Elastic and Solr (Lucene) with the help of various other dbs or graph dbs etc get you farther along but you really have to combine machine learning to get thing

Elastic and Solr (Lucene) with the help of various other dbs or graph dbs etc get you farther along but you really have to combine machine learning to get things in context which requires more data in certain domains so it requires someone like me that goes things alone to dive into many disciplines. It is not straight forward and results are not yes or no, more like 70% good and the rest is subjective. The most challenging parts are if you have many dimensions at the same time such as location / full text / user preferences / social filters / permissions etc. These are the problems that make my life suck right now as you cannot simply not have joins for some things or not have graph relations etc etc. Case in point following feeds with many dimensions so you need a pipeline approach in stages.