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+This document describes how to use the tools for search quality analysis.
+
+
+1. Prerequisites.
+
+   * Get the latest version of omim (https://github.com/mapsme/omim) and build it.
+
+   * Get the latest samples.lisp file with search queries. If you don't know
+     how to get it, please, contact the search team.
+
+   * Install Common Lisp. Note that there are many implementations,
+     but we recommend to use SBCL (http://www.sbcl.org/).
+
+   * Install Python 3.x and packages for data analysis (sklearn, scipy, numpy, pandas, matplotlib).
+
+   * Download maps necessary for search quality tests.
+     For example:
+
+     ./download-maps.sh -v 160524
+
+     will download all necessary maps of version 160524 to the current directory.
+
+
+2. This section describes how to run search engine on a set of search
+   queries and how to get a CSV file with search engine output.
+
+    i) Run gen-samples.lisp script to get search queries with lists of
+       vital or relevant responses in JSON format. For example:
+
+       ./gen-samples.lisp < samples.lisp > samples.json
+
+   ii) Run features_collector_tool from the build directory.
+       For example:
+
+       features_collector_tool --mwm_path path-to-downloaded-maps \
+         --json_in samples.json \
+         --stats_path /tmp/stats.txt \
+         2>/dev/null >samples.csv
+
+       runs search engine on all queries from samples.json, prints
+       useful info to /tmp/stats.txt and generates a CSV file with
+       search engine output on each query.
+
+       The resulting CSV file is ready for analysis, i.e. for search
+       quality evaluation, ranking models learning etc. For details,
+       take a look at scoring_model.py script.
+
+  iii) To take a quick look at what the search returns without
+       launching the application, consider using search_quality_tool:
+
+       search_quality_tool --viewport=moscow \
+         --queries_path=path-to-omim/search/search_quality/search_quality_tool/queries.txt
+         --top 1 \
+         2>/dev/null
+
+       By default, map files in path-to-omim/data are used.