> For the complete documentation index, see [llms.txt](https://docs.seldon.ai/alibi-detect/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.seldon.ai/alibi-detect/outlier-detection.md).

# Outlier Detection

- [Methods](https://docs.seldon.ai/alibi-detect/outlier-detection/methods.md)
- [Mahalanobis Distance](https://docs.seldon.ai/alibi-detect/outlier-detection/methods/mahalanobis.md)
- [Isolation Forest](https://docs.seldon.ai/alibi-detect/outlier-detection/methods/iforest.md)
- [Variational Auto-Encoder](https://docs.seldon.ai/alibi-detect/outlier-detection/methods/vae.md)
- [Auto-Encoder](https://docs.seldon.ai/alibi-detect/outlier-detection/methods/ae.md)
- [Variational Auto-Encoding Gaussian Mixture Model](https://docs.seldon.ai/alibi-detect/outlier-detection/methods/vaegmm.md)
- [Auto-Encoding Gaussian Mixture Model](https://docs.seldon.ai/alibi-detect/outlier-detection/methods/aegmm.md)
- [Likelihood Ratios for Outlier Detection](https://docs.seldon.ai/alibi-detect/outlier-detection/methods/llr.md)
- [Prophet Detector](https://docs.seldon.ai/alibi-detect/outlier-detection/methods/prophet.md)
- [Spectral Residual](https://docs.seldon.ai/alibi-detect/outlier-detection/methods/sr.md)
- [Sequence-to-Sequence (Seq2Seq)](https://docs.seldon.ai/alibi-detect/outlier-detection/methods/seq2seq.md)
- [Examples](https://docs.seldon.ai/alibi-detect/outlier-detection/examples.md)
- [AE outlier detection on CIFAR10](https://docs.seldon.ai/alibi-detect/outlier-detection/examples/od_ae_cifar10.md)
- [AEGMM and VAEGMM outlier detection on KDD Cup ‘99 dataset](https://docs.seldon.ai/alibi-detect/outlier-detection/examples/od_aegmm_kddcup.md)
- [Isolation Forest outlier detection on KDD Cup ‘99 dataset](https://docs.seldon.ai/alibi-detect/outlier-detection/examples/od_if_kddcup.md)
- [Likelihood Ratio Outlier Detection on Genomic Sequences](https://docs.seldon.ai/alibi-detect/outlier-detection/examples/od_llr_genome.md)
- [Likelihood Ratio Outlier Detection with PixelCNN++](https://docs.seldon.ai/alibi-detect/outlier-detection/examples/od_llr_mnist.md)
- [Mahalanobis outlier detection on KDD Cup ‘99 dataset](https://docs.seldon.ai/alibi-detect/outlier-detection/examples/od_mahalanobis_kddcup.md)
- [Time-series outlier detection using Prophet on weather data](https://docs.seldon.ai/alibi-detect/outlier-detection/examples/od_prophet_weather.md)
- [Seq2Seq time series outlier detection on ECG data](https://docs.seldon.ai/alibi-detect/outlier-detection/examples/od_seq2seq_ecg.md)
- [Time series outlier detection with Seq2Seq models on synthetic data](https://docs.seldon.ai/alibi-detect/outlier-detection/examples/od_seq2seq_synth.md)
- [Time series outlier detection with Spectral Residuals on synthetic data](https://docs.seldon.ai/alibi-detect/outlier-detection/examples/od_sr_synth.md)
- [VAE outlier detection for income prediction](https://docs.seldon.ai/alibi-detect/outlier-detection/examples/od_vae_adult.md)
- [VAE outlier detection on CIFAR10](https://docs.seldon.ai/alibi-detect/outlier-detection/examples/od_vae_cifar10.md)
- [VAE outlier detection on KDD Cup ‘99 dataset](https://docs.seldon.ai/alibi-detect/outlier-detection/examples/od_vae_kddcup.md)