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Proximity Connectors

Step 3: Using Proximity Connectors to search phrases

Notice some of my search terms are two-word phrases. Dialog provides many different connectors for searching words that are adjacent to or near each other. This technique is called proximity searching. Proximity searching specifies the relative nearness of search terms to each other.

We use proximity connectors most commonly when we are:

The most commonly used proximity connectors are shown in the table below.

Connector Definition Example Words Retrieved
(N) Searches adjacent terms, in either order fiber?(n)optic? fiber optics
optical fiber
(W) Searches adjacent terms, in the EXACT order anti(w)depressant anti-depressant
flex-time
(#N) or (#W) Allows additional terms to occur between words pain(1n)killer? pain killer
pain killers
killers of pain
(L) Links subject headings to sub-headings nose(L)abnormalities

aspirin(L)adverse effects
Nose abnormalities (as a descriptor)
Aspirin — adverse effects (as a descriptor)

To Learn More about proximity connectors, click the Learn More icon.
Learn More

Quick Check 2: Look at the search terms we just identified in Step 1 to see where proximity connectors should be inserted.

Add the connectors to your search sheet, and click the Check Yourself Icon to see the answers. Check yourself

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Authoritative Answers Enriched by ProQuest

Search Tip 2-2:

A word containing punctuation — such as a hyphen or apostrophe — cannot be SELECTed with the punctuation intact; punctuation must be replaced with the (W) connector.

Example
anti(w)allergic
 

Retrieves
anti-allergic
 

Search Tip 2-3:

The (N) or (#N) connector is good to use when narrowing a search.

Since the Dialog system searches every word of the text, using (5N) or (10N) requires that words be next to each other or up to five or ten words apart.

Learn More #2: Proximity Connectors

1. strong>(N) Connector: To search a phrase without regard to the order of the words, we use the (N) connector between words. For example, BONE?(N)IMPLANT? retrieves records with the phrases: BONE IMPLANT(S) and IMPLANTED BONE(S).

Example: Retrieves:
bone(n)implant? bone implant
bone implants
implanted bone

 

2. (W) Connector: To search an exact phrase, we use the (W) connector between words in the phrase. For example, GENE(W)THERAPY retrieves records where the two words appear next to each other and in this exact order.

Example: Retrieves:
sea(w)based(w)drug? sea-based drug(s)
sea based drug(s)

 

3. (#N, #W) Connectors: Both the (W) and (N) connectors may have a number inserted — for example, (2w), (3n), etc. — which specifies a maximum number of intervening words that are allowed. It is almost always better to use (N) with a number: (1N), (2N), etc.

Example: Retrieves:
burkitt?(1w)lymphoma Burkitt lymphoma
Burkitts lymphoma
Burkitt's lymphoma
pain(1n)killer? pain killer(s)
killers of pain

 

4. (L) Connector: The (L) connector links heading and subheadings in the descriptor field.

Example: Retrieves:
hypoglycemia(L)side effect Hypoglycemia as a heading linked to the subheading side effect or SI

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