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In this video I will show you the basics of doing searches with Snow Owl
and introduce you to the way search results are ranked based on the search profile.
There are three ways of doing searches with Snow Owl.
The first one is the quick search which you can access through this text field here
just simply by clicking in it
or with the shortcut Ctrl-4 on WIndows or
CMD-4 on Mac.
So wherever you are
in the user interface this shortcut will always bring up
the quick search.
The second way of doing search is the
concept filter search.
So each of the
concept views has
a field for doing filter searches which is here
so this is for doing searches within SNOMED CT,
this is for doing searches within ATC,
this one for ICD-10 so it will filter
these terminologies and display the results in the concept views.
The third one which we will talk about in the next video
is the
global search dialogue that comes up when you click
this field
and you can see it's a little bit more complicated and this is why we'll save it for later.
Okay, let's start with the
quick search. It's fairly similar to what you know from doing a Google search.
You just type in a term or a few characters
and the results will
come up as soon as you type.
You can also use abbreviations,
incomplete terms
or misspellings and still get meaningful
results.
So let me type
something.
Let's look for Diabetes
and you see whenever I type in a new character my
search results
will change and
the more characters I type in, the smaller my search results
will get.
Let's stick with "dia" for now. You see that the search results
are displayed in different
sections
so there's a section with two results which is called "previous
choices."
This means that I was looking for Diabetes before and
I picked
some concepts from this list and so this is why they are displayed
on top of the list.
So because we assumed that choices that you made before you might want to look
for these terms again.
In the next section these are bookmarks
that have "dia" in them
and if you see down here there's my bookmark view, these are all my
bookmarks and there are actually two that have
"dia" in it and this is why they are displayed up here as well
but of course not the other bookmarks.
By the way if there's nothing in the field,
here, you just add this
it will display
your bookmarks. Let's go back.
The next sections are the different terminologies so for "dia" within
SNOMED CT
Snow Owl found 2.779 results,
within ICD-10 105 results,
ICD-10 Australian modification
392 results.
Let's get a little bit more specific. You see it already shows Diabetes
here in grey font
there's an autocomplete function and it works by simply
clicking the tab key
so if I do this
and now it gives me the option of doing Diabetes mellitus
but let's look at the results now you see
for SNOMED CT now we have only
299 results so we
narrowed the search and if I do the next one
it's even less.
The search does not only show you exact matches
what you see here is all exact matches, they're in normal font
but it also considers approximate
results, they will be shown in grey font
for instance, if I type in
"lower back
pain"
there is no exact match for "lower back pain" and therefore
it shows you everything that has back,
back pain,
lower
and
here it says "displaying 20 approximate matches
press Ctrl-4 for more" and if I do this,
it will
give me more
search results.
As you see, there's a lot of
pain, back,
lower.
If you have a term that doesn't have a lot of exact matches,
it will show the approximate
results as well.
If I type in for instance
"Lipodystrophy"
you see this is normal font
and here this one is already
in grey because it's an approximate match and if I hit Ctrl-4
again,
I have more approximate
matches displayed.
It also works with misspellings. Let me misspell lipodystrophy
I will start with "Lypodistrphy"
you see even though I mispelled it, and here I missed a character completely
it still finds
the term Lipodystrophy.
Another nice feature is that the quick search also works if you only type
a few characters of each search term.
If I want to find for instance "standing systolic blood pressure"
I can just type
the first two characters like "st"anding
"sy"stolic
"bl"ood "pr"essure
and here it comes up
and I've picked this before this is why it gives it to me as previous choice
or as a
SNOMED CT concept.
It also works if you use a different combination so you can start with
"bl"ood
"pr"essure
"st"anding
"sy"stolic
and it will also come up.
Once you found your concept and you want to open the editor
you just
go on the concept
and click it
and it will show up in the editor.
If you have several options, like
let's do "dia" again,
autocomplete
you just
go down with your arrow keys or with your mouse
and then you pick, just click
so it's very easy to
open.
Okay,
I want to say a few words about the way the search results are sorted.
When we designed Snow Owl we wanted to make sure
that the concepts that are the most relevant to the users will be displayed on
top of the list
for this reason
as you've seen with Diabetes, we have the previous choices and the bookmarks
first
but also the other results are sorted
using some tricks.
We use the global usage frequency.
This means that terms are used more often in practice will have a higher ranking.
However, exact matches usually take precedence over frequently used
concepts this is why you'll see
exact
matches here.
The global usage frequency
is
part of the search tool. So more frequent terms will come higher up in the list.
It's also based on your search profile and I want to show you what this is about.
You can access the search profile by going to
File
> Preferences
> Snow Owl, and then there's something called "Search profile."
Let me open this for you.
Here's the search profile. That's
the default profile. There you can see where the active
profile is and this can be changed. I will show you soon.
So the search profile -- on the left side, you see there are
groups of concepts, here are your top-level concepts that you already know from the
previous video.
You can also add reference sets
to your search profile.
Here its the non-human reference set.
There is an
ICD-10 reference set.
Modules, national extensions
can be added
as well.
So it actually can get quite complicated but I just want to give you a brief
introduction
to the search profile.
On the right side you see ther "My interest" column and there are traffic lights
that are all set on "average."
This means
that
all the groups here
are ranked
equally so there's nothing that is preferred
and then there's the option
to change this and there are actually some built-in reference sets, I want to show you what it looks like
when it's changed.
Let's take the first one "cardiology"
so you see now the traffic lights actually have
different colours, there's green, yellow
and there's red
so there are some concepts that are excluded so
in this part
non-human reference set members were excluded completely from the
search results
so if you're a clinician or a
cardiologist, it makes sense to suppress
all veterinarian concepts and increase
the ranking of the most relevant terms and for cardiologists it would be
terms of the cardiology reference set, and this is why this is "above average" and you see it has a green light.
So it's quite simple
to understand.
There are different search profiles for
medical specialties that already come with Snow Owl:
There's neurology, mental health, hematology, oncology and so on.
If you are a clinician,
I would recommend just
using this one
"clinician general"
let's click it
It's actually a little bit bigger, you see because some reference sets were added
to this one
because it
comprises a lot of
different terms.
It's also quite easy to create your own search profile. All you do is you just go to
New
and you type in
a name. let's use "Test" right now.
I would recommend maybe starting out with the default search profile so you always
have to pick an initial search profile
that you change.
If I hit OK, it will give me the default search profile. Now you can add
reference set members, it gives you the default
search profile. You can add
reference set members
and then you can change
the ranking of the different groups.
So if I want to have
the veterinarian
terms out, I go here and then
you can just open the drop-down menu
and exclude concepts.
Once you do that you will see that the light comes on, the red light comes on
so now the concepts are excluded. So if I want to have
clinical findings
displayed
higher up on the list
and then you set it to
above average
and then the green light comes on.
You see now this isn't saved yet
you can see the little asterisk here
and
if I hit OK, then it will save and add this
profile and actually
update my search preferences to this.
So just
change these, hit OK and
then you have your customized search profile
but I will go to cancel now.
So much about the quick search
and setting your own search
profile
and now a few more words about the
filter search within
the concept navigators.
It's fairly similar to the quick search.
It starts showing results after three characters, so not one but not three.
Let's type
"lip" for lipodystrophy and you see the trees is already
filtered
and it shows of course a lot of
results so I should probably be more
specific.
So you have
search results here and they're actually the same as
in the quick search.
However, they are displayed within the tree so you can see
where your concept is actually
located,
what the parent concept
is.
You can see if it's a more general concept which is
in this area or if it's a more
precise term like this one here
and if you don't like it, you can
display it as well as a flat list.
There is a toggle button here.
You can toggle
in between but the search results
are the same
and if you want to open an editor you just go to this one and
double-click it to open
the editor.
So it will not display the entire
hierarchy anymore - whenever there's a term here -
it will filter the tree
based on the search term you have here.
You might be wondering why it shows "Whipple's disease" and how this is
related to
my search term.
What you will see here is always the preferred term.
However, Snow Owl searches consider every description associated with a concept
so if we open "Whipple's disease"
in the editor,
you can see that a synonym is "Intestinal lipodystrophy" and this is why
it showed up
in
the research results.
It was actually originally called
intestinal lipodystrophy
before Whipple's disease
was introduced in the medical books.
So much about the basics of searches with Snow Owl and
in the next video we will talk about
the flashlight button here and the
global search dialogue
Thank you.