Real-time Recommendation
Parameter | Mandatory | Description | Type | Value Range | Default Value |
|---|---|---|---|---|---|
sources | Yes | Vertex ID. Multiple vertices are supported. | String | The number of source vertices cannot exceed the upper limit (30 by default, which can be changed using source_limit). Use commas (,) to separate the IDs. | - |
alpha | No | Weight coefficient. A larger value indicates a longer step. | Double | A real number between 0 and 1 (excluding 0 and 1) | 0.85 |
N | No | Total number of walk steps | Integer | 1 to 200000 | 10000 |
nv | No | Parameter indicating that the walk process ends ahead of schedule: minimum number of access times of a potential recommended vertex NOTE: If a vertex is accessed during random walk and the number of access times reaches nv, the vertex will be recorded as the potential recommended vertex. | Integer | 1 to 10 | 5 |
np | No | Parameter indicating that the walk process ends ahead of schedule: number of potential recommended vertices NOTE: If the number of potential recommended vertices of a source vertex reaches np, the random walk for the source vertex ends ahead of schedule. | Integer | 1 to 2000 | 1000 |
label | No | Expected type of the vertex to be output. NOTE:
| String | Vertex label | - |
directed | No | Whether to consider the edge direction | Boolean | true or false | true |
source_limit | No | Maximum number of source vertices | Int | 1~100000 | 30 |
restricted | No | Whether to accept invalid source vertices restricted=true: If a vertex that does not exist in the graph is passed to sources, an error is reported. restricted=false: A vertex that does not exist in the graph can be passed to sources. However, if all source vertices do not exist, an error is reported. | Bool | true or false | true |
Parameter | Type | Description |
|---|---|---|
score | List | Score of each vertex, which reflects the recommendation degree. A larger value indicates a higher recommendation degree. The format is as follows: [{vertexId: scoreValue},...] where vertexId is of the string type. scoreValue is of the double type. |
sources | List | ID of the source vertex |