Here is step by step:
Prerequisites: Gradle, Intellij Idea. (and JDK for sure).
Clone or download demo of LensKit from here, https://github.com/lenskit/lenskit-hello
We can play first with the movie recommendation data in CSV files in the "data" folder.
- Run Intellij Idea.
- Choose "Import Project".
- Navigate to the folder of "lenskit-hello". Click OK.
- On the dialog, select "Import project from external model".
Then select "Gradle", next.. - Select "Use local gradel distribution" if you want to use existing local gradle, otherwise (e.g. you want to update it) unselect.
- For local, set Gradle home to your gradle installation (GRADLE_HOME), for example "D:/gradle-3.1".
Gradle will download all dependencies (in case for the first time), i.e. the lenskit, fastutil, etc.
Now Build the project.
Finally, Run..
As example, set Run configuration as follow: ("Application").
- Main class = org.grouplens.lenskit.hello.HelloLenskit
- Use classpath of module: lenskit-hello-master_main
- Try "program arguments" = 72 for userid=72, we want to get recommendation for user 72.
Apply, Run..
Here is the output,
INFO o.l.d.d.f.TextEntitySource - loading text file source ratings to read from file:/D:/LensKit/lenskit-hello-master/data/ratings.csv
INFO o.l.d.d.f.TextEntitySource - loading text file source items to read from file:/D:/LensKit/lenskit-hello-master/data/movies.csv
INFO o.l.d.d.f.TextEntitySource - loading text file source tags to read from file:/D:/LensKit/lenskit-hello-master/data/tags.csv
INFO o.l.d.d.f.StaticDataSource - deriving entity type EntityType[user] from EntityType[rating] (column TypedName[user: long])
INFO o.l.d.d.f.StaticDataSource - deriving entity type EntityType[item] from EntityType[rating] (column TypedName[item: long])
INFO o.l.c.ConfigurationLoader - loading script from file:/D:/LensKit/lenskit-hello-master/etc/item-item.groovy
INFO o.l.d.r.RatingSummaryProvider - summarized 8915 items with 100234 ratings
INFO o.l.k.i.m.ItemItemBuildContextProvider - constructing build context
INFO o.l.k.i.m.ItemItemModelProvider - building item-item model for 8915 items
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 100 of 8915 (0.01%, 0.005s/row, ETA 47.162s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 200 of 8915 (0.02%, 0.004s/row, ETA 38.043s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 300 of 8915 (0.03%, 0.004s/row, ETA 35.507s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 400 of 8915 (0.04%, 0.004s/row, ETA 34.930s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 500 of 8915 (0.06%, 0.004s/row, ETA 35.098s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 600 of 8915 (0.07%, 0.004s/row, ETA 33.451s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 700 of 8915 (0.08%, 0.004s/row, ETA 31.619s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 800 of 8915 (0.09%, 0.004s/row, ETA 32.728s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 900 of 8915 (0.10%, 0.004s/row, ETA 31.372s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 1000 of 8915 (0.11%, 0.004s/row, ETA 30.438s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 1100 of 8915 (0.12%, 0.004s/row, ETA 30.989s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 1200 of 8915 (0.13%, 0.004s/row, ETA 30.025s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 1300 of 8915 (0.15%, 0.004s/row, ETA 28.695s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 1400 of 8915 (0.16%, 0.004s/row, ETA 27.806s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 1500 of 8915 (0.17%, 0.004s/row, ETA 26.741s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 1600 of 8915 (0.18%, 0.004s/row, ETA 26.098s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 1700 of 8915 (0.19%, 0.004s/row, ETA 25.516s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 1800 of 8915 (0.20%, 0.004s/row, ETA 24.910s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 1900 of 8915 (0.21%, 0.003s/row, ETA 24.237s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 2000 of 8915 (0.22%, 0.003s/row, ETA 23.672s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 2100 of 8915 (0.24%, 0.003s/row, ETA 23.010s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 2200 of 8915 (0.25%, 0.003s/row, ETA 22.832s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 2300 of 8915 (0.26%, 0.003s/row, ETA 22.237s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 2400 of 8915 (0.27%, 0.003s/row, ETA 21.647s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 2500 of 8915 (0.28%, 0.003s/row, ETA 21.054s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 2600 of 8915 (0.29%, 0.003s/row, ETA 20.486s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 2700 of 8915 (0.30%, 0.003s/row, ETA 19.916s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 2800 of 8915 (0.31%, 0.003s/row, ETA 19.285s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 2900 of 8915 (0.33%, 0.003s/row, ETA 18.703s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 3000 of 8915 (0.34%, 0.003s/row, ETA 18.142s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 3100 of 8915 (0.35%, 0.003s/row, ETA 17.530s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 3200 of 8915 (0.36%, 0.003s/row, ETA 16.954s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 3300 of 8915 (0.37%, 0.003s/row, ETA 16.503s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 3400 of 8915 (0.38%, 0.003s/row, ETA 15.940s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 3500 of 8915 (0.39%, 0.003s/row, ETA 15.441s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 3600 of 8915 (0.40%, 0.003s/row, ETA 14.872s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 3700 of 8915 (0.42%, 0.003s/row, ETA 14.330s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 3800 of 8915 (0.43%, 0.003s/row, ETA 13.839s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 3900 of 8915 (0.44%, 0.003s/row, ETA 13.405s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 4000 of 8915 (0.45%, 0.003s/row, ETA 13.045s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 4100 of 8915 (0.46%, 0.003s/row, ETA 12.600s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 4200 of 8915 (0.47%, 0.003s/row, ETA 12.194s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 4300 of 8915 (0.48%, 0.003s/row, ETA 11.766s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 4400 of 8915 (0.49%, 0.003s/row, ETA 11.333s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 4500 of 8915 (0.50%, 0.002s/row, ETA 10.937s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 4600 of 8915 (0.52%, 0.002s/row, ETA 10.538s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 4700 of 8915 (0.53%, 0.002s/row, ETA 10.164s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 4800 of 8915 (0.54%, 0.002s/row, ETA 9.819s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 4900 of 8915 (0.55%, 0.002s/row, ETA 9.449s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 5000 of 8915 (0.56%, 0.002s/row, ETA 9.092s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 5100 of 8915 (0.57%, 0.002s/row, ETA 8.532s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 5200 of 8915 (0.58%, 0.002s/row, ETA 8.146s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 5300 of 8915 (0.59%, 0.002s/row, ETA 7.703s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 5400 of 8915 (0.61%, 0.002s/row, ETA 7.265s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 5500 of 8915 (0.62%, 0.002s/row, ETA 6.779s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 5600 of 8915 (0.63%, 0.002s/row, ETA 6.390s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 5700 of 8915 (0.64%, 0.002s/row, ETA 6.055s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 5800 of 8915 (0.65%, 0.002s/row, ETA 5.687s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 5900 of 8915 (0.66%, 0.002s/row, ETA 5.360s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 6000 of 8915 (0.67%, 0.002s/row, ETA 5.014s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 6100 of 8915 (0.68%, 0.002s/row, ETA 4.564s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 6200 of 8915 (0.70%, 0.002s/row, ETA 4.247s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 6300 of 8915 (0.71%, 0.002s/row, ETA 3.991s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 6400 of 8915 (0.72%, 0.001s/row, ETA 3.711s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 6500 of 8915 (0.73%, 0.001s/row, ETA 3.473s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 6600 of 8915 (0.74%, 0.001s/row, ETA 3.211s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 6700 of 8915 (0.75%, 0.001s/row, ETA 2.953s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 6800 of 8915 (0.76%, 0.001s/row, ETA 2.711s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 6900 of 8915 (0.77%, 0.001s/row, ETA 2.488s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 7000 of 8915 (0.79%, 0.001s/row, ETA 2.266s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 7100 of 8915 (0.80%, 0.001s/row, ETA 2.066s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 7200 of 8915 (0.81%, 0.001s/row, ETA 1.825s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 7300 of 8915 (0.82%, 0.001s/row, ETA 1.648s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 7400 of 8915 (0.83%, 0.001s/row, ETA 1.478s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 7500 of 8915 (0.84%, 0.001s/row, ETA 1.320s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 7600 of 8915 (0.85%, 0.001s/row, ETA 1.171s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 7700 of 8915 (0.86%, 0.001s/row, ETA 1.032s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 7800 of 8915 (0.87%, 0.001s/row, ETA 0.910s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 7900 of 8915 (0.89%, 0.001s/row, ETA 0.792s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 8000 of 8915 (0.90%, 0.001s/row, ETA 0.682s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 8100 of 8915 (0.91%, 0.001s/row, ETA 0.585s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 8200 of 8915 (0.92%, 0.001s/row, ETA 0.494s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 8300 of 8915 (0.93%, 0.001s/row, ETA 0.400s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 8400 of 8915 (0.94%, 0.001s/row, ETA 0.322s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 8500 of 8915 (0.95%, 0.001s/row, ETA 0.247s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 8600 of 8915 (0.96%, 0.001s/row, ETA 0.182s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 8700 of 8915 (0.98%, 0.001s/row, ETA 0.120s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 8800 of 8915 (0.99%, 0.001s/row, ETA 0.062s)
INFO o.l.k.i.m.ItemItemModelProvider - item-item model build: finished 8900 of 8915 (1.00%, 0.001s/row, ETA 0.008s)
INFO o.l.k.i.m.ItemItemModelProvider - built model of 29236544 similarities for 8915 items in 12.968s
INFO o.g.l.hello.HelloLenskit - built recommender engine
INFO o.g.l.hello.HelloLenskit - obtained recommender from engine
Recommendations for user 72:
1771 (Night Flier (1997)): 5.71
2189 (I Married A Strange Person! (1997)): 5.71
2920 (Children of Paradise (Les enfants du paradis) (1945)): 5.71
6939 (Gloomy Sunday (Ein Lied von Liebe und Tod) (1999)): 5.71
1412 (Some Mother's Son (1996)): 5.68
90524 (Abduction (2011)): 5.66
40412 (Dead Man's Shoes (2004)): 5.65
49330 (London to Brighton (2006)): 5.65
6530 (Tenant, The (Locataire, Le) (1976)): 5.65
50651 (Kenny (2006)): 5.65
Process finished with exit code 0
Note: As per my recommendation, if you are unstable, please don't watch the recommended "Gloomy Sunday" movie, because the song is known to drive people to suicide (including the singers).
./
