How to add Confidence metric to items in a Custom Extraction Model

Question

Hi Dears;

I am using a Custom Extraction Model which I've trained on numerous receipts, but my problem is that it gives me a confidence score for the overall receipt info like transactionDate, transactionTime, merchantName etc... but not for the table of items there is no confidence level returned (Sample response from the OCR below confidence=None) :

AnalyzedDocument(doc_type=Jawaez_Leb_V7, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=0.0, y=0.0), Point(x=810.0, y=0.0), Point(x=810.0, y=1080.0), Point(x=0.0, y=1080.0)])], spans=[DocumentSpan(offset=0, length=588)], fields={'MerchantAddress': DocumentField(value_type=string, value='Jisr Al Bacha', content=Jisr Al Bacha, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=346.0, y=285.0), Point(x=485.0, y=288.0), Point(x=484.0, y=313.0), Point(x=345.0, y=310.0)])], spans=[DocumentSpan(offset=33, length=13)], confidence=0.823), 'MerchantName': DocumentField(value_type=string, value='Boulangerie El Bacha Keirouz SAL', content=Boulangerie El Bacha Keirouz SAL, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=190.0, y=225.0), Point(x=594.0, y=247.0), Point(x=591.0, y=298.0), Point(x=187.0, y=276.0)])], spans=[DocumentSpan(offset=0, length=32)], confidence=0.732), 'Total': DocumentField(value_type=float, value=None, content=375,000, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=496.0, y=917.0), Point(x=627.0, y=906.0), Point(x=629.0, y=929.0), Point(x=498.0, y=940.0)])], spans=[DocumentSpan(offset=517, length=7)], confidence=0.876), 'TransactionDate': DocumentField(value_type=date, value=None, content=29/01/2025, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=315.0, y=416.0), Point(x=424.0, y=416.0), Point(x=424.0, y=440.0), Point(x=315.0, y=440.0)])], spans=[DocumentSpan(offset=158, length=10)], confidence=0.889), 'TransactionTime': DocumentField(value_type=time, value=None, content=03:52:55 PM, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=432.0, y=416.0), Point(x=547.0, y=417.0), Point(x=547.0, y=441.0), Point(x=432.0, y=440.0)])], spans=[DocumentSpan(offset=169, length=11)], confidence=0.89), 'MerchantPhoneNumber': DocumentField(value_type=integer, value=1766120054, content=01.499992 - 03.965558, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=327.0, y=309.0), Point(x=547.0, y=317.0), Point(x=546.0, y=343.0), Point(x=326.0, y=334.0)])], spans=[DocumentSpan(offset=52, length=21)], confidence=0.862), 'Currency': DocumentField(value_type=string, value='LBP', content=LBP, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=414.0, y=924.0), Point(x=465.0, y=920.0), Point(x=467.0, y=942.0), Point(x=415.0, y=946.0)])], spans=[DocumentSpan(offset=513, length=3)], confidence=0.856), 'Items': DocumentField(value_type=list, value=[DocumentField(value_type=dictionary, value={'Description': DocumentField(value_type=string, value='Water Small', content=Water Small, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=304.0, y=545.0), Point(x=423.0, y=544.0), Point(x=423.0, y=566.0), Point(x=304.0, y=568.0)])], spans=[DocumentSpan(offset=230, length=11)], confidence=None), 'Quantity': DocumentField(value_type=float, value=None, content=1, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=187.0, y=548.0), Point(x=195.0, y=548.0), Point(x=195.0, y=568.0), Point(x=187.0, y=568.0)])], spans=[DocumentSpan(offset=226, length=1)], confidence=None), 'TotalPrice': DocumentField(value_type=float, value=None, content=20,000, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=567.0, y=542.0), Point(x=624.0, y=541.0), Point(x=624.0, y=562.0), Point(x=567.0, y=563.0)])], spans=[DocumentSpan(offset=242, length=6)], confidence=None)}, content=None, bounding_regions=[], spans=[], confidence=None), DocumentField(value_type=dictionary, value={'Description': DocumentField(value_type=string, value='Pain Arabe', content=Pain Arabe, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=306.0, y=571.0), Point(x=414.0, y=570.0), Point(x=414.0, y=592.0), Point(x=306.0, y=594.0)])], spans=[DocumentSpan(offset=251, length=10)], confidence=None), 'Quantity': DocumentField(value_type=float, value=None, content=1, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=188.0, y=575.0), Point(x=196.0, y=575.0), Point(x=196.0, y=594.0), Point(x=188.0, y=594.0)])], spans=[DocumentSpan(offset=249, length=1)], confidence=None), 'TotalPrice': DocumentField(value_type=float, value=None, content=65,000, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=567.0, y=565.0), Point(x=624.0, y=565.0), Point(x=624.0, y=587.0), Point(x=567.0, y=587.0)])], spans=[DocumentSpan(offset=262, length=6)], confidence=None)}, content=None, bounding_regions=[], spans=[], confidence=None), DocumentField(value_type=dictionary, value={'Description': DocumentField(value_type=string, value='Ajine Mne2ish Abyad', content=Ajine Mne2ish Abyad, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=306.0, y=597.0), Point(x=510.0, y=593.0), Point(x=510.0, y=618.0), Point(x=306.0, y=622.0)])], spans=[DocumentSpan(offset=273, length=19)], confidence=None), 'Quantity': DocumentField(value_type=float, value=None, content=1, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=188.0, y=601.0), Point(x=196.0, y=601.0), Point(x=197.0, y=620.0), Point(x=189.0, y=621.0)])], spans=[DocumentSpan(offset=269, length=1)], confidence=None), 'TotalPrice': DocumentField(value_type=float, value=None, content=95,000, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=568.0, y=591.0), Point(x=623.0, y=590.0), Point(x=623.0, y=613.0), Point(x=568.0, y=614.0)])], spans=[DocumentSpan(offset=293, length=6)], confidence=None)}, content=None, bounding_regions=[], spans=[], confidence=None), DocumentField(value_type=dictionary, value={'Description': DocumentField(value_type=string, value='Toast Asmar tary', content=Toast Asmar tary, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=308.0, y=623.0), Point(x=477.0, y=621.0), Point(x=477.0, y=644.0), Point(x=308.0, y=646.0)])], spans=[DocumentSpan(offset=302, length=16)], confidence=None), 'Quantity': DocumentField(value_type=float, value=None, content=1, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=189.0, y=627.0), Point(x=197.0, y=627.0), Point(x=196.0, y=647.0), Point(x=188.0, y=646.0)])], spans=[DocumentSpan(offset=300, length=1)], confidence=None), 'TotalPrice': DocumentField(value_type=float, value=None, content=195,000, bounding_regions=[BoundingRegion(page_number=1, polygon=[Point(x=559.0, y=617.0), Point(x=625.0, y=615.0), Point(x=626.0, y=637.0), Point(x=559.0, y=639.0)])], spans=[DocumentSpan(offset=319, length=7)], confidence=None)}, content=None, bounding_regions=[], spans=[], confidence=None)], content=None, bounding_regions=[], spans=[], confidence=None), 'Subtotal': DocumentField(value_type=float, value=None, content=None, bounding_regions=[], spans=[], confidence=0.966)}, confidence=0.987)