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| Parameter, baseline market demand |
| Parameter, time t |
| Parameter, advertising efficiency to goodwill accumulation |
| Parameter, goodwill decay proportional rate |
| Parameter, advertising lag time |
| Parameter, discount rate |
| Parameter, effectiveness of goodwill to sales |
| Parameter, the offline consumer’s sensibility factor to reference quality effect |
| Parameter, goodwill’s effectiveness to the reference quality |
| Parameter, a latent consumer’s propensity to reach offline physical stores |
| Parameter, the influencing factor of retail price on sales |
| Exogenous variable, advertising cost sharing ratio |
| Variant, the sales volume under O2O model at time |
| Variant, the consumer’s reference quality at time t |
| State variant, the brand goodwill at time |
| Control variant, the retail price at time |
| Control variant, the wholesale price at time |
| Control variant, manufacturer’s advertising effort level at time |
| Control variant, product quality level at time |
| The reference quality effect at time |
| Parameter |
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