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Root mean square deviation

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102: 49: 1503:(MAE) instead of the root mean square deviation. MAE possesses advantages in interpretability over RMSD. MAE is the average of the absolute values of the errors. MAE is fundamentally easier to understand than the square root of the average of squared errors. Furthermore, each error influences MAE in direct proportion to the absolute value of the error, which is not the case for RMSD. 1649:, normalized root mean square deviation (NRMSD), coefficient of variation (CV), and percent RMS are used to quantify the uniformity of flow behavior such as velocity profile, temperature distribution, or gas species concentration. The value is compared to industry standards to optimize the design of flow and thermal equipment and processes. 406: 202:
RMSD is always non-negative, and a value of 0 (almost never achieved in practice) would indicate a perfect fit to the data. In general, a lower RMSD is better than a higher one. However, comparisons across different types of data would be invalid because the measure is dependent on the scale of the
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Normalizing the RMSD facilitates the comparison between datasets or models with different scales. Though there is no consistent means of normalization in the literature, common choices are the mean or the range (defined as the maximum value minus the minimum value) of the measured data:
195:(or prediction errors) when computed out-of-sample (aka on the full set, referencing a true value rather than an estimate). The RMSD serves to aggregate the magnitudes of the errors in predictions for various data points into a single measure of predictive power. RMSD is a measure of 763: 206:
RMSD is the square root of the average of squared errors. The effect of each error on RMSD is proportional to the size of the squared error; thus larger errors have a disproportionately large effect on RMSD. Consequently, RMSD is sensitive to
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In some disciplines, the RMSD is used to compare differences between two things that may vary, neither of which is accepted as the "standard". For example, when measuring the average difference between two time series
1489: 1122: 1224: 1979: 1699: 1390: 1333: 254: 1276: 2020: 609: 665: 864: 856: 823: 401:{\displaystyle \operatorname {RMSD} ({\hat {\theta }})={\sqrt {\operatorname {MSE} ({\hat {\theta }})}}={\sqrt {\operatorname {E} (({\hat {\theta }}-\theta )^{2})}}.} 274: 649: 480: 472: 161:) is either one of two closely related and frequently used measures of the differences between true or predicted values on the one hand and observed values or an 2350: 191:
when the calculations are performed over the data sample that was used for estimation (and are therefore always in reference to an estimate) and are called
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ANSI/BPI-2400-S-2012: Standard Practice for Standardized Qualification of Whole-House Energy Savings Predictions by Calibration to Energy Use History
982: 1144:. In many cases, especially for smaller samples, the sample range is likely to be affected by the size of sample which would hamper comparisons. 1611: 1532: 31: 1417: 2415: 1817:
Willmott, Cort; Matsuura, Kenji (2006). "On the use of dimensioned measures of error to evaluate the performance of spatial interpolators".
2006: 2149: 1062: 1157: 17: 1635:, RMSD (and RMSZ) is used to measure the deviation of the molecular internal coordinates deviate from the restraints library values. 2056: 1881: 2164: 1575:, the RMSD is used to assess how well mathematical or computational models of behavior explain the empirically observed behavior. 199:, to compare forecasting errors of different models for a particular dataset and not between datasets, as it is scale-dependent. 125: 1151:(IQR). When dividing the RMSD with the IQR the normalized value gets less sensitive for extreme values in the target variable. 1136:(NRMSD or NRMSE), and often expressed as a percentage, where lower values indicate less residual variance. This is also called 73: 68: 2410: 1689: 187: 118: 1903: 2154: 1624:
In the simulation of energy consumption of buildings, the RMSE and CV(RMSE) are used to calibrate models to measured
1338: 1284: 2376: 2237: 2061: 2071: 1600:, a measure used to assess how well a method to reconstruct an image performs relative to the original image. 2327: 2086: 1536: 2293: 2222: 2159: 88: 78: 2106: 2081: 2066: 1669: 1604: 1597: 1147:
Another possible method to make the RMSD a more useful comparison measure is to divide the RMSD by the
83: 1769:"Components of information for multiple resolution comparison between maps that share a real variable" 230: 2096: 2091: 1229: 758:{\displaystyle \operatorname {RMSD} ={\sqrt {\frac {\sum _{t=1}^{T}(y_{t}-{\hat {y}}_{t})^{2}}{T}}}.} 1733: 578: 2192: 1923: 1694: 1550: 1404: 1137: 2283: 2187: 2182: 1572: 960:{\displaystyle \operatorname {RMSD} ={\sqrt {\frac {\sum _{t=1}^{T}(x_{1,t}-x_{2,t})^{2}}{T}}}.} 2124: 1918: 1728: 1679: 196: 1968: 564:{\displaystyle \operatorname {RMSD} ={\sqrt {{\frac {1}{n}}\sum _{i=1}^{n}(X_{i}-x_{0})^{2}}}} 1674: 1632: 1614:, the RMSD is used as a measure to estimate the quality of the obtained bundle of structures. 1582:, the RMSD is one measure used to assess the accuracy of spatial analysis and remote sensing. 828: 795: 259: 182: 174: 63: 58: 624: 2345: 2245: 2134: 2129: 1826: 1783: 1719:
Hyndman, Rob J.; Koehler, Anne B. (2006). "Another look at measures of forecast accuracy".
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In control theory, the RMSE is used as a quality measure to evaluate the performance of a
8: 2051: 2038: 1664: 1554: 1546: 1500: 1148: 616: 93: 1830: 1787: 2371: 2337: 2217: 2046: 1936: 1842: 1799: 1746: 1684: 1565: 1549:, the RMSD is a measure of the difference between a crystal conformation of the ligand 1408: 659:
different predictions as the square root of the mean of the squares of the deviations:
619: 420: 412: 277: 106: 1998: 2366: 2255: 2202: 1932: 1742: 1393: 101: 1990: 1940: 1846: 1803: 1750: 48: 2389: 2174: 2139: 2076: 2029: 1928: 1834: 1791: 1738: 1659: 1568:. Some experts have argued that RMSD is less reliable than Relative Absolute Error. 1904:"Error Measures For Generalizing About Forecasting Methods: Empirical Comparisons" 2322: 2265: 2144: 1593: 1860: 1646: 1639: 1528: 1052:{\displaystyle \mathrm {NRMSD} ={\frac {\mathrm {RMSD} }{y_{\max }-y_{\min }}}} 178: 1838: 1795: 2404: 2207: 1621:
were judged using the RMSD from the test dataset's undisclosed "true" values.
1618: 1589:, RMSD and NRMSD are used to evaluate the calibration of a groundwater model. 1586: 1517: 1513: 181:
of the differences between the observed values and predicted ones. These
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Applied Groundwater Modeling: Simulation of Flow and Advective Transport
1484:{\displaystyle \mathrm {CV(RMSD)} ={\frac {\mathrm {RMSD} }{\bar {y}}}.} 2301: 2212: 2197: 1521: 40: 2119: 1561: 225: 162: 1607:, the RMSD is used to assess how well a system learns a given model. 1117:{\displaystyle \mathrm {NRMSD} ={\frac {\mathrm {RMSD} }{\bar {y}}}} 1539: 416: 2227: 2114: 1399:
When normalizing by the mean value of the measurements, the term
1219:{\displaystyle \mathrm {RMSDIQR} ={\frac {\mathrm {RMSD} }{IQR}}} 208: 1564:, the RMSD is used to determine whether an economic model fits 1535:
is the measure of the average distance between the atoms of
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Pontius, Robert; Thontteh, Olufunmilayo; Chen, Hao (2008).
1861:"Coastal Inlets Research Program (CIRP) Wiki - Statistics" 1819:
International Journal of Geographical Information Science
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may be used to avoid ambiguity. This is analogous to the
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(1992). 256:with respect to an estimated parameter 14: 2403: 1494: 1407:with the RMSD taking the place of the 2002: 1130:normalized root mean square deviation 415:, the RMSD is the square root of the 276:is defined as the square root of the 2416:Statistical deviation and dispersion 1911:International Journal of Forecasting 1762: 1760: 1721:International Journal of Forecasting 30:For the bioinformatics concept, see 1776:Environmental Ecological Statistics 1700:Normalized estimation error squared 1520:model predicts the behavior of the 168: 24: 1690:Errors and residuals in statistics 1462: 1459: 1456: 1453: 1440: 1437: 1434: 1431: 1425: 1422: 1199: 1196: 1193: 1190: 1180: 1177: 1174: 1171: 1168: 1165: 1162: 1098: 1095: 1092: 1089: 1079: 1076: 1073: 1070: 1067: 1018: 1015: 1012: 1009: 999: 996: 993: 990: 987: 350: 25: 2427: 1757: 474:, then the RMSD of the sample is 1743:10.1016/j.ijforecast.2006.03.001 970: 249:{\displaystyle {\hat {\theta }}} 100: 2377:Pearson correlation coefficient 1984: 1958:(2nd ed.). Academic Press. 1506: 1271:{\displaystyle IQR=Q_{3}-Q_{1}} 1973: 1962: 1947: 1895: 1874: 1853: 1810: 1712: 1471: 1443: 1428: 1376: 1370: 1322: 1316: 1107: 938: 899: 736: 723: 700: 604:{\displaystyle {\hat {y}}_{t}} 589: 550: 523: 390: 381: 368: 359: 356: 340: 334: 325: 311: 305: 296: 240: 13: 1: 2316:Deep Learning Related Metrics 1969:Ensemble Neural Network Model 1705: 651:with variables observed over 575:The RMSD of predicted values 2411:Point estimation performance 1933:10.1016/0169-2070(92)90008-w 219: 7: 2160:Sensitivity and specificity 1653: 1547:structure based drug design 1516:, to see how effectively a 214: 10: 2432: 1670:Average absolute deviation 1605:computational neuroscience 1598:peak signal-to-noise ratio 1596:, the RMSD is part of the 426: 147:root mean square deviation 29: 18:Root-mean-square deviation 2385: 2359: 2336: 2315: 2292: 2264: 2236: 2173: 2105: 2037: 1839:10.1080/13658810500286976 1796:10.1007/s10651-007-0043-y 1695:Coefficient of Variation 1405:coefficient of variation 1138:Coefficient of Variation 2188:Calinski-Harabasz index 1573:experimental psychology 851:{\displaystyle x_{2,t}} 818:{\displaystyle x_{1,t}} 655:times, is computed for 269:{\displaystyle \theta } 1680:Mean squared deviation 1485: 1386: 1329: 1272: 1220: 1118: 1053: 961: 898: 858:, the formula becomes 852: 819: 759: 699: 645: 644:{\displaystyle y_{t},} 605: 565: 522: 468: 402: 270: 250: 155:root mean square error 107:Mathematics portal 2351:Intra-list Similarity 1675:Mean signed deviation 1633:X-ray crystallography 1486: 1387: 1330: 1273: 1221: 1119: 1054: 962: 878: 853: 820: 760: 679: 646: 606: 566: 502: 469: 467:{\displaystyle x_{0}} 403: 271: 251: 1626:building performance 1617:Submissions for the 1418: 1339: 1285: 1230: 1158: 1063: 983: 865: 829: 796: 770:cross-sectional data 768:(For regressions on 666: 625: 579: 481: 451: 287: 260: 231: 1831:2006IJGIS..20...89W 1788:2008EnvES..15..111P 1665:Mean absolute error 1566:economic indicators 1501:mean absolute error 1495:Mean absolute error 1149:interquartile range 27:Statistical measure 2372:Euclidean distance 2338:Recommender system 2218:Similarity measure 2032:evaluation metrics 1685:Squared deviations 1481: 1409:standard deviation 1382: 1325: 1268: 1216: 1114: 1049: 957: 848: 815: 755: 641: 620:dependent variable 601: 561: 464: 421:standard deviation 413:unbiased estimator 398: 278:mean squared error 266: 246: 2398: 2397: 2367:Cosine similarity 2203:Hopkins statistic 1476: 1474: 1394:quantile function 1392:where CDF is the 1359: 1305: 1214: 1112: 1110: 1047: 952: 951: 750: 749: 726: 592: 559: 500: 393: 371: 343: 337: 308: 243: 143: 142: 16:(Redirected from 2423: 2390:Confusion matrix 2165:Logarithmic Loss 2030:Machine learning 2023: 2016: 2009: 2000: 1999: 1993: 1988: 1982: 1977: 1971: 1966: 1960: 1959: 1951: 1945: 1944: 1926: 1908: 1899: 1893: 1892: 1890: 1888: 1878: 1872: 1871: 1869: 1867: 1857: 1851: 1850: 1814: 1808: 1807: 1773: 1764: 1755: 1754: 1736: 1716: 1660:Root mean square 1490: 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244: 236: 169:RMSD of a sample 135: 128: 121: 105: 104: 51: 37: 36: 21: 2431: 2430: 2426: 2425: 2424: 2422: 2421: 2420: 2401: 2400: 2399: 2394: 2381: 2355: 2332: 2323:Inception score 2311: 2288: 2266:Computer Vision 2260: 2232: 2169: 2101: 2033: 2027: 1997: 1996: 1989: 1985: 1978: 1974: 1967: 1963: 1952: 1948: 1906: 1900: 1896: 1886: 1884: 1880: 1879: 1875: 1865: 1863: 1859: 1858: 1854: 1815: 1811: 1771: 1765: 1758: 1734:10.1.1.154.9771 1717: 1713: 1708: 1656: 1594:imaging science 1509: 1497: 1466: 1452: 1450: 1421: 1419: 1416: 1415: 1361: 1356: 1355: 1346: 1342: 1340: 1337: 1336: 1307: 1302: 1301: 1292: 1288: 1286: 1283: 1282: 1262: 1258: 1249: 1245: 1231: 1228: 1227: 1203: 1189: 1187: 1161: 1159: 1156: 1155: 1102: 1088: 1086: 1066: 1064: 1061: 1060: 1040: 1036: 1027: 1023: 1022: 1008: 1006: 986: 984: 981: 980: 973: 941: 937: 925: 921: 906: 902: 893: 882: 877: 874: 866: 863: 862: 836: 832: 830: 827: 826: 803: 799: 797: 794: 793: 784:is replaced by 776:is replaced by 739: 735: 729: 718: 717: 716: 707: 703: 694: 683: 678: 675: 667: 664: 663: 632: 628: 626: 623: 622: 595: 584: 583: 582: 580: 577: 576: 553: 549: 543: 539: 530: 526: 517: 506: 492: 490: 482: 479: 478: 458: 454: 452: 449: 448: 444: 438: 432: 429: 419:, known as the 384: 380: 363: 362: 348: 329: 328: 317: 300: 299: 288: 285: 284: 261: 258: 257: 235: 234: 232: 229: 228: 224:The RMSD of an 222: 217: 171: 139: 99: 98: 84:Lists of topics 35: 28: 23: 22: 15: 12: 11: 5: 2429: 2419: 2418: 2413: 2396: 2395: 2393: 2392: 2386: 2383: 2382: 2380: 2379: 2374: 2369: 2363: 2361: 2357: 2356: 2354: 2353: 2348: 2342: 2340: 2334: 2333: 2331: 2330: 2325: 2319: 2317: 2313: 2312: 2310: 2309: 2304: 2298: 2296: 2290: 2289: 2287: 2286: 2281: 2276: 2270: 2268: 2262: 2261: 2259: 2258: 2253: 2248: 2242: 2240: 2234: 2233: 2231: 2230: 2225: 2220: 2215: 2210: 2205: 2200: 2195: 2193:Davies-Bouldin 2190: 2185: 2179: 2177: 2171: 2170: 2168: 2167: 2162: 2157: 2152: 2147: 2142: 2137: 2132: 2127: 2122: 2117: 2111: 2109: 2107:Classification 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Retrieved 1855: 1822: 1818: 1812: 1779: 1775: 1724: 1720: 1714: 1587:hydrogeology 1551:conformation 1537:superimposed 1518:mathematical 1507:Applications 1498: 1400: 1398: 1280: 1146: 1141: 1133: 1129: 1127: 974: 790: 785: 781: 777: 773: 767: 656: 652: 617:regression's 612: 574: 440: 433: 430: 410: 223: 205: 201: 192: 186: 172: 158: 154: 150: 146: 144: 1887:19 February 1557:prediction. 1514:meteorology 1142:Percent RMS 185:are called 2405:Categories 2360:Similarity 2302:Perplexity 2213:Rand index 2198:Dunn index 2183:Silhouette 2175:Clustering 2039:Regression 1866:4 February 1706:References 1522:atmosphere 611:for times 183:deviations 41:Statistics 2130:Precision 2082:RMSE/RMSD 1919:CiteSeerX 1729:CiteSeerX 1562:economics 1472:¯ 1363:− 1309:− 1256:− 1108:¯ 1034:− 919:− 880:∑ 724:^ 714:− 681:∑ 590:^ 537:− 504:∑ 378:θ 375:− 369:^ 366:θ 354:⁡ 335:^ 332:θ 323:⁡ 306:^ 303:θ 294:⁡ 264:θ 241:^ 238:θ 226:estimator 220:Estimator 188:residuals 163:estimator 2346:Coverage 2125:Accuracy 1941:11034360 1847:15407960 1804:21427573 1751:15947215 1654:See also 1540:proteins 417:variance 215:Formulas 209:outliers 197:accuracy 94:Category 89:Articles 79:Journals 74:Notation 69:Glossary 2238:Ranking 2228:SimHash 2115:F-score 1827:Bibcode 1784:Bibcode 1555:docking 439:, ..., 427:Samples 411:For an 177:is the 59:Outline 2135:Recall 1939:  1921:  1845:  1802:  1749:  1731:  1553:and a 1531:, the 1226:where 193:errors 175:sample 2140:Kappa 2057:sMAPE 1937:S2CID 1907:(PDF) 1843:S2CID 1800:S2CID 1772:(PDF) 1747:S2CID 1281:with 1134:error 615:of a 153:) or 2307:BLEU 2279:SSIM 2274:PSNR 2251:NDCG 2072:MSPE 2067:MASE 2062:MAPE 1889:2019 1868:2015 1374:0.75 1335:and 1320:0.25 869:RMSD 825:and 780:and 670:RMSD 485:RMSD 291:RMSD 159:RMSE 151:RMSD 145:The 2328:FID 2294:NLP 2284:IoU 2246:MRR 2223:SMC 2155:ROC 2150:AUC 2145:MCC 2097:MAD 2092:MDA 2077:RMS 2052:MAE 2047:MSE 1929:doi 1835:doi 1792:doi 1739:doi 1645:In 1631:In 1610:In 1603:In 1592:In 1585:In 1580:GIS 1578:In 1571:In 1560:In 1545:In 1527:In 1512:In 1358:CDF 1304:CDF 1140:or 1132:or 1059:or 1042:min 1029:max 788:.) 431:If 320:MSE 2407:: 2256:AP 2120:P4 1935:. 1927:. 1913:. 1909:. 1841:. 1833:. 1823:20 1821:. 1798:. 1790:. 1780:15 1778:. 1774:. 1759:^ 1745:. 1737:. 1725:22 1723:. 1411:. 1396:. 423:. 280:: 211:. 2087:R 2022:e 2015:t 2008:v 1943:. 1931:: 1915:8 1891:. 1870:. 1849:. 1837:: 1829:: 1806:. 1794:: 1786:: 1753:. 1741:: 1642:. 1628:. 1542:. 1524:. 1479:. 1469:y 1463:D 1460:S 1457:M 1454:R 1448:= 1444:) 1441:D 1438:S 1435:M 1432:R 1429:( 1426:V 1423:C 1380:, 1377:) 1371:( 1366:1 1353:= 1348:3 1344:Q 1323:) 1317:( 1312:1 1299:= 1294:1 1290:Q 1264:1 1260:Q 1251:3 1247:Q 1243:= 1240:R 1237:Q 1234:I 1211:R 1208:Q 1205:I 1200:D 1197:S 1194:M 1191:R 1185:= 1181:R 1178:Q 1175:I 1172:D 1169:S 1166:M 1163:R 1124:. 1105:y 1099:D 1096:S 1093:M 1090:R 1084:= 1080:D 1077:S 1074:M 1071:R 1068:N 1038:y 1025:y 1019:D 1016:S 1013:M 1010:R 1004:= 1000:D 997:S 994:M 991:R 988:N 955:. 949:T 943:2 939:) 933:t 930:, 927:2 923:x 914:t 911:, 908:1 904:x 900:( 895:T 890:1 887:= 884:t 872:= 844:t 841:, 838:2 834:x 811:t 808:, 805:1 801:x 786:n 782:T 778:i 774:t 753:. 747:T 741:2 737:) 731:t 721:y 709:t 705:y 701:( 696:T 691:1 688:= 685:t 673:= 657:T 653:T 639:, 634:t 630:y 613:t 597:t 587:y 571:. 555:2 551:) 545:0 541:x 532:i 528:X 524:( 519:n 514:1 511:= 508:i 498:n 495:1 488:= 460:0 456:x 443:n 441:X 437:1 434:X 396:. 391:) 386:2 382:) 360:( 357:( 351:E 346:= 341:) 326:( 315:= 312:) 297:( 157:( 149:( 134:e 127:t 120:v 34:. 20:)

Index

Root-mean-square deviation
Root mean square deviation of atomic positions
Statistics

Outline
Statisticians
Glossary
Notation
Journals
Lists of topics
Articles
Category
icon
Mathematics portal
v
t
e
estimator
sample
quadratic mean
deviations
residuals
accuracy
outliers
estimator
mean squared error
unbiased estimator
variance
standard deviation
regression's

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