Spark jobs
Apache Spark can power a wide variety of data analysis jobs. In Managed Fusion, Spark jobs are especially useful for generating recommendations.
Spark job subtypes
For the Spark job type, the available subtypes are listed below.- SQL Aggregation
A Spark SQL aggregation job where user-defined parameters are injected into a built-in SQL template at runtime. - Custom Python
The Custom Python job provides user the ability to run Python code via Managed Fusion. This job supports Python 3.6+ code. - Script
This job lets you run a custom Scala script in Managed Fusion.
See Additional Spark jobs for more information.
Spark job configuration
Spark jobs can be created and modified using the Managed Fusion UI or the Spark Jobs API. They can be scheduled using the Managed Fusion UI or the Spark Jobs API. For the complete list of configuration parameters for all Spark job subtypes, see the Jobs Configuration Reference.Machine learning jobs
Managed Fusion provides these job types to perform machine learning tasks.Signals analysis
These jobs analyze a collection of signals in order to perform query rewriting, signals aggregation, or experiment analysis.- Ground Truth
Ground truth or gold standard datasets are used in the ground truth jobs and query relevance metrics to define a specific set of documents.
Query rewriting
These jobs produce data that can be used for query rewriting or to inform updates to the synonyms.txt file.- Head/Tail Analysis
Perform head/tail analysis of queries from collections of raw or aggregated signals, to identify underperforming queries and the reasons. This information is valuable for improving overall conversions, Solr configurations, auto-suggest, product catalogs, and SEO/SEM strategies, in order to improve conversion rates. - Phrase Extraction
Identify multi-word phrases in signals. - Synonym Detection
Use this job to generate pairs of synonyms and pairs of similar queries. Two words are considered potential synonyms when they are used in a similar context in similar queries. - Token and Phrase Spell Correction
Detect misspellings in queries or documents using the numbers of occurrences of words and phrases.
Signals aggregation
- SQL Aggregation
A Spark SQL aggregation job where user-defined parameters are injected into a built-in SQL template at runtime.
Experiment analysis
- Ranking Metrics
Use this job to calculate relevance metrics by replaying ground truth queries against catalog data using variants from an experiment. Metrics include Normalized Discounted Cumulative Gain (nDCG) and others.
Collaborative recommenders
These jobs analyze signals and generate matrices used to provide collaborative recommendations.- BPR Recommender
Use this job when you want to compute user recommendations or item similarities using a Bayesian Personalized Ranking (BPR) recommender algorithm. - Query-to-Query Session-Based Similarity
This recommender is based on co-occurrence of queries in the context of clicked documents and sessions. It is useful when your data shows that users tend to search for similar items in a single search session. This method of generating query-to-query recommendations is faster and more reliable than the Query-to-Query Similarity recommender job, and is session-based unlike the similar queries previously generated as part of the Synonym Detection job.
Content-based recommenders
Content-based recommenders create matrices of similar items based on their content.- Content-Based Recommender
Use this job when you want to compute item similarities based on their content, such as product descriptions.
Content analysis
-
Cluster Labeling
Cluster labeling jobs are run against your data collections, and are used:- When clusters or well-defined document categories already exist
- When you want to discover and attach keywords to see representative words within existing clusters
-
Document Clustering
The Document Clustering job uses an unsupervised machine learning algorithm to group documents into clusters based on similarities in their content. You can enable more efficient document exploration by using these clusters as facets, high-level summaries or themes, or to recommend other documents from the same cluster. The job can automatically group similar documents in all kinds of content, such as clinical trials, legal documents, book reviews, blogs, scientific papers, and products. -
Classification
This job analyzes how your existing documents are categorized and produces a classification model that can be used to predict the categories of new documents at index time. -
Outlier Detection
Outlier detection jobs are run against your data collections, and also perform the following actions:- Identify information that significantly differs from other data in the collection
- Attach labels to designate each outlier group