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advanced_search [2010/09/30 20:08]
biogridadmin
advanced_search [2017/08/08 12:52] (current)
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       * If you search for keywords prefixed with a minus sign -, you are performing a NEGATIVE search. For example, if you search for **+protein +kinase -yeast** this is the equivalent of saying return papers containing **protein** AND **kinase** but only if those papers DO NOT contain the keyword **yeast**. You cannot perform an all negative search so a search like **-yeast -human** is invalid.       * If you search for keywords prefixed with a minus sign -, you are performing a NEGATIVE search. For example, if you search for **+protein +kinase -yeast** this is the equivalent of saying return papers containing **protein** AND **kinase** but only if those papers DO NOT contain the keyword **yeast**. You cannot perform an all negative search so a search like **-yeast -human** is invalid.
   - **EXACT PHRASE Searching**   - **EXACT PHRASE Searching**
-      * If you search for keywords encased in double quotations ", you are performing an EXACT PHRASE search. For example, if you search for **"​protein kinase domain"​** this is the equivalent of saying return papers containing the EXACT PHRASE **protein kinase domain**. You can use exact phrase searching in combination with the above options such as **+"​protein kinase domain"​ -"SH2 Domain"​** which will return papers containing **protein kinase domain** but not if they also contain **SH2 domain**. You should use exact phrase searching anytime you want to find a specifically worded phrase including looking for authors **"​Smith AC"** or exact titles **"​Analysis of murine HOXA-2 activity in Drosophila melanogaster"​**.+      * If you search for keywords encased in double quotations ", you are performing an EXACT PHRASE search. For example, if you search for **"​protein kinase domain"​** this is the equivalent of saying return papers containing the EXACT PHRASE **protein kinase domain**. You can use exact phrase searching in combination with the above options such as **+"​protein kinase domain"​ -"SH2 Domain"​** which will return papers containing **protein kinase domain** but not if they also contain **SH2 domain**. You should use exact phrase searching anytime you want to find a specifically worded phrase including looking for authors **"​Smith AC"** or exact titles **"​Analysis of murine HOXA-2 activity in Drosophila melanogaster"​**. When search for a title of a publication make sure you put quotes around it, otherwise you'll get back every paper containing any of those words in the title. Also, make sure to remove **[[search_tips|invalid characters]]** from the title if it contains any...
   - **GROUPED Searching**   - **GROUPED Searching**
       * If you search for keywords encased in round brackets ( ), you are performing a grouped search. This option is useful for more complicated queries where you want to string together many keywords. For example, **+(protein kinase domain) +(sh2 domain)** is the equivalent of saying search for any one of **protein**,​ **kinase**, OR **domain** (but one must be there because of the + sign) and also any one of **sh2** and **domain** (also, one of the 2 must be there because of the second + sign). So, in this case grouping has allowed for the combination of both OR and AND searches into a single query. ​       * If you search for keywords encased in round brackets ( ), you are performing a grouped search. This option is useful for more complicated queries where you want to string together many keywords. For example, **+(protein kinase domain) +(sh2 domain)** is the equivalent of saying search for any one of **protein**,​ **kinase**, OR **domain** (but one must be there because of the + sign) and also any one of **sh2** and **domain** (also, one of the 2 must be there because of the second + sign). So, in this case grouping has allowed for the combination of both OR and AND searches into a single query. ​
 
advanced_search.txt · Last modified: 2017/08/08 12:52 (external edit)