I'm working with arule packages and I'm constantly trying to mine frequent itemsets in different datasets. But recently R kept returning the same error message : Error in eclat(txn, parameter = list(supp = 0.001)) : internal error in trio library Is just this particular dataset that gives me problems. Anyone has ever passed and fixed this error? Here are an example of the transaction data set: items 1 {001200-3, 004100-3, 004200-5, 004500-9, 004600-5} 2 {001524-K, 002100-2} 3 {00179, 03807, 08019, 09314, 12432} 4 {002000} 5 {002600-4, 002700-0} 6 {004115-F, 02/100073A, 02/630935A, 044.1567.0, 044.1567.0/I, 1010301FA, 1012015-400-0000, 1117285, 1118100-201-4020, 1118105-051-0000M, 173171, 1903628, 1903628/I, 1903629, 1903629/I, 1907566, 1907567, 1907570, 1907571, 1931018, 2.4419.340.0, 215420/N, 2654408-N, 2992242, 2992544, 2996416, 2VC-115561, 320/04133A, 4102AZL.14.100N00, 4110Z.14.30, 4625547, 477556, 477556/O, 478736, 478736/O, 500054655, 581/18096, 61000070005, 957E-6731 A, BF8T-6731 BA, BG2X-6731 CA, DBPN-6731 A, F2NN-6714 AB, LF16015, LF3000, LF3345, LF3346, LF3349, LF3806, LF4054, LF9009, RE504836, RE59754, T19044/I, TAE-115561, W-950/7, ZP520} 7 {005226, 012.0348.0, 012.0349.0, 02/910150A, 1105010E834N00, 1105020D354, 1117011-630-0000W, 1117025-621-0000, 1372444, 1393640, 1457434310001, 1521219, 1873018, 1901605, 1902134, 1902138, 1902138/I, 1907640, 1907640/I, 1908547, 1908547/I, 1930010, 19BG920-30001, 20430751, 20514654, 20976003/O, 20998367, 215460, 26560143, 26560201, 26560201/I, 2710806, 2992241, 2992241/I, 2992300, 2992662, 2992662/I, 2995711, 2997376, 2R0-127177, 2R0-127177 A, 2RD-127491, 32/401102, 32/912001A, 32/925423, 32/925760, 32/925869, 32/925915, 320/07155, 343144, 4102H.15.110, 4102H.15.110N00, 4102H.15.20, 500315480, 500315480/I, 500316868, 550228, 550228/N, 582042, 612630080011N00, 612630080087, 7146717, 8159975/O, 81BASE9200001, 98439681, AR50041, BC11320000N01, BF0X-9155 AA, BF5T-9155 AB, BF8T-9155 DA, DDN-99162 B, DONN-9N074 BG, E5HT-9155 CA, E7HN-9155 AA, FF42000, FF5421, FF5458, FF5488, FS1000, FS1015, FS1241, FS1242, FS1280, PSD460/1, PSD970/1, R28-30M, RC45MB, RE62418, RK120MBQ2, T22VA, WK-723} 8 {005227, 2641311, 2641371, 2641406, 2641725, 2641729, 2641808, 376518, 4757883, 72013, 72061, 8190393, 9986316, D8NN-9350 AA, DDN-9350, RE42211} 9 {0055, 0087, 0482, 0484, 0531, 11329, 8311} 10 {007.0762.0/40, 014.0428.0, 1114036, 1118369, 1118375, 1118376, 1118377, 1118379, 1305546, 1312934, 1677591, 1677592, 1677593, 2.1539.130.0, 2.1539.259.0, 20515059/C, 275092/C, 275636/C, 2RD-107124, 31358393-G, 3135X031, 3135X063, 4622074, 4622074/G, 4742199, 4742202, 4770623, 4803030/G, 500337911, 61316752, 61316793, 7114756, 8815939, 99435938, 99448192, 99467115, BF0X-6055 AA, BF0X-6055 AA/C, BF0X-6055 AA/CM, BF0X-6055 AA/M, BF8T-6055 AA, TAE-107125, TAF-107127, TE3-107125} 11 {008.4748.4, 026566T3, 1370794, 1393185, 1868005, 2UH-141025, 353430, 5016033/034, 5196807, 9959900, 9962518, E6NN-7563 AA, EONN-7563 BA, XC45-7563 BA/C/P, XC45-7563 CA} 12 {009.4749.3, 1865836, 2RD-141031, 3191991, 3610274, 42102093, 4999812/R, 525587/D, 887889, 96HU-7550 AA, 96HU-7550 AA/C, 97HU-7550 AA/C, AL33315, C7NN-7550 V, D1NN-7550 A, D5NN-7550 A, E6NN-7550 ABL} 13 {0118, VLF-3200, VLF-3202, VLF-3205} 14 {014.5259.0/10, 014.5260.0/10, 014.5261.0/10, 065.1450.0/30, 069.1450.0/30, 087.0050.0, 087.0050.6/10, 1367028/CL, 136750, 143810, 149300, 149340, 1725112, 1905560/KP, 1905961/62, 1905968/G, 1908819, 1930248, 2500617/K, 270789, 2830919, 2852012, 2852743, 2992642, 2R0-109287, 2R0-198015 C, 2TA-109289/4, 3092642, 3228362R1, 36811122, 36812349, 3681E006, 3681E037, 3681E046, 4690375, 500308780, 551528, 99477119, BF0X-6008 AA, BF5X-6008 D, BF5X-6008 D/4, BF5X-6020 C, BF5X-6L621 A, BG5X-6008 AA, BG5X-6008 BA, C7NN-6584 B, C7NN-6584 C, CFPN-6008 FKI, D4NN-6008 BG, D4NN-6008 BGI, D4NN-6710 A, DDN-6008 AM, DDN-6051 CG, EONN-6051 AA, EONN-6051 FA, EONN-6051 FAGG, R80241, R92425, RE38857, RE50978, TE6H-6008 B, TJG-109289, TJG-115441, U5LB1164, U5LT0065/016, U5LT0178} 15 {014.7994.4, 1448659, 1887506, 20709848, 20824906, 2VC-115105, 4705827, 479317, 4802609, 8193737, BF5T-6600 A, BF5X-6600 B, BG1X-6600 AA, C7NN-6A605 A, D3NN-6A820 F, D5NN-6600 DI, F1NN-9278 AA, R78202, TJG-117021} Thanks in advance. Alvaro. [[alternative HTML version deleted]]