Title: Algorithms

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*Mahout 0.12.0 Features by Engine*   
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| | **Single Machine** | [**MapReduce**](http://hadoop.apache.org/)| [**Spark**](https://spark.apache.org/) | [**H2O**](http://0xdata.com/) | [**Flink**](https://flink.apache.org/) |
---------------------------------------------|:----------------:|:-----------:|:------:|:---:|:----:|
**Mahout Math-Scala Core Library and Scala DSL**| 
|   [Mahout Distributed BLAS. Distributed Row Matrix API with R and Matlab like operators. Distributed ALS, SPCA, SSVD, thin-QR. Similarity Analysis](http://mahout.apache.org/users/sparkbindings/home.html).    | |  | [x](https://mahout.apache.org/users/sparkbindings/ScalaSparkBindings.pdf) | [x](https://github.com/apache/mahout/tree/master/h2o) |[x](https://github.com/apache/mahout/tree/flink-binding/flink)
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**Mahout Interactive Shell**| 
|   [Interactive REPL shell for Spark optimized Mahout DSL](http://mahout.apache.org/users/sparkbindings/play-with-shell.html) | | | x |
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**Collaborative Filtering** *with CLI drivers*|
    User-Based Collaborative Filtering           | *deprecated* | *deprecated*|[x](https://mahout.apache.org/users/algorithms/intro-cooccurrence-spark.html)
    Item-Based Collaborative Filtering           | x | [x](https://mahout.apache.org/users/recommender/intro-itembased-hadoop.html) | [x](https://mahout.apache.org/users/algorithms/intro-cooccurrence-spark.html) |
    Matrix Factorization with ALS | x | [x](https://mahout.apache.org/users/recommender/intro-als-hadoop.html) |  |
    Matrix Factorization with ALS on Implicit Feedback | x | [x](https://mahout.apache.org/users/recommender/intro-als-hadoop.html) |  |
    Weighted Matrix Factorization, SVD++  | x | | 
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**Classification** *with CLI drivers*| | |
    Logistic Regression - trained via SGD   | [*deprecated*](http://mahout.apache.org/users/classification/logistic-regression.html) |
    Naive Bayes / Complementary Naive Bayes  | | [*deprecated*](https://mahout.apache.org/users/classification/bayesian.html) | [x](https://mahout.apache.org/users/algorithms/spark-naive-bayes.html) | 
    Hidden Markov Models   | [*deprecated*](https://mahout.apache.org/users/classification/hidden-markov-models.html) |
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**Clustering** *with CLI drivers*||
    Canopy Clustering  | [*deprecated*](https://mahout.apache.org/users/clustering/canopy-clustering.html) | [*deprecated*](https://mahout.apache.org/users/clustering/canopy-clustering.html)| 
    k-Means Clustering   | [*deprecated*](https://mahout.apache.org/users/clustering/k-means-clustering.html) | [*deprecated*](https://mahout.apache.org/users/clustering/k-means-clustering.html) |  
    Fuzzy k-Means   | [*deprecated*](https://mahout.apache.org/users/clustering/fuzzy-k-means.html) | [*deprecated*](https://mahout.apache.org/users/clustering/fuzzy-k-means.html)|  
    Streaming k-Means   | [*deprecated*](https://mahout.apache.org/users/clustering/streaming-k-means.html) | [*deprecated*](https://mahout.apache.org/users/clustering/streaming-k-means.html) |  
    Spectral Clustering   |  | [*deprecated*](https://mahout.apache.org/users/clustering/spectral-clustering.html) |  
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**Dimensionality Reduction** *note: most scala-based dimensionality reduction algorithms are available through the [Mahout Math-Scala Core Library for all engines](https://mahout.apache.org/users/sparkbindings/home.html)*||
    Singular Value Decomposition | *deprecated* | *deprecated* | [x](http://mahout.apache.org/users/sparkbindings/home.html) |[x](http://mahout.apache.org/users/environment/h2o-internals.html) |   [x](http://mahout.apache.org/users/flinkbindings/flink-internals.html)
    Lanczos Algorithm  | *deprecated* | *deprecated* | 
    Stochastic SVD  | [*deprecated*](https://mahout.apache.org/users/dim-reduction/ssvd.html) | [*deprecated*](https://mahout.apache.org/users/dim-reduction/ssvd.html) | [x](http://mahout.apache.org/users/algorithms/d-ssvd.html) | [x](http://mahout.apache.org/users/algorithms/d-ssvd.html)|    [x](http://mahout.apache.org/users/algorithms/d-ssvd.html)
    PCA (via Stochastic SVD) | *deprecated* | *deprecated* | [x](http://mahout.apache.org/users/sparkbindings/home.html)  |[x](http://mahout.apache.org/users/environment/h2o-internals.html) |   [x](http://mahout.apache.org/users/flinkbindings/flink-internals.html)
    QR Decomposition         | *deprecated* | *deprecated* | [x](http://mahout.apache.org/users/algorithms/d-qr.html) |[x](http://mahout.apache.org/users/algorithms/d-qr.html) |   [x](http://mahout.apache.org/users/algorithms/d-qr.html)
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**Topic Models**||
    Latent Dirichlet Allocation  | *deprecated* | *deprecated* |
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**Miscellaneous**||
    RowSimilarityJob   |  | *deprecated* | [x](https://github.com/apache/mahout/blob/master/spark/src/test/scala/org/apache/mahout/drivers/RowSimilarityDriverSuite.scala) |
    Collocations  |  | [*deprecated*](https://mahout.apache.org/users/basics/collocations.html) |  
    Sparse TF-IDF Vectors from Text |  | [*deprecated*](https://mahout.apache.org/users/basics/creating-vectors-from-text.html) |
    XML Parsing|  | [*deprecated*](https://issues.apache.org/jira/browse/MAHOUT-1479?jql=text%20~%20%22wikipedia%20mahout%22) |
    Email Archive Parsing |  | [*deprecated*](https://github.com/apache/mahout/tree/master/integration/src/main/java/org/apache/mahout/text) | 
    Evolutionary Processes | [x](https://github.com/apache/mahout/tree/master/mr/src/main/java/org/apache/mahout/ep) |