Class OpenSimilarity

java.lang.Object

cloud.opencode.base.string.similarity.OpenSimilarity

public final class OpenSimilarity
extends Object

String Similarity Facade - Unified entry point for string similarity calculations. 字符串相似度门面 - 字符串相似度计算的统一入口。

Features | 主要功能:

• Levenshtein distance and similarity - Levenshtein距离和相似度
• Jaccard similarity with configurable N-gram - Jaccard相似度可配置N-gram
• Cosine similarity - 余弦相似度
• Jaro-Winkler similarity - Jaro-Winkler相似度

Usage Examples | 使用示例:

double lev = OpenSimilarity.levenshteinSimilarity("hello", "hallo");
double jac = OpenSimilarity.jaccardSimilarity("abc", "abd");
double cos = OpenSimilarity.cosineSimilarity("hello world", "hello java");

Security | 安全性:

• Thread-safe: Yes (stateless utility) - 线程安全: 是（无状态工具类）
• Null-safe: Partial (depends on algorithm) - 空值安全: 部分（取决于算法）

Since:

JDK 25, opencode-base-string V1.0.0

Author:

Leon Soo www.LeonSoo.com

See Also:

• OpenCode.cloud

Method Summary

Modifier and Type	Method	Description
static double	cosineSimilarity(String s1, String s2)
static String	findMostSimilar(String target, List<String> candidates)
static List<String>	findSimilar(String target, List<String> candidates, double threshold)
static boolean	isSimilar(String s1, String s2, double threshold)
static double	jaccardSimilarity(String s1, String s2)
static double	jaccardSimilarity(String s1, String s2, int nGram)
static double	jaroWinklerSimilarity(String s1, String s2)
static int	levenshteinDistance(String s1, String s2)
static double	levenshteinSimilarity(String s1, String s2)
static int	longestCommonSubsequence(String s1, String s2)
static int	longestCommonSubstring(String s1, String s2)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

levenshteinDistance

public static int levenshteinDistance(String s1,
 String s2)

levenshteinSimilarity

public static double levenshteinSimilarity(String s1,
 String s2)

jaccardSimilarity

public static double jaccardSimilarity(String s1,
 String s2)

jaccardSimilarity

public static double jaccardSimilarity(String s1,
 String s2,
 int nGram)

cosineSimilarity

public static double cosineSimilarity(String s1,
 String s2)

jaroWinklerSimilarity

public static double jaroWinklerSimilarity(String s1,
 String s2)

longestCommonSubsequence

public static int longestCommonSubsequence(String s1,
 String s2)

longestCommonSubstring

public static int longestCommonSubstring(String s1,
 String s2)

isSimilar

public static boolean isSimilar(String s1,
 String s2,
 double threshold)

findMostSimilar

public static String findMostSimilar(String target,
 List<String> candidates)

findSimilar

public static List<String> findSimilar(String target,
 List<String> candidates,
 double threshold)