Full-Text Search Features

Basic Search Types

	Phrase searching finds phrases like: due process of law
	Boolean operators and, or, not can be used with nested words and phrases: e.g. due process of law and not (equal protion or civil rights)
	Proximity searching finds a word or phrase within "n" words of another word or phrase: e.g. apple pie w/25 peach pie
	Directed Proximity searching finds a word or phrase "n" words before another word or phrase: apple pie pre/38 peach cobbler.
	Phonic searching finds words that sound alike, like Smythe in a search for Smith.
	Stemming finds variations on word endings, like applies, applied, applying in a search for apply.
	Numeric range searching finds any number between two numbers, such as between 6 and 36
	Macro capabilities make it easy to include frequently used items in a search request.
	Wildcard support in any position allows: ? to hold a single character place; * to hold multiple character places; = to indicate a numeric character; e.g. apple* and not apple? sauce e.g. inv30=====, 5522 ==== ==== ====
	See Fields for fielded search options.

Fuzzy Searches

Fuzzy searches use a proprietary algorithm to find search terms even if they are misspelled. Search fuzziness adjusts from 0 to 10 so that you can fine-tune your search to the level of OCR or typographical errors in your files. A search for alphabet with a fuzziness of 1 would find alphaqet; with a fuzziness of 3, it would find both alphaqet and alpkaqet. Fuzziness is not "hardwired" into the index, so you can vary fuzziness at the time of each search Synonym / Thesaurus Searches (Concept searching) WordNet thesaurus searching lets you look for fast and find similar words like quick and speedy Variable levels of automatic synonym expansion User defined thesaurus allows you to build up a specialised thesurus for specific terms; e.g. trade names v generic chemical names, business jargon v formal terminology etc. Natural Language dtSearch uses a vector space model to compare a search request to documents with matching search terms Natural Language allows for unstructured search requests such as: Find me Sam's Memo on the 1999 takeover of MegaHuge Corporation dtSearch then does intelligent relevancy ranking using automatic term weighting based on the frequency and density of hits in your files. In the above example, if 1999 appeared in 3,000 files, and Sam appeared in only two files, then Sam would get a much higher relevancy rating. A positional scoring option works with dtSearch's natural language relevancy ranking to rank documents more highly when hits are near the top of a file, or otherwise clustered in a file. In this way, a natural language search takes you directly from a "plain English" search request to the most relevant documents. Unicode Support Unicode support allows for indexing and searching of non-English text, including every character set supported by the Unicode standard. In addition to full Unicode support, dtSearch offers extensive additional alphabet customisation options. Combining Search Types Nearly all search types are combinable* You can make your search request as complex as you want, up to 32,000 characters.   * Natural language searching (All words) is essentially an unstructured search request, and is not combinable with structured search requests, such as those using Boolean (and, or, not) or proximity (w/n) operators. Variable Term Weighting Variable term weighting works in connection with Boolean searching to provide extra positive or negative emphasis on words Variable term weighting also works in connection with natural language searching to provide extra emphasis on certain words beyond the standard relevancy ranking. Positive term weighting can place extra emphasis on one or more words in a search: soup:8 or recipe:3 Negative term weighting can assign negative emphasis to one or more words in a search: red or green or yellow:-7 Other dtSearch Desktop and Network provide for sorting search results (as well as re-sorting with a click following a search) by name, date, fields, number of hits or "relevancy". dtSearch Desktop and Network also include a wide range of tools for easy search formation, including a scrolling word list and a Browse word feature. See dtSearch Desktop for more information. dtSearch Network supports options packages for conveniently sharing certain search capabilities, such as macros, user thesaurus synonym rings, alphabet customisation, and file segmentation and rules. See dtSearch Network for more information. Filtering options let you limit the files to retrieve by name, date or size, in both indexed and unindexed searches. Capacity dtSearch can create as many indexes as you need Each index can hold over 1 Terabyte of data (up to 2048 million documents per index) - see details here dtSearch can search as many indexes as you like with a single search request. Unindexed search capacity is unlimited. Speed Indexed search speed is generally less than a second, even through multiple gigabytes of text. Indexed searching is optimised for multiple concurrent searching on a network or Web site.     Related Topics For file display options following a search, see Compatibility & Display. See Fields for fielded search options