<![CDATA[Weights different in testing and submission]]>Hi @support

The strategy submitted to the Q17 is giving different weights after submission and in the testing phase. For instance, the q17_2 strategy is giving non-negative weights to all assets on 01/01/2014 when I cloned the strategy and run the code on the Quantiacs server whereas the weights I downloaded from the q17_2 submitted log give negative weight to some assets on 01/01/2014. Could you please help me with that?

]]>http://quantiacs.com/community/topic/203/weights-different-in-testing-and-submissionRSS for NodeSun, 12 Apr 2026 02:47:48 GMTTue, 19 Apr 2022 01:31:14 GMT60<![CDATA[Reply to Weights different in testing and submission on Fri, 22 Apr 2022 15:30:34 GMT]]>@antinomy thanks!

]]>http://quantiacs.com/community/post/676http://quantiacs.com/community/post/676Fri, 22 Apr 2022 15:30:34 GMT<![CDATA[Reply to Weights different in testing and submission on Thu, 21 Apr 2022 19:42:15 GMT]]>About the slicing error, I had that too a while ago. It took me some time to figure out that it wasn't enough to have the right pandas version in the environment. Because I had another python install with the same version in my PATH, the qntdev-python also looked there and always used the newer pandas. So I placed the -s flag everywhere the qntdev python is supposed to run (PyCharm, Jupyter, terminal) like this

/path/to/quantiacs/python -s strategy.py

Of course one could simply remove the other python install from PATH but I needed it there.

]]>http://quantiacs.com/community/post/675http://quantiacs.com/community/post/675Thu, 21 Apr 2022 19:42:15 GMT<![CDATA[Reply to Weights different in testing and submission on Thu, 21 Apr 2022 16:12:38 GMT]]>@anshul96go It looks some conflict is going on there, can you check which version of pandas are you using? It has to be 1.2.5.

Maybe try to create a new environment using:

conda create -n qntdev quantiacs-source::qnt conda-forge::ta-lib conda-forge::pandas==1.2.5 conda-forge::dash==1.18 python==3.7

]]>http://quantiacs.com/community/post/672http://quantiacs.com/community/post/672Thu, 21 Apr 2022 16:12:38 GMT<![CDATA[Reply to Weights different in testing and submission on Thu, 21 Apr 2022 11:52:45 GMT]]>@support Thanks for the help team! Ahh, that makes sense. I am trying to run it.

Also, there is one more issue coming up. On creating a local development environment today, the load data function is failing with the following error: "cannot represent labeled-based slice indexer for dimension 'time' with a slice over integer positions; the index is unsorted or non-unique". Could you please look into that too?

]]>http://quantiacs.com/community/post/669http://quantiacs.com/community/post/669Thu, 21 Apr 2022 11:52:45 GMT<![CDATA[Reply to Weights different in testing and submission on Wed, 20 Apr 2022 14:08:16 GMT]]>@anshul96go Hello, are you using the backtester with retraining option? Can you try setting the retraining interval to 1 day?

]]>http://quantiacs.com/community/post/668http://quantiacs.com/community/post/668Wed, 20 Apr 2022 14:08:16 GMT