Abstract: According to examples, an apparatus may include a processor and a non-transitory computer readable medium on which is stored machine readable instructions that may cause the processor to identify Internet protocol (IP) addresses and connection attributes associated with the IP addresses. The instructions may also cause the processor to train a machine learning model using the IP addresses as inputs to the machine learning model and connection contexts as outputs of the machine learning model. The machine learning model may learn a first weight matrix corresponding to the IP addresses and a second weight matrix corresponding to the connection contexts. In addition, the connection contexts may be concatenations of the connection attributes associated with a corresponding IP address.

Abstract: In some examples, a system is to, given an anomaly score threshold over which at least one anomalous point is to be observed in a test set of points with a specified probability, determine, using raw anomaly scores for a training set of points, a first mapping between raw anomaly scores in a first range and first transformed anomaly scores using a first transformation technique. The system is to determine, using the raw anomaly scores for the training set of points, a second mapping between raw anomaly scores in a second range greater than the first range and second transformed anomaly scores using a second transformation technique different from the first transformation technique. The system is to use the first mapping and the second mapping to detect an anomaly in a computing environment based on the test set of points.

Abstract: In some examples, a system determines a dependency among a plurality of anomaly detectors, the determining comprising clustering anomaly detectors of the plurality of anomaly detectors into clusters of anomaly detectors. The system aggregates anomaly scores produced by anomaly detectors in a first cluster of anomaly detectors, to generate a first aggregate anomaly score, and detects an anomaly using the first aggregate anomaly score.

Abstract: According to examples, an apparatus may include a processor and a non-transitory computer readable medium on which is stored machine readable instructions that may cause the processor to identify Internet protocol (IP) addresses and connection attributes associated with the IP addresses. The instructions may also cause the processor to train a machine learning model using the IP addresses as inputs to the machine learning model and connection contexts as outputs of the machine learning model. The machine learning model may learn a first weight matrix corresponding to the IP addresses and a second weight matrix corresponding to the connection contexts. In addition, the connection contexts may be concatenations of the connection attributes associated with a corresponding IP address.

Abstract: In some examples, a system determines a dependency among a plurality of anomaly detectors, the determining comprising clustering anomaly detectors of the plurality of anomaly detectors into clusters of anomaly detectors. The system aggregates anomaly scores produced by anomaly detectors in a first cluster of anomaly detectors, to generate a first aggregate anomaly score, and detects an anomaly using the first aggregate anomaly score.

Abstract: In some examples, a system computes risk scores relating to points corresponding to events in a computing environment, using a plurality of different risk score computation techniques, and generates a plurality of visualizations representing the points. The plurality of visualizations include a first visualization representing the points and including the risk scores computed using a first risk score computation technique of the different risk score computation techniques, and a second visualization representing the points and including the risk scores computed using a second risk score computation technique of the different risk score computation techniques.

Abstract: In some examples, a system is to, given an anomaly score threshold over which at least one anomalous point is to be observed in a test set of points with a specified probability, determine, using raw anomaly scores for a training set of points, a first mapping between raw anomaly scores in a first range and first transformed anomaly scores using a first transformation technique. The system is to determine, using the raw anomaly scores for the training set of points, a second mapping between raw anomaly scores in a second range greater than the first range and second transformed anomaly scores using a second transformation technique different from the first transformation technique. The system is to use the first mapping and the second mapping to detect an anomaly in a computing environment based on the test set of points.

Abstract: A method and apparatus that can extract new terms from documents for inclusion in a vocabulary collection is disclosed. A document may be parsed to obtain an n-gram phrase indicative of a new term. The phrase may include a plurality of words. The n-gram phrase may be decomposed into a series of bi-gram phrases each including a first and a second phrase part. The first and second phrase parts each include at least one word. It may then be determined whether the first or second phrase part is in a vocabulary collection. If not, it may be estimated as to the probability that the bi-gram phrase should be in the vocabulary collection. The bi-gram phrase may be added to the vocabulary collection if the probability that the bi-gram phrase should be in the vocabulary collection exceeds a minimum threshold level.

Abstract: At least one term is extracted [202] from unstructured information. The at least one term is validated [204]. Then, a sense of the at least one extracted and validated term is determined [206]. The at least one extracted and validated term is clustered [208] into at least one group of terms according to the determined sense. A taxonomy is generated [210] based on the clustering and a mining of accessible taxonomies.