NLP is a challenging field. Human language is rarely precise, at times ambiguous and often requires context. To understand human language is to understand not only the words, but the concepts being communicated and how they’re connected together to create meaning. Despite language being one of the easiest things for humans to learn, the ambiguity of language makes natural language processing a difficult problem for computers to master.
Conducting NLP is often a laborious undertaking. In practice, it’s not a matter of simply developing an algorithm and letting a computer do the work. First, it is necessary to prepare and clean the data. Following data processing, repetitive, time-consuming and hands-on trial and error experiments must be conducted manually. However, our proprietary and scalable framework changes all of this by ‘gluing’ various NLP methods together, automating them and allowing you to use them iteratively to refine your model. When applied, our framework allows you to bootstrap your big data, quickly assess it and get to market faster than your competitors.
- Syntactic parsing
- POS tagging
- Named Entity Recognition
- Frequency features
- Word embeddings (i.e. word2vec, glove)
- Sentiment Analysis
- Named Entity Recognition
- Text Summarization
- Topic Extraction
First, we obtain data from the client in whatever format they provide. We use automatic routines to transform this raw data into a standardized format to make processing easier. Then, we start a typical data science processing flow, starting from data cleaning (e.g. removing HTML tags, performing noise removal based on regular expressions as well as keyword replacing, character cleaning and character filtering). From there, we perform sentence and word tokenizations.
Next, we begin the exploratory process where we analyze the data, draw charts, histograms, extract task-related features and calculate various statistics. Then, we proceed to feature engineering. We have models for Named Entity Recognition, POS tagging, dependency parsing, TF-IDF and word embeddings. As a result of the process described above, the pre-processed dataset is ready to be fed into ML models. Here, the first iteration ends. From this point, we analyze the results, and, if they are not adequate, tweak the previous stages to improve overall performance. This is the next iteration.
This process is generally sequential, as one stage comes after the other. However, in practice, each stage performs its task with multiple sets of parameters and the result of every run is passed to the next stage. In this way, the process is more like a graph or a tree—not a sequence—and is somewhat similar to neural nets insofar as they relate to how computing nodes are organized. Also, this method stores all intermediate results. So, if only the second stage from the end of the pipeline is changed, then only the last two stages will be re-computed.
Once the steps in this methodology are completed and a certain desired level of accuracy is reached, the end result is a custom NLP framework based on the original input data.
Please reach out to us directly to learn more about our NLP Framework.