Update README.md

README.md

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 license: mit
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-This is the evaluation benchmark of [LLM4Decompile](https://github.com/albertan017/LLM4Decompile) project.
+This is the evaluation benchmark of [LLM4Decompile](https://github.com/albertan017/LLM4Decompile) project.
+
+## About
+* **Decompile-Bench-Eval** includes manually crafted binaries from the well-established HumanEval and MBPP, alongside the compiled GitHub repositories released after 2025 to mitigate data leakage issues.
+* **C and C++ Support:** These datasets include both **C** and **C++** source code, whereas earlier models (LLM4Decompile-V1.5, V2) and the HumanEval-Decompile dataset were limited to C only.
+
+## Columns
+It contains three splits, huameval, mbpp, and github2025. We also provide a [json verison](https://github.com/albertan017/LLM4Decompile/tree/main/decompile-bench/data) for the data.
+They contains the following columns:
+```
+{
+"index":"index of the function", 
+"func_name":"demangled name for he function", 
+"func_dep":"function dependecies (includes, help functions), or the path to the source code", 
+"func":"source code", 
+"test":"unit tests for the function, empty for github data", 
+"opt":"optimization, O0, O1, O2, O3", 
+"language":"language, c or cpp", 
+"asm":"assembly", 
+"ida_asm":"assembly from ida pro", 
+"ida_pseudo":"decompiled results (pseudo code) from ida pro", 
+"ghidra_asm":"assembly from ghidra", 
+"ghidra_pseudo":"decompiled results (pseudo code) from ghidra"
+}
+```
+
+## Others
+For more details, please check [LLM4Decompile](https://github.com/albertan017/LLM4Decompile) project.