Walk Settings is somewhat of a misnomer for a meta search profile since it doesn't do any walking of its own. On this page you list the host(s) and profile(s) to search and merge when this profile is accessed.
For each profile you want included in the search you list the profile's name in the Profile Name column and the host name or IP of the machine where that profile resides in the Host IP or Name column. You may use DNS resolvable names or IP addresses in the host column. IP addresses are slightly more efficient because they don't require DNS lookup. But names are more flexible. Only the DNS, not a bunch of profile settings, has to change when machines get replaced or renumbered.
The Display Name column is used to provide a user friendly name for this profile that will be displayed if the user is allowed to choose which profiles to search.
The Bias setting allows you to apply a ranking bias to your metasearch targets. You can add or remove rank to results from a given target by increasing or decreasing the bias for that target. Setting bias to 3 will cause results from that target to have 3% higher rank than it normally would (a 76% result would become 79%, etc.).
The Status column shows the status of the remote profile once a host/profile has been entered and Update has been pressed. If the target is searchable, OK is displayed. Otherwise, text explaining the error is displayed. Refreshing the page re-queries the target profiles.
If User Selection is set to Y then the user will be
presented with a list of Display Names and can choose which ones
to search. Leaving them all unchecked will cause them all to be
searched. The list is submitted via the
mu query string
variable (one profile per
mu value, multiple values if needed).
If User Selection is N then any
mu value(s) are
The Meta Mode setting controls whether profiles on the same host will be searched serially or in parallel. "Sameness" of host is determined by the Host IP or Name setting, so using different names or a name and an IP address will allow you to mix serial and parallel.
The Results Merge Method setting controls how target profiles' results are merged and sorted by the meta profile. Two methods are available:
Note that in both cases, the target profiles still individually sort their results according to requested order. The Results Merge Method setting only affects how those top results are then merged and sorted by the meta profile.
Max Backend Data Size provides a sanity limit on the information collected from metasearch backends. You can usually leave this untouched, but it may need increased if you're getting Max Page Size exceeded errors in your metasearch results. This can be caused by having an exceptionally large number of results per page (thousands), or very large Additional Fields.