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All Blog Posts Tagged 'filtering' (3)

Collaborative Filtering Recommender Systems - Item Based approach



In the series of implementing Recommendation engines, in my previous blog about recommendation system in R, I have explained about…
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Added by suresh kumar Gorakala on November 23, 2015 at 7:04pm — No Comments

Processing Structured Text in Java–Conditional Filtering

Following problems will arise if you perform conditional filtering on text files in Java alone: 

1. The text file is not a database,so it cannot be accessed by SQL. The code needs to be modified if filtering conditions are changed. Besides, if you want a flexible conditional filtering as that in SQL, you have to self-program the dynamic expression parsing and evaluating, resulting in a great amount of programming work.

2. Stepwise loading is required for the big files that…

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Added by Lynn Guo on November 23, 2014 at 6:00pm — No Comments

Calculation cases of Link Relative Ratio and Year-on-year Comparison in data analytics

Cross-row and group computation often involves computing link relative ratio and year-on-year comparison. Link relative ratio refers to comparison between the current data and data of the previous period. Generally, it takes month as the time interval. For example, compare the sales amount of April with that of March, and the growth rate we get is the link relative ratio of April. Hour, day, week and quarter can also be used as the time…

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Added by Jessica May on September 22, 2014 at 2:00am — No Comments

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