Does anybody know what does the KNNDistancesSampler calculate in ELKI? I can see the java code for the function : https://github.com/elki-project/elki/blob/master/elki/src/main/java/de/lmu/ifi/dbs/elki/algorithm/KNNDistancesSampler.java, but I am really bad at java - I can see it should get the distance of its neighbors by getKNNDistance()... Is it returning average distance(Euclidean by default) of the k-nearest neighbors of each point? I know it should be used for epsilon estimation of dbscan etc.etc., but I'd also like to know what it is doing... Thank you
1
There are 1 answers
Related Questions in KNN
- How does Elasticsearch do attribute filtering during knn (vector-based) retrieval?
- How to use query combined to KNN with ElasticSearch?
- The KNN model I am using is always coming back at 100% accuracy but it shouldn't be
- identify objects with 2 classes using knn and greyscale and display the appearance in the GUI
- KNN algorithm from OCR project having trouble with certain digits
- SOLR compatibility of the KNN query parser with function queries
- How to decrease too many False Positives I get from a KNN classifier for ECG R-peak detection?
- Inconsistent results when using KNN innerproduct scoring on OpenSearch depending on if a filter is set
- Python: Missing (Constant) Inaccuracy from knn_classifier() on eeg audio (X_train)
- Prediction Accuracy Zero (y_pred == y_test) & ValueError after Binary Projection, kNN Hamming, Xtrain/y_train appear accurate
- How to combine a column containing score value with knn score of rest of the columns
- R package 'BiocNeighbors' resturn different nearest neighbors with other packages (e.g., FNN package)
- Regression And Classification
- KNN Across categories in postgis using indexing
- knn manual calculation vs. R class package
Related Questions in ELKI
- Getting row indices back from the DBIDs neighbours in ELKI CorePredicate DBCAN
- WeightedCorePredicate Implementation for ELKI - An example
- Elki GDBSCAN Java/Scala - how to modify the CorePredicate
- Visualization results of dbscan using ELKI
- DBSCAN: How to Cluster Large Dataset with One Huge Cluster
- ELKI: How to Specify Feature Columns of CSV for K-Means
- ELKI: LOF score as infinite
- how to install ELKI on windows?
- Should DBSCAN and its index have the same distance function
- sample_weight option in the ELKI implementation of DBSCAN
- Create Dendrogram with Elki
- KMeans usage in ELKI, comprehensive example
- How can I cluster data using a distance matrix with the ELKI library?
- ELKI KNNDistancesSampler
- Can ELKI cluster non-normalized negative points?
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
Popular Tags
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
References for this are given in the class documentation:
The class is returning a sample, not just the average, of the kNN distances to help choosing the epsilon parameter using the "elbow" method on that plot. It does not automate choosing this - it only produces the plot.