BayesFusion Support Forum

any replay would be appreciated!

hello ^_^ i'm using DBN for language modelling; recently i've known that to test language model we have to test something called perlexity http://en.wikipedia.org/wiki/Perplexity : which measures the how predictive is the model for sequence of words?i've read about annealed map .is it the one? my wo...

hello !
when making validation (for unrolled DBN)for target node say A_2 at time= t2;A can have values {a1,a2,...,an}. for A=a3 validation gives accuracy 0(that is DBN fails in predicting this value). how can we know why?
how can we find explanation?

thank you this is very helpful thesis

Hello Marek!
this is sample from my data set .
I don't understand

marek wrote:over-fitting the data

.
I would be grateful if you tell me what do you think? the validation accuracy are not clear for me. if you would like i can send you the details. and other experiments

hello ^_^
we have the CPT between nodes. how do we know to how much does a parent affect the child (this is the joint probability?)
how to document the learned network?

>>why would the accuracy for a node at time t0 be lower than at time t=1?

Hello ! I have 1. made DBN with 3 time slice and then train dataset=11261 case (the training used the default settings of genie) 2. I have performed the following experiments (the target node called POS) (temporal arc only on the node pos dbn.rar ) a. validate (2kfold)with class node pos at time t1 ...

okay. thank you

hello ^_^
do we have to unroll the DBN befor parameter learning?

how validation is done using EM algorithm? it it type of inference?

hello! 1. if we want to make parameter learning again. how to delete the probabilities for all nodes. 2. if we make inference in which the target node is predicted then this is validation? is that right? 3. cross validation is for managing the validation process. inference algorithm is used to predi...

thank you.
does using smile solve this problem?

hello ! geni crashes again with this message (This application has requested the Runtime to terminate it in an unusual way.). when i download dbn which I've made prameter learning using EM without making any target nodes and executes fine, but when i re-open it. it gives the crash message above. and...