# \#regularization

**URL:** https://discourse.mc-stan.org/tag/regularization/123.md

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## [Priors set up: Combine horseshoe prior with knowledge about noise in response variable](https://discourse.mc-stan.org/t/priors-set-up-combine-horseshoe-prior-with-knowledge-about-noise-in-response-variable/33031)

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**Author:** [@dafanast](https://discourse.mc-stan.org/u/dafanast)\
**Replies:** 4\
**Last updated:** [October 25, 2023, 4:18pm UTC](https://discourse.mc-stan.org/t/priors-set-up-combine-horseshoe-prior-with-knowledge-about-noise-in-response-variable/33031 "2023-10-25T16:18:24Z")

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I want to estimate age as an outcome variable and my predictors are values of genomic DNA methylation. The structure of the dataset is 95 samples (73 for training) and thousands (\>160.000) of genomic DNA methylation data…

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## [Divergent transitions after warmup for logistic regression model with horseshoe priors](https://discourse.mc-stan.org/t/divergent-transitions-after-warmup-for-logistic-regression-model-with-horseshoe-priors/18231)

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**Author:** [@dhanur88](https://discourse.mc-stan.org/u/dhanur88)\
**Replies:** 2\
**Last updated:** [October 5, 2020, 8:03am UTC](https://discourse.mc-stan.org/t/divergent-transitions-after-warmup-for-logistic-regression-model-with-horseshoe-priors/18231 "2020-10-05T08:03:51Z")

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Hello everyone, I am trying to fit a logistic regression model with horseshoe regularization priors. I ran the model without any error. However I am getting some warning messages. This is the stan model I ran, data …

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## [Generalized / Fused Lasso](https://discourse.mc-stan.org/t/generalized-fused-lasso/18174)

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**Author:** [@potterzot](https://discourse.mc-stan.org/u/potterzot)\
**Replies:** 2\
**Last updated:** [September 25, 2020, 5:40pm UTC](https://discourse.mc-stan.org/t/generalized-fused-lasso/18174 "2020-09-25T17:40:01Z")

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Hi everyone - I’m hoping to estimate a fused lasso using STAN as an alternative to genlasso. My covariates consist of time spent at each degree of temperature, so that variables are in a sense ordered. Fused Lasso (pdf l…

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## [How to extent (regularized) horseshoe prior to multiple outcome setting?](https://discourse.mc-stan.org/t/how-to-extent-regularized-horseshoe-prior-to-multiple-outcome-setting/13828)

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**Author:** [@Dirk\_B](https://discourse.mc-stan.org/u/Dirk_B)\
**Replies:** 28\
**Last updated:** [May 8, 2020, 5:11am UTC](https://discourse.mc-stan.org/t/how-to-extent-regularized-horseshoe-prior-to-multiple-outcome-setting/13828 "2020-05-08T05:11:23Z")

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Hi everyone, we try to build a linear regression model with three outcomes but we have a problem with including the (regularized) horseshoe prior. There is no problem with incorporating the horseshoe prior for the univ…

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## [Impact of the par\_ratio option of the horseshoe prior](https://discourse.mc-stan.org/t/impact-of-the-par-ratio-option-of-the-horseshoe-prior/14335)

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**Author:** [@bayesian\_newbie](https://discourse.mc-stan.org/u/bayesian_newbie)\
**Replies:** 3\
**Last updated:** [April 27, 2020, 6:53am UTC](https://discourse.mc-stan.org/t/impact-of-the-par-ratio-option-of-the-horseshoe-prior/14335 "2020-04-27T06:53:59Z")

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Hi, I have a question with respect to the specification of the horseshoe prior. If I set the par\_ratio option to a specific value X = expected number of non-zero coefficients to zero coefficients, will this force the m…