Note

---

The usage of this shim is now considered deprecated. The underlying libraries should be used directly. noj is a new librray to combine several of these librraies, without remapping the namespaces. It contains as well updated versions of several of the tutorials here.

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• v0.3:
• latest snapshot:
• latest snapshot:

scicloj.ml - A idiomatic Clojure machine learning library.

All documenttaion stays valid when using libraries directly or via noj, except for the namespaces in use.)

Main features:

• Harmonized and idiomatic use of various classification, regression and unsupervised models
• Supports creation of machine learning pipelines as-data
• Includes easy-to-use, sophisticated cross-validations of pipelines
• Includes most important data transformation for data preprocessing
• Experiment tracking can be added by the user via a callback mechanism
• Open architecture to allow to plugin any potential ML model, even in non-JVM languages, including deep learning
• Based on well established Clojure/Java Data Science libraries
  • tech.ml.dataset for very efficient underlying data storage
  • Smile for ML models
  • metamorph.ml as foundation of higher level ML functions (former: tech.ml )

Quickstart

Dependencies:

{:deps
 {scicloj/scicloj.ml {:mvn/version "0.3"}}}

Code:

(require '[scicloj.ml.core :as ml]
         '[scicloj.ml.metamorph :as mm]
         '[scicloj.ml.dataset :as ds])

;; read train and test datasets
(def titanic-train
  (ds/dataset "https://github.com/scicloj/metamorph-examples/raw/main/data/titanic/train.csv" {:key-fn keyword :parser-fn :string}))

(def titanic-test
  (-> "https://github.com/scicloj/metamorph-examples/raw/main/data/titanic/test.csv"
      (ds/dataset {:key-fn keyword :parser-fn :string})
      (ds/add-column :Survived [""] :cycle)))

;; construct pipeline function including Logistic Regression model
(def pipe-fn
  (ml/pipeline
   (mm/select-columns [:Survived :Pclass ])
   (mm/add-column :Survived (fn [ds] (map #(case % "1" "yes" "0" "no" nil "") (:Survived ds))))
   (mm/categorical->number [:Survived :Pclass])
   (mm/set-inference-target :Survived)
   {:metamorph/id :model}
   (mm/model {:model-type :smile.classification/logistic-regression})))

;;  execute pipeline with train data including model in mode :fit
(def trained-ctx
  (pipe-fn {:metamorph/data titanic-train
            :metamorph/mode :fit}))

;; execute pipeline in mode :transform with test data which will do a prediction 
(def test-ctx
  (pipe-fn
   (assoc trained-ctx
          :metamorph/data titanic-test
          :metamorph/mode :transform)))

;; extract prediction from pipeline function result
(-> test-ctx :metamorph/data
    (ds/column-values->categorical :Survived))
    
;; => #tech.v3.dataset.column<string>[418]
;;    :Survived
;;    [no, no, yes, no, no, no, no, yes, no, no, no, no, no, yes, no, yes, yes, no, no, no...]   
                

Community

For support use Clojurians on Zulip:

Scicloj.ml on Zulip

or on Clojurians Slack:

Scicloj.ml on Slack

Documentation

Full documentation is here as userguides

API documentation: https://scicloj.github.io/scicloj.ml

Reference to projects scicloj.ml is using/based on:

This library itself is a shim, not containing any functions. The code is present in the following repositories, and the functions get re-exported in scicloj.ml in a small number of namespaces for user convenience.

• https://github.com/techascent/tech.ml
• https://github.com/scicloj/tablecloth
• https://github.com/scicloj/metamorph
• https://github.com/scicloj/metamorph.ml
• https://github.com/techascent/tech.ml.dataset
• https://github.com/scicloj/scicloj.ml.smile
• https://github.com/scicloj/scicloj.ml.xgboost
• https://github.com/haifengl/smile

Scicloj.ml organises the existing code in 3 namespaces, as following:

namespace scicloj.ml.core

Functions are re-exported from:

• scicloj.metamorph.ml.*
• scicloj.metamorph.core

namespace scicloj.ml.dataset

All functions in this ns take a dataset as first argument. The functions are re-exported from:

• tabecloth.api
• tech.v3.dataset.modelling
• tech.v3.dataset.column-filters

namespace scicloj.ml.metamorph

All functions in this ns take a metamorph context as first argument, so can directly be used in metamorph pipelines. The functions are re-exported from:

• tablecloth.pipeline
• tech.v3.libs.smile.metamorph
• scicloj.metamorph.ml
• tech.v3.dataset.metamorph

In case you are already familar with any of the original namespaces, they can of course be used directly as well:

(require '[tablecloth.api :as tc])
(tc/add-column ...)

Plugins

scicloj.ml can be easely extended by plugins, which contribute models or other algorithms. By now the following plugins exist:

• Builtin: scicloj.ml.smile
• Builtin: scicloj.ml.xgboost
• All sklearn models: sklearn.clj
• top2vec model: scicloj.ml.top2vec
• crf A NER model from standfortNLP
• clj-djl Use fasttext model from djl