diff --git a/analysis/data_stat.py b/analysis/data_stat.py
index 095eace..4758a69 100644
--- a/analysis/data_stat.py
+++ b/analysis/data_stat.py
@@ -12,7 +12,9 @@ class Stat(Enum):
 
     SOLVER = 'solver'
 
+    MATRIX_TYPE = 'matrix type'
     MATRIX_FILE = 'matrix file'
+    MATRIX_FORMAT = 'matrix format'
     MATRIX_SHAPE = 'matrix shape'
     MATRIX_SIZE = 'matrix size'
     MATRIX_NNZ = 'matrix nnz'
@@ -65,6 +67,10 @@ class Stat(Enum):
     L2D_CACHE_MISS_RATE = 'L2D cache miss rate'
     LL_CACHE_MISS_RATE = 'LL cache miss rate'
 
+class MatrixType(Enum):
+    SUITESPARSE = 'SuiteSparse'
+    SYNTHETIC = 'synthetic'
+
 class Format(Enum):
     CSR = 'csr'
     COO = 'coo'