## 3 Methodology
\begin{table}
\begin{tabular}{l l l l} \hline \multirow{2}{*}{**Code**} & \multicolumn{2}{c}{**Types of**} & \multirow{2}{*}{**Definitions**} & \multicolumn{1}{c}{**Examples**} \\  & **Search Tactics** & & & \\ \hline _Lead_ & Identifying & Discover information as & “because my topic is very recent and it is \\  & search leads to & search leads at the beginning & business related, one of my first choices is \\  & get started & of the search process & cnn.com” \\ _Creat_ & Creating search & Come up with a search & [type in] “I am going to search _pea_ \\  & statement & statement for searching & _shoots”_; \\  & & & [using a given form] “fill fields with date \\  & & & and time to query what is available” \\ _Mod_ & Modifying & Change a previous search & “[previous query] London city tour \\  & search & statement to specify or broad & [modified query] London three-day \\  & statement & search results & tour” \\ _Eval_ & Evaluating & Assess relevance/usefulness of & “this article has references so that might \\  & individual & an item, or authority of an & be reliable...this is new information so I \\  & item(s) & item & think this is a good website”; \\  & & & “the first site [this site] was useful it gave \\  & & & a lot of information about kennel cough, \\  & & & the symptoms and how can we treat it”; \\  & & & “this site was not useful at all; it did not \\  & & & provide much info about it.” \\ _EvalR_ & Evaluating & Quickly assess the relevance & “I am still skimming my Google results \\  & search results & of search results & and I am not finding any related results.” \\ _Rec_ & Keeping a & Keep records of metadata of & [paper record] “so it is [the book] \\  & record & an item(s) before accessing & available at Central so I would write down \\  & & it/them & the call number.” \\ _AccF_ & Accessing & Go to a specific item or web & [book marking] “I want to bookmark it.” \\  & forward & page that has not been & [type in URL] “type URL, frommers.com” \\  & & accessed in the search by & [link] “clicks link to Near Southside under \\  & & using direct location, tracking & heading Outreach Communities” \\  & & meta-information, or & hyperlinks \\ _AccB_ & Accessing & Go back to a previous page by & [type in URL] “goes back to homepage \\  & backward & using direct location, tracking & through URL” \\  & & meta-information, or & [link] “clicks library back button to \\  & & hyperlinks & results” \\ _Lm_ & Learning & Gain knowledge of system & “Learn how to use Google earth” \\  & & features, system structure, & \\  & & domain knowledge, and & \\  & & database content & \\ \hline \end{tabular}
\end{table} 
Table 3: Coding Scheme of Types of Search Tactics. Search strategies were analyzed at three levels: categories of search strategies, types of search strategies, and variants of search strategies. Types of search strategies specifies different sequences of search tactics to achieve some goals, such as compare items, reformulation queries, get started, explore a site, _etc._ Search strategies that share similar characteristics were grouped together as categories of search strategies. At the same time, each type of search strategy also contains its variations. To save space, examples and results of each category, types and variations of search strategies were reported in the Results section. In order to ensure the reliability of data coding, one researcher first coded the data using the coding scheme presented above and analyzed sequences of search tactics, and then another researcher analyzed and verified whether the coding was appropriate. If there were disagreements in the coding, the two researchers worked together to reach an agreement. Figure 1: Frequency of types of search tactics applied.