![]() ![]() The accuracy of the text output from OCR depends primarily on the clarity of the of the file being processed. ![]() Computers review the shapes contained in scanned documents to perform their best guess at their text contents. Optical Character Recognition (OCR) is a procedure used to extract text from images. Both live and indexed searches can be run with tools like dtSearch, Elasticsearch, or other common eDiscovery and forensic software. When searching many files, it is better to index the documents before searching to speed things up. Live searches will take longer than indexed searches because they must read through full documents instead of locating documents by their index entry. Live searches are advantageous when you cannot create a thorough content index or only need to search through a few files. Apple computers with recent versions of MacOS installed have an indexing tool called Spotlight which adds document contents to its index, further improving search performance.Ī live search does not use an index but instead reads through every document in the set to find a word or phrase. The Windows 10 operating system indexes file names and properties to assist users in locating files. The index will also show where in the document the word appears. A search index will look similar – every word in a set of indexed documents will be stored in the index along with a reference to which documents include that word. Instead of reading an entire cookbook front to back to find recipes that use potatoes, you would consult the cookbook index for the word “potato”. Electronic indexes operate similarly to paper indexes. Some searches are fast and some are slow – this can be due in part to the power of the computer or the search method used, but indexed searches are generally faster than live searches.
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