A key concept for understanding the tests used in logistic
multiple regression is that of a log likelihood. Usually,
though, overall significance is tested using Model Chisquare,
which is derived from the likelihood of observing
the actual data under the assumption that the model that
has been fitted is accurate. Table 2 contains the base model
results for the logistic regression analysis.
Using the multivariate logistic regression method, the
spatial relationship between landslide-occurrence location
and landslide-related factors was calculated. For the implementation
of the multivariate logistic regression method,
SPSS program was used for the calculation of the correlation
of landslide to each factor. First, all of the 10 factors that
were constructed in the spatial database were used. Then,
logistic multiple regression coefficients of the factors were
calculated (Table 2). The coefficients of the logistic multiple
regression model is estimated using the maximum-likelihood
method. In other words, the coefficients that make the
observed results most “likely” are selected. Since the relationship
between the independent variables and the probability
is nonlinear in the logistic multiple regression model,
an iterative algorithm was used for parametric estimation
(Dai and Lee, 2002). In Table 2, two types of correlation
can be seen; one is positive coefficients such as slope and
the second is negative coefficients such as curvature. After
calculating the logistic regression coefficients of the 10 landsliding
factors, formulae (3)–(5), were used for the landslide
hazard mapping for three test areas as shown below.
A key concept for understanding the tests used in logisticmultiple regression is that of a log likelihood. Usually,though, overall significance is tested using Model Chisquare,which is derived from the likelihood of observingthe actual data under the assumption that the model thathas been fitted is accurate. Table 2 contains the base modelresults for the logistic regression analysis.Using the multivariate logistic regression method, thespatial relationship between landslide-occurrence locationand landslide-related factors was calculated. For the implementationof the multivariate logistic regression method,SPSS program was used for the calculation of the correlationof landslide to each factor. First, all of the 10 factors thatwere constructed in the spatial database were used. Then,logistic multiple regression coefficients of the factors werecalculated (Table 2). The coefficients of the logistic multipleregression model is estimated using the maximum-likelihoodmethod. In other words, the coefficients that make theobserved results most “likely” are selected. Since the relationshipbetween the independent variables and the probabilityis nonlinear in the logistic multiple regression model,an iterative algorithm was used for parametric estimation(Dai and Lee, 2002). In Table 2, two types of correlationcan be seen; one is positive coefficients such as slope andthe second is negative coefficients such as curvature. Afterการคำนวณสัมประสิทธิ์ถดถอยโลจิสติก 10 landslidingปัจจัย สูตร (3)–(5) ใช้สำหรับดินถล่มอันตรายการแม็ปสำหรับสามทดสอบพื้นที่ดังต่อไปนี้
การแปล กรุณารอสักครู่..
