## 3 Material and Methods
### HMP-Coffee Model
#### 3.2.1 Contextual Knowledge Phase
* **Level 5 (Medium Generality)** contains execution time in crop activities (t18), investment in fertilization activities (24). * **Level 6 (Specific)** contains time spent on fertilization (t1), time spent on renovation (t2), time spent on Weed/Pest and diseases control (t3), price of the workforce (t4),  
Figure 6: HMP-Coffee conceptual model. Level 1 contains the output variable profitability (vo). Level 2 the global variable production cost (gv1), production volume (gv2) and market (gv3); level 3,4,5 contain 10 aggregate attributes: management expenses (t21), investment in harvest time (t22), investment in crop care activities (t23), labor of the crop (t19), investment on supplies (t20), execution time in crop activities (t18), investment in fertilization activities (24); level 6 includes 17 basic attributes: time spent on fertilization (t1), time spent on renovation (t2), time spent on weed/pest and diseases control (t3), price of the workforce (t4), investment in chemical fertilizers (t5), investment in organic fertilizers (t6), investment in weeds supplies(t7), investment in renovation supplies (t8), investment in maintenance (t9), transportation expenses (t10), payment for coffee harvesting(t11), implements for coffee pickers (12), investment in benefice coffee process (t13), investment in thresh coffee process (t14), variation in the USD price (t15) and New York stock coffee price (t16), and coffee production volume (t17). investment in chemical fertilizers (t5), investment in organic fertilizers (t6), investment in weeds supplies(t7), investment in renovation supplies (t8), investment in maintenance (t9), transportation expenses (t10), payment for coffee harvesting(t11), implements for coffee pickers (12), investment in benefice coffee process (t13), investment in thresh coffee process (t14), variation in the USD price (t15) and the coffee price in the New York Stock Exchange (t16), and coffee production volume (t17). By relationship:
* **Profitability** is related to production cost (gv1), production volume (gv2), and market (gv3). * **Production Cost** has association with 20 concepts: time spent on fertilization (t1)/level 6, time spent on renovation (t2)/level 6, time spent on weed/pest and diseases control (t3)/level 6, price of workforce (t4)/level 6, investment in chemical fertilizers (t5)/level 6, investment in organic supplies (t6)/level 6, investment in weeding supplies(t7)/level 6, investment in renovation supplies (t8)/level 6, investment in maintenance (t9)/level 6, transportation expenses (t10)/level 6, payment for coffee harvesting(t11)/level 6, implements for coffee pickers (t12)/level 6, investment in postharvest processing (t13)/level 6, investment in thresh coffee process (t14)/level 6, execution time in crop activities (t18)/level 5, labor of the crop (t19)/level 4, investment on supplies (t20)/level 4, management expenses (t21)/level 3, investment in harvest time (t22)/level 3, investment in crop care activities (t23)/level 3, and investment in fertilization activities (t24)/level 5. * **Production volume** has a relationship with the concept coffee production volume (t17)/level 6. * **Market** has association with two concepts: variation in the USD price (t15)/level 6 and the coffee price in the New York Stock Exchange (t16)/level 6. Figure 6 presents the hierarchical conceptual HMP-Coffee model obtained by the Contextual Knowledge Phase.