MarshalAs(UnmanagedType.Struct)]FILTERREGION origPos, ref Guid riid, ref UIntPtr ppunk);
}
[ComImport]
[Guid("f07f3920-7b8c-11cf-9be8-00aa004b9986")]
public class CFilter
{
}
public class Constants
{
public const uint PID_STG_DIRECTORY =0x00000002;
public const uint PID_STG_CLASSID =0x00000003;
public const uint PID_STG_STORAGETYPE =0x00000004;
public const uint PID_STG_VOLUME_ID =0x00000005;
public const uint PID_STG_PARENT_WORKID =0x00000006;
public const uint PID_STG_SECONDARYSTORE =0x00000007;
public const uint PID_STG_FILEINDEX =0x00000008;
public const uint PID_STG_LASTCHANGEUSN =0x00000009;
public const uint PID_STG_NAME =0x0000000a;
public const uint PID_STG_PATH =0x0000000b;
public const uint PID_STG_SIZE =0x0000000c;
public const uint PID_STG_ATTRIBUTES =0x0000000d;
public const uint PID_STG_WRITETIME =0x0000000e;
public const uint PID_STG_CREATETIME =0x0000000f;
public const uint PID_STG_ACCESSTIME =0x00000010;
public const uint PID_STG_CHANGETIME =0x00000011;
public const uint PID_STG_CONTENTS =0x00000013;
public const uint PID_STG_SHORTNAME =0x00000014;
public const int FILTER_E_END_OF_CHUNKS =(unchecked((int)0x80041700));
public const int FILTER_E_NO_MORE_TEXT =(unchecked((int)0x80041701));
public const int FILTER_E_NO_MORE_VALUES =(unchecked((int)0x80041702));
public const int FILTER_E_NO_TEXT =(unchecked((int)0x80041705));
public const int FILTER_E_NO_VALUES =(unchecked((int)0x80041706));
public const int FILTER_S_LAST_TEXT =(unchecked((int)0x00041709));
}
/// <summary>
/// IFilter return codes
/// </summary>
public enum IFilterReturnCodes : uint
{
/// <summary>
/// Success
/// </summary>
S_OK = 0,
/// <summary>
/// The function was denied access to the filter file.
/// </summary>
E_ACCESSDENIED = 0x80070005,
/// <summary>
/// The function encountered an invalid handle, probably due to a low-memory situation.
/// </summary>
E_HANDLE = 0x80070006,
/// <summary>
/// The function received an invalid parameter.
/// </summary>
E_INVALIDARG = 0x80070057,
/// <summary>
/// Out of memory
/// </summary>
E_OUTOFMEMORY = 0x8007000E,
/// <summary>
/// Not implemented
/// </summary>
E_NOTIMPL = 0x80004001,
/// <summary>
/// Unknown error
/// </summary>
E_FAIL = 0x80000008,
/// <summary>
/// File not filtered due to password protection
/// </summary>
FILTER_E_PASSWORD = 0x8004170B,
/// <summary>
/// The document format is not recognised by the filter
/// </summary>
FILTER_E_UNKNOWNFORMAT = 0x8004170C,
/// <summary>
/// No text in current chunk
/// </summary>
FILTER_E_NO_TEXT = 0x80041705,
/// <summary>
/// No more chunks of text available in object
/// </summary>
FILTER_E_END_OF_CHUNKS = 0x80041700,
/// <summary>
/// No more text available in chunk
/// </summary>
FILTER_E_NO_MORE_TEXT = 0x80041701,
/// <summary>
/// No more property values available in chunk
/// </summary>
FILTER_E_NO_MORE_VALUES = 0x80041702,
/// <summary>
/// Unable to access object
/// </summary>
FILTER_E_ACCESS = 0x80041703,
/// <summary>
/// Moniker doesn't cover entire region
/// </summary>
FILTER_W_MONIKER_CLIPPED = 0x00041704,
/// <summary>
/// Unable to bind IFilter for embedded object
/// </summary>
FILTER_E_EMBEDDING_UNAVAILABLE = 0x80041707,
/// <summary>
/// Unable to bind IFilter for linked object
/// </summary>
FILTER_E_LINK_UNAVAILABLE = 0x80041708,
/// <summary>
/// This is the last text in the current chunk
/// </summary>
FILTER_S_LAST_TEXT = 0x00041709,
/// <summary>
/// This is the last value in the current chunk
/// </summary>
FILTER_S_LAST_VALUES = 0x0004170A
}
补充：.NET技术 , C#
