I am using luis.ai which is offered as a part of Microsoft Cognitive Services, in my project. I have a requirement of detecting names using LUIS. For the same, I have been using the phrase list feature. I have added some names in the list. But as we all know, the names list is never exhaustive. So, no matter how many names I add, since they don't have a specific pattern, when I test with some new names, the entity detection fails. I want to know if there's any other way in which we can have LUIS detect names of people.
Please let me know if you have a solution to this problem.
LUIS could be used to recognize and extract intents and entities from utterances, but based on my experience, it might not be 100% intelligent to identify person’s name, because person’s name could be anything.
As you did, adding not well-recognized names in phrase list could be as a solution. Besides, this github issue:Identifying the Names from the sentence using LUIS discussed a similar question, and as cahann mentioned, you can add and label more example utterances that contain not well-recognized name to make your LUIS app recognize Names better.
Related
What is the best practice approach to handle typos / misspelling on LUIS List Entities?
I have intents on LUIS which use a list entity (specifically Company Department - HR, Finance, etc). It is common for users to misspell this when putting forward their utterance. LUIS expects an exact match, it doesn't do a "smart" match, and therefore doesn't pick up the misspelled entity.
a) Using bing spell check is not necessarily a good solution. e.g. Certain departments are acronyms such as VRPA - and bing wont correct a typo there.
b) When I used LUIS a year ago, I would pre-process the utterance and use a Levenshtein distance algorithm to fix typos on list entities before feeding them to LUIS.
I would imagine that by now LUIS has some better out of the box way of handling this very common use case.
I'd appreciate input on what the best practice approach is to handle this.
#acambitsis and I exchanged messages via his UserVoice ticket, but I'm going to post the answer here for others.
A combination of Bing and Simple Entities might be what you're looking for, then (they're machine-learned).
I was able to accomplish something close and attached images.
In entities, I created a Simple entity with the role, VRPA. In intents, I created the Show Me intent and added sample utterances "Show me the VRPA" and "Show me the VPRA". I clicked on V**A and selected the Simple Entity:VRPA role. After training, I tried "show me the varp" and it correctly guessed "varp" was the "Simple:VRPA" entity.
You may also find RegEx entities useful. For acronyms, you could do something like: /[vrpa]/i and then any combination of VRPA/VPRA/VARP/ARVP would match.
I highly recommend reading through the Entity Types and Improve App Performance to see if anything jumps out to solve your particular issues.
This may not do exactly what you're looking for. If not, I'd recommend implementing a fuzzy-matching algo of your choice.
entities
intents
I am a very new to LUIS. I am not able to use phrase list and pattern. Since I could not find any resource (Except Microsoft document), where I can get more details about it neither I could find any reference of demo.
It would be nice if any one can explain a bit in layman language in which scenario we can use both.
One more thing phrase list are not listing with entity while we are working on Utterance in intent creation
Since I could not find any resource (Except Microsoft document), where
I can get more details about it neither I could find any reference of
demo.
You can find more examples from this StackOverFlow answers about using Patterns feature and Phrase Lists other than Microsoft documentation.
It would be nice if any one can explain a bit in layman language in
which scenario we can use both.
In short Patterns are used for labeling entities which follow a specific pattern without providing more examples whereas Phrase Lists are used for providing synonyms of the utterances.
One more thing phrase list are not listing with entity while we are
working on Utterance in intent creation
Please read more about Phrase Lists about how to use it and how it works. If you still have issues send the snapshot with more details to Luisuservoice#microsoft.com.
I trained my luis model to recognize an intent called "getDefinition" with example utterances such as: "What does BLANK mean" or "Can you explain BLANK to me?". It recognizes the intent correctly. I also added an entity called "topic" and trained it to recognize what topic the user is asking about. The problem is that luis only recognizes the exact topic the user is asking about if I used that specific term in one of the utterances before.
Does this mean I have to train it with all the possible terms a user can ask about or is there some way to have it recognize it anyway?
For example when I ask "What does blockchain mean" it correctly identifies the entity (topic) as blockchain because the word blockchain is in the utterance. But if I ask the same version of the question about another topic such as "what does mining mean", it doesn't recognize that as the entity.
Using a list or phrase list doesn't seem to be solving the problem. I want to eventually have thousands of topics the bot responds to, entering each topic in a list is tedious and inconvenient. Is there a way LUIS can recognize that its a topic just from the context?
What is the best way to go about this?
Same Doubt, Bit Modified. Sorry for Reposting this here.
At the moment LUIS cannot extract an entity just based on the the intent. Phrase lists will help LUIS extract tokens that don't have explicit training data. For example training LUIS with the utterance "What does blockchain mean?" does not mean that it will extract "mining" from "What does mining mean?" unless "mining" was either included in a phrase list, or a list entity. In addition to what Nicolas R said about tagging different values, another thing to consider is that using words not commonly found (or found at all) in the corpuses that LUIS uses for each culture will likely result in LUIS not extracting the words without assistance (either via Phrase list or list entity).
For example, if you created a LUIS application that dealt with units of measurement, while you might not be required to train it with units such as inch, meter, kilometer or ounce; you would probably have to train it with words like milliradian, parsec, and even other cultural spellings like kilometre. Otherwise these words would most likely not be extracted by LUIS. If a user provided the tokens "Planck unit", LUIS might provide a faulty extraction where it returns "unit" as the measurement entity instead of "Planck unit".
I am working with Luis ai.
I have created multiple intents,utterances,entities.
When I trained the application I found that single utterance is matching with two different intents.Hence I am getting unexpected result.
Is there any solution to resolve the same..
Maybe you have assigned the same utterance to two different intents?
The quickest way to find out is by using a quick ctrl-F in the Json file.
The Json can be downloaded at the overview page at the right side.
I hope this is helpful.
It's normal for an utterance to match against different intents. It might be possible to assign the same utterance to two different intents via the API, but this isn't possible via the portal.
When you get the response from LUIS, it'll provide the "topScoringIntent" along with a list of "intents" that are arranged in descending score order.
If the wrong intent has the leading score, then you'll have to retrain the model with this utterance to mark it with the correct intent.
Lets suppose it is movie bot. I added entity MovieName, and phrase list containing movies. One of the movie name is "Star Wars", and if user misspell it to "Stra Wra" then how I can tackle this issue? Will Bing spell check service help for non English movie names, I'm not sure?
LUIS will not be able to capture misspelled entities by itself unless you provide examples with misspelled entities which is not practical.
So you need to feed the utterances corrected to LUIS.
For Bing spelling correction service you have to try it yourself, but I guess it will handle your case.
If you expect some common misspellings that you expect to be repeated, you could add them in an exchangeable phrase list feature. That will help with the prediction of these misspelled entities.
There are multiple ways to solve this:
Use synonyms with most common mistakes
Have another step in your pipeline (before going to LUIS), which matches user input to possible options and corrects them (even a self made solution would do great, but you can also try to add ElasticSearch with fuzzy queries)