Good Night, when I do a forecast in ARIMA model, por example AR(1), the result is a straight line. I see that when we use a "Dynamic Forecast", the result is not a straight line. ¿Who can i do a dynamic forecast or package in R that do this?
check this out Arrima R. It may be helpful to you.
Related
When trying to upload the fasttext model (cc.nl.300.bin) in gensim I get the following error:
!wget https://dl.fbaipublicfiles.com/fasttext/vectors-crawl/cc.nl.300.bin.gz
!gunzip cc.nl.300.bin.gz
model = FastText_gensim.load_fasttext_format('cc.nl.300.bin')
model.build_vocab(cleaned_text, update=True)
AttributeError: 'FastTextTrainables' object has no attribute 'syn1neg'
The code goes wrong when building the vocab with my own dataset. The format of that dataset is all right, as I already used it to build and train other (not pre-trained) Word2Vec and FastText models.
I saw other had the same error on this blog, however their solution did not work for me: https://github.com/RaRe-Technologies/gensim/issues/2588
Also, I read somewhere that I should use 'load_facebook_model'? However I was not able to import load_facebook_model at all? Is this even a good way to solve this problem?
Any other suggestions?
Are you sure you're using the latest version of Gensim, 4.0.1, with many improvements to the FastText implementation?
And, there you will definitely want to use .load_facebook_model() to load a full .bin Facebook-format model:
https://radimrehurek.com/gensim/models/fasttext.html#gensim.models.fasttext.load_facebook_model
But also note: the post-training expansion of the vocabulary is best considered an advanced & experimental function. It may not offer any improvement on typical tasks - indeed, without careful consideration of tradeoffs & balancing influence of later traiing against earlier, it can make things worse.
A FastText model trained on a large, diverse corpus may already be able to synthesize better-than-nothing guess vectors for out-of-vocabulary words, via its subword vectors.
If there's some data with very-different words & word-senses you need to integrate, it will often be better to re-train from scratch, using an equal combination of all desired text influences. Then you'll be doing things in a standard and balanced way, without harder-to-tune and harder-to-evaluate improvised changes to usual practice.
I am trying to create a dataset for training RASA ner_crf for one type of entity. Please let me know the minimum number of sentences/variation_in_sentence_formation for good result. When I have one type of each of the possible sentence NER_CRF is not giving good result.
Rasa entity extraction depends heavily on the pipeline you have defined. Also depends on language model and tokenizers. So make sure you use good tokenizer. If it is normal English utterances try using tokenizer_ spacy before ner_crf. Also try with ner_spacy
As per my experience, 5 to 10 variations of utterances for each case gave a decent result to start with
I have been searching how to create a new entity in google natural language API, and found nothing. Can anybody help how to create a new classifier such that if I pass a sentence and I want to detect suppose 'python' as programming language then how would I get that. Current the API is giving 'python' as 'other'.
I have also looked into cloud auto ml api for my solution and tried to create and train a model but It was only able to do sentiment analysis not entity detection.It was giving me the score rather than telling me that Java is programming language.
Thanks in advance.Your help will be appreciated.
Automl content classification classifies your data into the labels specified in the training set. It does not do entity detection. But it seems like what you need to do is closer to content classification than entity detection. My understanding from the description you provided is that you have content (may be words or phrases or short sentences) and you want to classify them into some labels (e.g. programmingLanguage). If you put together a good training set, the automl model should be able to do this.
The number it provides in eval is not sentiment, it's the probability of the predicted label. As you can see in the eval page you posted, it's telling you that java is a programmingLanguage with probability of 1 (so, it's very certain about it).
I used NER of StanfordCoreNLP to recognize the entity including organization, location and person. But there exists something weird. For example, I input a sentence like "Cleveland Cavaliers" and it will recognize the 'Cleveland' as 'location' but not 'Cleveland Cavaliers' as organization.
I am not very familiar with the ner and I don't know how the NER works. My task is to get all the company name in the text and the result I have got is not very satisfactory. So there are two ways occuring to me to solve the problem. The first is to modify the dict and insert the correct data. The second is to train the model. But there are still some questions.
Will the first way work effectively?
If the answer of question 1 is yes, how to modify the dict?
Further more, the FAQ list at https://nlp.stanford.edu/software/crf-faq.shtml#a proposed the way to train the ner model but what confused me most is what I will get if I trained my model.
If I create a dataset containing like
"organization 'Cleveland
Cavaliers'"
to train the model, what will happen in the model? The dict inside the CRFClassifier will change?
Will the CRFClassifier modify the bug when I input 'Cleveland Cavaliers' and recognize the 'Cleveland Cavaliers' as an organization entity?
These are all my puzzles and I am preparing the dataset to try the second way. Can anybody answer the 4 questions above?
Thanks
I think the first solution is not very technical and every time you want to tag a new company, you need to update your dictionary.
I prefer your second solution and I do this before and trained a new model to tag my sentences.
If you have a good corpus that is big enough which tagged properly, It may take some time to train, but it worth the effort.
I need to develop an application that will index several texts and I need to search for people’s names inside these texts. The problem is that, while a person’s correct name is “Gregory Jackson Junior”, inside the text, the name might me written as:
- Greg Jackson Jr
- Gegory Jackson Jr
- Gregory Jackson
- Gregory J. Junior
I plan to index the texts on a nightly bases and build a database index to speed up the search. I would like recommendation for good books and/or good articles on the subject.
Thanks
Check these related questions.
Algorithm to find articles with similar text
How to search for a person's name in a text? (heuristic)
Your question is incorrectly phrased. The examples do not indicate misspelling but change in the form of writing a full name.
And,
would your search expect to match on words like son with reference to the example?
would it expect to match bob when looking for a name called Robert?
Are you looking for things like this and this?
Ok, reading your comment suggests you do not want to venture into that.
For the record. Use a Bayesian filter. You may use mechanical truck for initializing your algorithm.