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strengejacke committed Feb 29, 2024
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# report.brms

Code
report(model, verbose = FALSE)
Message
Start sampling
Chain 1 Informational Message: The current Metropolis proposal is about to be rejected because of the following issue:
Chain 1 Exception: normal_id_glm_lpdf: Scale vector is 0, but must be positive finite! (in 'C:/Users/DL/AppData/Local/Temp/RtmpERRA9z/model-12d437f47a61.stan', line 35, column 4 to column 62)
Chain 1 If this warning occurs sporadically, such as for highly constrained variable types like covariance matrices, then the sampler is fine,
Chain 1 but if this warning occurs often then your model may be either severely ill-conditioned or misspecified.
Chain 1
Chain 2 Informational Message: The current Metropolis proposal is about to be rejected because of the following issue:
Chain 2 Exception: normal_id_glm_lpdf: Scale vector is inf, but must be positive finite! (in 'C:/Users/DL/AppData/Local/Temp/RtmpERRA9z/model-12d437f47a61.stan', line 35, column 4 to column 62)
Chain 2 If this warning occurs sporadically, such as for highly constrained variable types like covariance matrices, then the sampler is fine,
Chain 2 but if this warning occurs often then your model may be either severely ill-conditioned or misspecified.
Chain 2
Chain 2 Informational Message: The current Metropolis proposal is about to be rejected because of the following issue:
Chain 2 Exception: normal_id_glm_lpdf: Scale vector is inf, but must be positive finite! (in 'C:/Users/DL/AppData/Local/Temp/RtmpERRA9z/model-12d437f47a61.stan', line 35, column 4 to column 62)
Chain 2 If this warning occurs sporadically, such as for highly constrained variable types like covariance matrices, then the sampler is fine,
Chain 2 but if this warning occurs often then your model may be either severely ill-conditioned or misspecified.
Chain 2
Chain 3 Informational Message: The current Metropolis proposal is about to be rejected because of the following issue:
Chain 3 Exception: normal_id_glm_lpdf: Scale vector is inf, but must be positive finite! (in 'C:/Users/DL/AppData/Local/Temp/RtmpERRA9z/model-12d437f47a61.stan', line 35, column 4 to column 62)
Chain 3 If this warning occurs sporadically, such as for highly constrained variable types like covariance matrices, then the sampler is fine,
Chain 3 but if this warning occurs often then your model may be either severely ill-conditioned or misspecified.
Chain 3
Chain 3 Informational Message: The current Metropolis proposal is about to be rejected because of the following issue:
Chain 3 Exception: normal_id_glm_lpdf: Scale vector is inf, but must be positive finite! (in 'C:/Users/DL/AppData/Local/Temp/RtmpERRA9z/model-12d437f47a61.stan', line 35, column 4 to column 62)
Chain 3 If this warning occurs sporadically, such as for highly constrained variable types like covariance matrices, then the sampler is fine,
Chain 3 but if this warning occurs often then your model may be either severely ill-conditioned or misspecified.
Chain 3
Chain 3 Informational Message: The current Metropolis proposal is about to be rejected because of the following issue:
Chain 3 Exception: normal_id_glm_lpdf: Scale vector is inf, but must be positive finite! (in 'C:/Users/DL/AppData/Local/Temp/RtmpERRA9z/model-12d437f47a61.stan', line 35, column 4 to column 62)
Chain 3 If this warning occurs sporadically, such as for highly constrained variable types like covariance matrices, then the sampler is fine,
Chain 3 but if this warning occurs often then your model may be either severely ill-conditioned or misspecified.
Chain 3
Chain 3 Informational Message: The current Metropolis proposal is about to be rejected because of the following issue:
Chain 3 Exception: normal_id_glm_lpdf: Scale vector is inf, but must be positive finite! (in 'C:/Users/DL/AppData/Local/Temp/RtmpERRA9z/model-12d437f47a61.stan', line 35, column 4 to column 62)
Chain 3 If this warning occurs sporadically, such as for highly constrained variable types like covariance matrices, then the sampler is fine,
Chain 3 but if this warning occurs often then your model may be either severely ill-conditioned or misspecified.
Chain 3
Output
We fitted a Bayesian linear model (estimated using MCMC sampling with 4 chains
of 300 iterations and a warmup of 150) to predict mpg with qsec and wt
(formula: mpg ~ qsec + wt). Priors over parameters were set as student_t
(location = 19.20, scale = 5.40) distributions. The model's explanatory power
is substantial (R2 = 0.82, 95% CI [0.75, 0.85], adj. R2 = 0.79). Within this
model:
- The effect of b Intercept (Median = 19.23, 95% CI [6.80, 31.02]) has a 99.67%
probability of being positive (> 0), 99.67% of being significant (> 0.30), and
99.33% of being large (> 1.81). The estimation successfully converged (Rhat =
0.999) but the indices are unreliable (ESS = 343)
- The effect of b qsec (Median = 0.95, 95% CI [0.41, 1.56]) has a 100.00%
probability of being positive (> 0), 99.17% of being significant (> 0.30), and
0.33% of being large (> 1.81). The estimation successfully converged (Rhat =
0.999) but the indices are unreliable (ESS = 345)
- The effect of b wt (Median = -5.02, 95% CI [-6.06, -4.09]) has a 100.00%
probability of being negative (< 0), 100.00% of being significant (< -0.30),
and 100.00% of being large (< -1.81). The estimation successfully converged
(Rhat = 0.999) but the indices are unreliable (ESS = 586)
Following the Sequential Effect eXistence and sIgnificance Testing (SEXIT)
framework, we report the median of the posterior distribution and its 95% CI
(Highest Density Interval), along the probability of direction (pd), the
probability of significance and the probability of being large. The thresholds
beyond which the effect is considered as significant (i.e., non-negligible) and
large are |0.30| and |1.81| (corresponding respectively to 0.05 and 0.30 of the
outcome's SD). Convergence and stability of the Bayesian sampling has been
assessed using R-hat, which should be below 1.01 (Vehtari et al., 2019), and
Effective Sample Size (ESS), which should be greater than 1000 (Burkner,
2017)., We fitted a Bayesian linear model (estimated using MCMC sampling with 4
chains of 300 iterations and a warmup of 150) to predict mpg with qsec and wt
(formula: mpg ~ qsec + wt). Priors over parameters were set as uniform
(location = , scale = ) distributions. The model's explanatory power is
substantial (R2 = 0.82, 95% CI [0.75, 0.85], adj. R2 = 0.79). Within this
model:
- The effect of b Intercept (Median = 19.23, 95% CI [6.80, 31.02]) has a 99.67%
probability of being positive (> 0), 99.67% of being significant (> 0.30), and
99.33% of being large (> 1.81). The estimation successfully converged (Rhat =
0.999) but the indices are unreliable (ESS = 343)
- The effect of b qsec (Median = 0.95, 95% CI [0.41, 1.56]) has a 100.00%
probability of being positive (> 0), 99.17% of being significant (> 0.30), and
0.33% of being large (> 1.81). The estimation successfully converged (Rhat =
0.999) but the indices are unreliable (ESS = 345)
- The effect of b wt (Median = -5.02, 95% CI [-6.06, -4.09]) has a 100.00%
probability of being negative (< 0), 100.00% of being significant (< -0.30),
and 100.00% of being large (< -1.81). The estimation successfully converged
(Rhat = 0.999) but the indices are unreliable (ESS = 586)
Following the Sequential Effect eXistence and sIgnificance Testing (SEXIT)
framework, we report the median of the posterior distribution and its 95% CI
(Highest Density Interval), along the probability of direction (pd), the
probability of significance and the probability of being large. The thresholds
beyond which the effect is considered as significant (i.e., non-negligible) and
large are |0.30| and |1.81| (corresponding respectively to 0.05 and 0.30 of the
outcome's SD). Convergence and stability of the Bayesian sampling has been
assessed using R-hat, which should be below 1.01 (Vehtari et al., 2019), and
Effective Sample Size (ESS), which should be greater than 1000 (Burkner,
2017)., We fitted a Bayesian linear model (estimated using MCMC sampling with 4
chains of 300 iterations and a warmup of 150) to predict mpg with qsec and wt
(formula: mpg ~ qsec + wt). Priors over parameters were set as uniform
(location = , scale = ) distributions. The model's explanatory power is
substantial (R2 = 0.82, 95% CI [0.75, 0.85], adj. R2 = 0.79). Within this
model:
- The effect of b Intercept (Median = 19.23, 95% CI [6.80, 31.02]) has a 99.67%
probability of being positive (> 0), 99.67% of being significant (> 0.30), and
99.33% of being large (> 1.81). The estimation successfully converged (Rhat =
0.999) but the indices are unreliable (ESS = 343)
- The effect of b qsec (Median = 0.95, 95% CI [0.41, 1.56]) has a 100.00%
probability of being positive (> 0), 99.17% of being significant (> 0.30), and
0.33% of being large (> 1.81). The estimation successfully converged (Rhat =
0.999) but the indices are unreliable (ESS = 345)
- The effect of b wt (Median = -5.02, 95% CI [-6.06, -4.09]) has a 100.00%
probability of being negative (< 0), 100.00% of being significant (< -0.30),
and 100.00% of being large (< -1.81). The estimation successfully converged
(Rhat = 0.999) but the indices are unreliable (ESS = 586)
Following the Sequential Effect eXistence and sIgnificance Testing (SEXIT)
framework, we report the median of the posterior distribution and its 95% CI
(Highest Density Interval), along the probability of direction (pd), the
probability of significance and the probability of being large. The thresholds
beyond which the effect is considered as significant (i.e., non-negligible) and
large are |0.30| and |1.81| (corresponding respectively to 0.05 and 0.30 of the
outcome's SD). Convergence and stability of the Bayesian sampling has been
assessed using R-hat, which should be below 1.01 (Vehtari et al., 2019), and
Effective Sample Size (ESS), which should be greater than 1000 (Burkner, 2017).
and We fitted a Bayesian linear model (estimated using MCMC sampling with 4
chains of 300 iterations and a warmup of 150) to predict mpg with qsec and wt
(formula: mpg ~ qsec + wt). Priors over parameters were set as student_t
(location = 0.00, scale = 5.40) distributions. The model's explanatory power is
substantial (R2 = 0.82, 95% CI [0.75, 0.85], adj. R2 = 0.79). Within this
model:
- The effect of b Intercept (Median = 19.23, 95% CI [6.80, 31.02]) has a 99.67%
probability of being positive (> 0), 99.67% of being significant (> 0.30), and
99.33% of being large (> 1.81). The estimation successfully converged (Rhat =
0.999) but the indices are unreliable (ESS = 343)
- The effect of b qsec (Median = 0.95, 95% CI [0.41, 1.56]) has a 100.00%
probability of being positive (> 0), 99.17% of being significant (> 0.30), and
0.33% of being large (> 1.81). The estimation successfully converged (Rhat =
0.999) but the indices are unreliable (ESS = 345)
- The effect of b wt (Median = -5.02, 95% CI [-6.06, -4.09]) has a 100.00%
probability of being negative (< 0), 100.00% of being significant (< -0.30),
and 100.00% of being large (< -1.81). The estimation successfully converged
(Rhat = 0.999) but the indices are unreliable (ESS = 586)
Following the Sequential Effect eXistence and sIgnificance Testing (SEXIT)
framework, we report the median of the posterior distribution and its 95% CI
(Highest Density Interval), along the probability of direction (pd), the
probability of significance and the probability of being large. The thresholds
beyond which the effect is considered as significant (i.e., non-negligible) and
large are |0.30| and |1.81| (corresponding respectively to 0.05 and 0.30 of the
outcome's SD). Convergence and stability of the Bayesian sampling has been
assessed using R-hat, which should be below 1.01 (Vehtari et al., 2019), and
Effective Sample Size (ESS), which should be greater than 1000 (Burkner, 2017).

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