Data Quality


Data cleaning in Python: some examples from cleaning Airbnb data

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I previously worked for a year and a half at an Airbnb property management company, as head of the team responsible for pricing, revenue and analysis. One thing I find particularly interesting is how to figure out what price to charge for a listing on the site. Although'it's a two bedroom in Manchester' will get you reasonably far, there are actually a huge number of factors that can influence a listing's price. As part of a bigger project on using deep learning to predict Airbnb prices, I found myself thrown back into the murky world of property data. Geospatial data can be very complex and messy -- and user-entered geospatial data doubly so.


Practical Strategies to Handle Missing Values - DZone AI

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One of the major challenges in most BI projects is to figure out a way to get clean data. This is true for both BI and Predictive Analytics projects. To improve the effectiveness of the data cleaning process, the current trend is to migrate from the manual data cleaning to more intelligent machine learning-based processes. Before we dig into figuring out how to handle missing values, it's critical to figure out the nature of the missing values. There are three possible types, depending on if there exists a relationship between the missing data with the other data in the dataset.


What To Know About The Impact Of Data Quality And Quantity In AI

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Believe it or not, there is such a thing as "good data"and "bad data" -- especially when it comes to AI. To be more specific, just having data available isn't enough: There's a distinction worth making between "useful" and "not-so-useful" data. Sometimes data must be discarded on sight because of how or where it got collected, signs of inaccuracy or forgery and other red flags. Other times, data can get processed first, then passed on for use in artificial intelligence development. A closer look at this process reveals a symbiotic relationship between our ability to gather data and process it -- and our ability to build ever-smarter artificial intelligence.


Artificial Intelligence Enabled audience profiling in MoMAGIC

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"Sell the right product to the right customer" is a dream of every marketers and advertisers. As a leading digital marketing company in Asia, MoMAGIC is approaching this ultimate goal by launching two data-driven solutions: TrueReach and TrueInsight, which is capable of understanding and targeting audiences from both macroscopic and microscopic point of view. In this article, we will share the core ideas behind our solutions and some insights we learned when playing with large-scale real data. As the backbone of all MoMAGIC services, TrueInsight integrates large-scale, heterogeneous data sources (e.g., AD-request, web behaviors, etc.) and transforms those high-frequent, noisy dataflows into structured datasets. In order to complete those challenging tasks quickly and accurately, we first carefully designed the data processing pipelines of TrueInsight in a parallel and distributed manner to guarantee its performance scalability, which means TrueInsight can process large-scale data from multiple sources without scarifying its performance.


Training a Neural Speech Waveform Model using Spectral Losses of Short-Time Fourier Transform and Continuous Wavelet Transform

arXiv.org Machine Learning

Recently, we proposed short-time Fourier transform (STFT)-based loss functions for training a neural speech waveform model. In this paper, we generalize the above framework and propose a training scheme for such models based on spectral amplitude and phase losses obtained by either STFT or continuous wavelet transform (CWT), or both of them. Since CWT is capable of having time and frequency resolutions different from those of STFT and is cable of considering those closer to human auditory scales, the proposed loss functions could provide complementary information on speech signals. Experimental results showed that it is possible to train a high-quality model by using the proposed CWT spectral loss and is as good as one using STFT-based loss.


AI Needs Better Data, Not Just More Data

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AI has a data quality problem. In a survey of 179 data scientists, over half identified addressing issues related to data quality as the biggest bottleneck in successful AI projects. Big data is so often improperly formatted, lacking metadata, or "dirty," meaning incomplete, incorrect, or inconsistent, that data scientists typically spend 80 percent of their time on cleaning and preparing data to make it usable, leaving them with just 20 percent of their time to focus on actually using data for analysis. This means organizations developing and using AI must devote huge amounts of resources to ensuring they have sufficient amounts of high-quality data so that their AI tools are not useless. As policymakers pursue national strategies to increase their competitiveness in AI, they should recognize that any country that wants to lead in AI must also lead in data quality.


5 Challenges Faced By The Artificial Intelligence Industry - Techiexpert.com

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We know how the artificial intelligence field is growing which is also creating major changes in our lifestyles, day by day many things are getting better and with the help of this technology, we humans are getting more closer to the machines, the sci-fi movies that we used to watch with trill is going to become the reality soon and we are going to move in the robots era where every machine will able to understand us and our requirements. Apart from this, the major role will be played when they will be customized for the each one of us we will be bind without own device which not only solves some technical issues of our but also helps us to become the better human in nature. But also have to keep in mind that this can also be destructive if it is command by the destructive person. Creating a machine that can understand the natural language and act naturally similar to human nature is tough but still everyone is working to make this sci-fi theories true which helps human beings to make their life easier then now, though the development we are seeing on the daily basis is worth appreciable as many of the challenges and failures are being faced by these technology developers and researchers but still they are getting together and solving this problem. For the better development of the machines, the data that are collected to do the predictions, as well as some calculations, should be precise and correct as it can affect the performance of the machine, not only that but noisy data can also create errors during computation and working.


Can a $3 Trillion Problem Really be Hidden?

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That's the amount The Harvard Business Review (HBR) says poor quality data costs companies in the USA each year. According to a published article, HBR says much of the bad data costs come from the adjustments workers, decision makers, and managers make in their daily work to deal with data they know or believe to be wrong. The costs pile up because no one has time to fix problems at the source. Faced with deadlines, workers adjust the data in front of them well enough to complete their part of a process and send the data along to the next step. HBR calls these extra steps "The Hidden Data Factory" and point out that these processes create no added value.


AI Efforts at Large Companies May Be Hindered by Poor Quality Data

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Large firms are finding that poor-quality customer and business data may be keeping them from leveraging digital tools to cut costs, boost revenues, and remain competitive, according to a survey by PricewaterhouseCoopers. Poor-quality customer and business data may be keeping companies from leveraging artificial intelligence (AI) and other digital tools to reduce costs, increase revenue, and stay competitive, according to a recent PriceWaterhouseCoopers (PwC) survey of 300 executives at U.S. companies in a range of industries with revenue of $500 million or more. While 76% of survey respondents said their firms want to extract value from the data they already have, just 15% said they currently have the right kind of data needed to achieve that goal. Most of the respondents said their firms see tremendous upside opportunity in fully optimizing the data they already have, but face multiple obstacles to achieving that goal including the quality limitations of the data. Companies working with older, unreliable data need to first assess that data by identifying its source, gauging its accuracy, and standardizing data formats and labels, according to PwC.


How AI and Big Data are Improving Research Results Qualtrics

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Market research is a $44.5 B market and growing. Online research is among the fastest growing parts of the market thanks to the pervasiveness of the web and the ease with which we can now collect data. However, as the world conducts more and more survey research, the issues that we see elsewhere with big data are now affecting the survey research industry as well, specifically the issue of data quality. Thanks to the growth in online survey research, billions of survey responses are collected every year. But 1/4th of those responses are of poor quality[1].