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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:' N4 |6 h" b$ ?# R4 [, |6 Y
to do-business 4 @  f" o/ h& @4 Z
rt random 360
/ {4 H0 z+ [8 V8 ~- { fd 16 I0 a) t  i0 g1 N; L& ]
ifelse(other turtles-here != nobody)[) _+ [# ]  {- @2 G7 D
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.) s& |" W5 l0 n! F! h4 B
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ f: b. |+ e) l2 E: I7 g' {! h   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
2 m# y* S$ W. i6 @0 q; w   set [trade-record-one-len] of self length [trade-record-one] of self+ _8 a' h' u. O7 X) P
   set trade-record-current( list (timer) (random money-upper-limit))
* ^. y; ?9 e& r2 E  S/ W: J
, H' S* \' R4 C问题的提示如下:* C5 U0 i8 a( O' X4 X& w

# T0 ~( @; f+ m. }9 oerror while turtle 50 running OF in procedure DO-BUSINESS" a6 p7 B6 a5 d- z' G2 D
  called by procedure GO
' S/ |/ u( x" ~- Z$ V! `OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) A9 O  N, b% E
(halted running of go)  p1 h! [% l% L  z& p& b) i! F

6 }- |2 h0 D1 F这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
2 o# R; d5 m4 f( ~! C另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
( W6 N% k) f- X6 a+ I$ X: f) y  c4 }globals[$ x( S) f) v) {6 M! A3 Q
xmax4 C4 p. J! W* ^8 h
ymax
  J( l( H9 ?7 G8 ~3 Mglobal-reputation-list
, W0 d2 j! V6 s3 j, X. {- o/ B' e5 A& B" ]" ^# g& i
;;
每一个turtle的全局声誉都存在此LIST
. y# F, |0 Q& V# F/ a! h- v! ncredibility-list
* w9 r; o6 n" u;;
每一个turtle的评价可信度# L  q2 \+ R6 T) M# R& V
honest-service3 ^/ Q8 G' `* F. z4 A" H
unhonest-service! E8 e9 i9 v* I6 d7 `
oscillation. L. Q9 M8 F; ^) d
rand-dynamic
  C" v) {. A( }) C- G]. K, i+ Y! z6 }0 |( S7 S, m
! J( n  F2 G# Q$ f' f/ E/ i; C2 F0 {
turtles-own[& t( d6 |- V: s8 }+ V3 a6 O
trade-record-all7 L+ u; c. n2 x/ b  H
;;a list of lists,
trade-record-one组成
- a, c) {5 H* dtrade-record-one- w% P$ k# Z. r4 ~; [" Z+ |, \( Z/ O
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# ?- E! l6 A7 d

0 I& `! N3 b8 s; p9 u;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]! R1 q% L4 W) K* k
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]+ A; S. Y7 y% L0 l
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
, _& ]* W- a& M# x) a9 Hneighbor-total
8 Y: v& Q+ J0 [" E  F5 g% ?& M1 T;;
记录该turtle的邻居节点的数目
+ g2 O7 V% t, Y4 o3 E1 Atrade-time
+ N4 F' m1 V% f. j8 W5 p8 k;;
当前发生交易的turtle的交易时间) ~. N9 C6 M' g, S; A
appraise-give0 O9 V4 w) u! N) j% \/ u+ r/ t' }
;;
当前发生交易时给出的评价' J# h6 @  z# X& V+ I/ B  g
appraise-receive5 r+ H$ N8 v% ~/ V8 @( d: V
;;
当前发生交易时收到的评价
% i0 p7 {! X6 S' Jappraise-time
0 r- }2 n! J* l;;
当前发生交易时的评价时间
8 k5 Z6 |. U. ?$ l8 n7 V) hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉0 K8 U1 g' I2 u; l+ a1 w
trade-times-total* C; Z. g( j% X" {- I' l( p9 p. p
;;
与当前turtle的交易总次数
" o' w' Z1 _: a$ }* j* P2 Strade-money-total
: o2 H) r* s1 }) b/ Z;;
与当前turtle的交易总金额/ P: b! I0 d/ `/ F8 g
local-reputation
1 J3 f! D! D; T/ q% aglobal-reputation
+ o9 d. O2 v* e! T" _$ pcredibility
7 e" H# I9 |, |: l8 C, \4 `. C;;
评价可信度,每次交易后都需要更新2 |3 i7 e. M1 \9 N6 _3 f
credibility-all. ]0 u8 V8 N/ m
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据4 o5 O% d* @" P8 k) C
' K# y5 H1 y, L  i& ~7 T6 |
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
9 K; T. d6 m# P( c0 g" Icredibility-one
) r  y& R. `1 g7 h" v7 s2 F;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
& B) M  A; d( t% q8 W8 h: rglobal-proportion
3 h, l/ F. `0 T, R- ~4 zcustomer
! d" M" Y4 w- g- j) h0 Kcustomer-no- W, j1 E! ]/ u6 @; d! B' n
trust-ok9 g, [3 p# a% M
trade-record-one-len;;trade-record-one的长度+ O* M. b: _+ {8 v2 M# X; X  h
]
6 I' p# I' E- K. @- m
7 a" [. i" z# x" {( T) m;;setup procedure
' J6 _2 G  G/ i- z; i* T* w6 s% f/ u, L5 y: t! r& g! x1 P5 F
to setup
" n. ^  h# j! M7 W' t2 w1 P( T
6 [# i# ?# G8 v& G' Ica

2 P# Q5 u7 E0 M# o/ `4 B  o* c( H, k1 R$ [  r
initialize-settings
% |. t; V- T  f# t2 s
% `8 a  X! a. P- p) u5 _# y
crt people [setup-turtles]

  l; N9 R0 f4 s* e+ R2 t  ~1 C1 x. }2 S) o/ {! G' [
reset-timer
) K2 F1 p8 z2 H! p: f

3 u2 Q9 I- V  X3 D1 s7 {( J: ?1 C$ a& dpoll-class

% S# {5 I. O9 e0 M
4 g- m+ }9 v0 m, i3 b! u9 _! qsetup-plots
; R. B( a; Q; i& y9 v

. Q: w4 n$ b+ wdo-plots

# R) M. b/ G% |( i8 g5 Xend+ v+ ~  h0 @* J2 K# a
8 Z  }* B4 g. C1 i- m) G+ z
to initialize-settings
5 o; }7 [/ h! y' l! W1 g1 `+ r3 \. x- N! M- f  L$ N" S, r
set global-reputation-list []
) k' a; R  c" G& R6 G
3 o) e) |/ \7 U" w
set credibility-list n-values people [0.5]
+ n- G5 ^% E, ~# ^! b' {
4 o8 R; I7 y) m: }
set honest-service 0
9 V  R- p) q" ^5 Y8 U
- f7 _& i$ L* Y3 J
set unhonest-service 0

2 s6 S" t9 Q$ x* I
- L' Q% ~6 y$ xset oscillation 0
& J+ k1 L, M, S+ O9 z+ r

& I+ t! O+ ]; j( B; ?, Xset rand-dynamic 0

1 [7 U8 w: j' Z/ q, D2 V( ?end: \5 B3 Y6 `& e7 }0 ^

: ]: O) L& R' _& tto setup-turtles ; J- j# P+ E2 t
set shape "person"" M- i+ C8 n. l. [
setxy random-xcor random-ycor1 m, o- @' g4 \+ E" N7 Y
set trade-record-one []. e0 I' U& z1 e. t

$ k$ d; ^: N4 v6 n, I. Y1 kset trade-record-all n-values people [(list (? + 1) 0 0)] 8 r$ d9 v$ m8 |" }

, ?2 _% `( ^" |. q2 r- D# Vset trade-record-current []
% ~3 o$ N/ ~2 W! W& ^set credibility-receive []0 W- X" F& v  W% b$ {
set local-reputation 0.54 I- g+ q2 }& f6 @$ \/ |
set neighbor-total 0
8 V9 [- o6 d5 qset trade-times-total 02 ]" t8 K% T' j. M' l) P
set trade-money-total 0
+ G* W: Q" b# r+ e! dset customer nobody
) Y# z" D! s5 Z) ?: _set credibility-all n-values people [creat-credibility]7 V- z" f) J) |3 A- r) q0 B
set credibility n-values people [-1]: J+ t4 P6 B, c
get-color; l9 D6 P1 @; ^: P
2 o- Z( r! ?5 {1 x& \* K. G7 P
end1 k4 l- {0 C" C) s4 o

; D# W( w( X2 U9 Tto-report creat-credibility
1 u1 U2 v8 q  I# Y; W% G' ^9 treport n-values people [0.5]
5 A; w0 d' J1 ?9 A, yend
! A- n7 R3 w/ K) O0 ?  A. C
' [/ G0 G; }8 M( V' Eto setup-plots
- P8 u5 q, h3 q; q
& F0 q& E/ B0 B. o0 l: z* Z1 ]" zset xmax 30
5 k! Y( x3 T4 l1 I( Z+ y% s
, f" Y& ]% O: I% N2 r6 e1 w" f
set ymax 1.0
9 ~. l% h' w* c* O

6 _- C, G8 s$ W9 Wclear-all-plots

$ {. ~6 v& J; p# T5 [
2 }6 V8 E% I% y3 Vsetup-plot1

% Y  C2 ]: M1 y0 f  y# g
0 T. ~2 D7 y% _& v0 ]setup-plot2

1 K3 L4 O2 W7 y+ H& X9 C& a! a: [
" |6 h8 {, K. i. Hsetup-plot3
! U2 z6 {, v5 L8 Y
end! l' O  l: z+ n3 z  n* O7 Y  j2 A. w
+ `4 v: ?! M/ A8 K- }
;;run time procedures9 C# n8 e/ l' q8 g

' r2 g( Z. p1 O6 rto go
3 e8 i9 e+ O' W: I6 B2 Y) Z! Y; P: C( z! F( j' V+ k2 J
ask turtles [do-business]

, y- e5 P3 P* F* W2 s& Uend
" q6 w' m- |6 v, u( [0 \- L0 s0 ~) \$ d; g2 A  H7 F5 h$ x, M8 h# i
to do-business 4 ^$ c4 B. L0 Q+ H1 d" z: k

* K# L; K; ?0 e( a5 P+ f3 ]0 }3 K; s, }
rt random 360

! M+ |# Y: d, u- x% a: e
% i0 e2 p  j, ~" _$ j% n& i+ xfd 1
/ D! F6 A0 |; z2 e) N* K" _( v2 e

" b5 J; V7 g% A5 Z' s/ xifelse(other turtles-here != nobody)[
. D  |6 A+ S0 f' G

; r; t  F" m* `+ G* ^, {/ Dset customer one-of other turtles-here

' r+ V0 x4 |/ c2 n
% }" J) K4 i1 ]: ?) g;; set [customer] of customer myself
! q8 m: q$ s8 C6 T  s
+ U8 m7 j5 U- P* A$ Z5 @8 `
set [trade-record-one] of self item (([who] of customer) - 1)
6 G9 [- H) ~, C5 g[trade-record-all]of self
# f" b8 z2 ~& ];;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 s4 z0 P$ J- }' W
0 Z% p3 f: L7 O3 k! f1 pset [trade-record-one] of customer item (([who] of self) - 1)
* ~; u; G) f) f/ s' C, z[trade-record-all]of customer
2 E6 d5 O. B8 t) i! Y* q; |
/ d8 t. O/ j; p: w6 A
set [trade-record-one-len] of self length [trade-record-one] of self
1 e( ]& S! j4 i! v0 a* G. }+ k

; h. w9 |+ |: X: u% S6 ?set trade-record-current( list (timer) (random money-upper-limit))

: J& n, l5 t2 J! O3 z8 L) s0 g0 o
ask self [do-trust]7 G$ l$ p  y* N, R6 Z: i
;;
先求ij的信任度
  i" s4 k: i5 L: A( _8 j
) s  H- }. a. R, \+ B8 {if ([trust-ok] of self)
( w/ P$ @. n% f( Y3 o6 `7 l' E;;
根据ij的信任度来决定是否与j进行交易[% ?. b% q. b6 ?6 ?5 y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 N3 B6 _& M6 O( y5 ^+ R0 I2 e' i1 P5 q6 F4 ]5 b: k6 b; d
[
6 U! d! j7 C; n) a$ I

+ K* E1 u' S7 J7 ado-trade
* V* G. A3 z2 X8 K4 F

8 V3 I( W8 p  Y& ~" @" supdate-credibility-ijl
, P. q1 L6 b9 [- V
# H5 c5 I- |) g; r7 v, l; b
update-credibility-list8 Q7 f3 X9 ?$ }7 V. s

. ^( e6 N/ _* k" f/ k. Z4 H  d3 P  N% f7 p  w* W
update-global-reputation-list
6 J. ?$ o- a8 C% w0 S, z

) n  U. x+ A2 d3 |* A9 |poll-class

% O1 O4 X& r% Y1 ]4 E! G# S  J
- }$ r$ V, o. L- _$ o$ h) |get-color
. C' L. v; ?* V5 J

. N& N5 u9 r: ]$ z: n]], y6 l& s8 n" Y6 e! b

3 f+ A! o$ a" H0 L* U;;
如果所得的信任度满足条件,则进行交易) c$ `5 c$ N1 @

: l3 `+ s' w3 B7 t[

+ X$ a5 O  X1 F
7 ?  r1 f% E4 N7 j: m- A7 \rt random 360
% T" g* P9 Q! l. v0 e; r: B

% q6 M; @8 J7 Vfd 1

" t1 r4 T' v- {, H
  o- ~0 o) ?$ l  L) t3 K) {! G]

" a& k1 G$ @+ P9 k. X5 U- y( c+ j' d8 ^; [8 r% n% H+ B. E) a
end

. `# X- k$ ?" }& N
& @* s! x3 A' ^0 P7 Sto do-trust
0 ?+ J5 S5 S7 c  C3 ~4 b2 Oset trust-ok False( X$ q% e2 M* b8 O5 G) I

5 y! A8 p6 c& C, y; k2 l: B
7 D+ Q& t$ A  M3 C
let max-trade-times 0
- A( w5 d% o8 b; S4 @  Oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* d! n" N! C; v# j* Mlet max-trade-money 00 Y, C" b& v2 F0 L* f
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  k! _) ]" R5 |/ ]$ v! t
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 _3 a+ r. {$ e
3 @* W. Y+ t- Q" Z% S4 u
* y4 a" ~$ _* V' W
get-global-proportion! M6 ]9 `* G; B) e0 ]' q: ~9 D
let trust-value
- ^2 W2 k: I% y2 J( y: Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
2 g; u. s4 n- A/ T6 O7 V
if(trust-value > trade-trust-value)
9 `9 K, A* e+ A[set trust-ok true]
$ k- Y6 U% e( F, tend
/ ^# a# w) N, {; E' O. W" i4 |9 O0 K# m% s; S
to get-global-proportion, ~( i9 R+ K- R3 v5 q, ~* _
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 E" _9 [# x2 h" B& z& \
[set global-proportion 0]
" k8 E) `/ A9 `$ z2 q7 n2 L8 S' r. ~9 I[let i 0" I' M! _6 q* x4 E9 o5 J8 X
let sum-money 01 {( B2 H( Q; F- a$ n
while[ i < people]- W3 b1 t2 r# l8 V) H6 w
[  z, c$ y( J0 |% [. W! z
if( length (item i
5 O, X4 \" Q/ v- J( \" B1 k[trade-record-all] of customer) > 3 )
$ {$ U2 O6 F( J. r3 k' |2 W* |
[( ^  I( l5 ^0 M
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 P/ b2 T5 e: u7 x+ ]]
8 w+ ]$ ?* Y/ ~7 X" L& C& m]
1 C7 @  q* W9 \1 @  w. K! q  zlet j 0  b& |) [; U; i( d7 ]* F. H
let note 0) `: m  b& P, K% U$ F9 a, h6 u' R
while[ j < people]. n5 b4 E# ^0 C- D) T! D
[
2 h- U. a8 S/ d8 T7 I1 fif( length (item i5 z9 t) [. @* R/ N! H
[trade-record-all] of customer) > 3 )

# g& Q: s: f6 `: s# l7 ^[
- n/ r5 B3 `" ^( P6 k. Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- M( L) ]0 d+ l. h
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 t' m0 @  K2 r2 w1 I
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 x) _% h: G, |9 R
]
) r& i# T& I: i, I$ t2 d]
1 ]6 b5 i! L7 k8 ]set global-proportion note
! R+ c1 e" S  B* M4 t% t], p: z3 g7 m/ T* U* s( \
end
& j: c0 r/ a9 a+ e& D) ~6 ^$ W9 p6 G* Q- a7 O( m- }0 x
to do-trade
; U7 C4 e. d$ b7 c8 F# R;;
这个过程实际上是给双方作出评价的过程6 ?+ H9 F2 X7 l0 n! ^3 _  B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 m% Y2 p! @" D+ z0 [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! i& r/ g+ j* w  S
set trade-record-current lput(timer) trade-record-current+ g9 T" J& x7 v& S
;;
评价时间
, L6 Q5 w4 N# A: `ask myself [) C$ [" ^5 \# q3 `) {8 p( V, @8 U
update-local-reputation9 `9 q7 E/ ?$ n1 J# y. T8 c7 Y
set trade-record-current lput([local-reputation] of myself) trade-record-current4 {3 V+ i0 ~$ V/ _8 z7 J8 Y4 n% j
]& S1 a2 ]1 {0 F) S+ `7 ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 o/ T9 y  e  i; G6 T! o; J9 j+ b& _) n
;;
将此次交易的记录加入到trade-record-one4 Q- a) o7 I' V  B8 t4 z6 o
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 n; F" n, a3 qlet note (item 2 trade-record-current )
* ~5 w. G* c- w$ t8 @6 d3 Z* a! Wset trade-record-current
! [6 m& y; y6 x; o% E(replace-item 2 trade-record-current (item 3 trade-record-current))
( j% a& J* _+ o; R% T- V: G% ]) s4 X
set trade-record-current
/ S: @  V* X9 W5 ?& c, r, V(replace-item 3 trade-record-current note)1 A, K9 ^7 Q6 [; b) X( e
9 C, _4 D. {$ N: B
. `7 t/ F6 d7 Q( h; J  F
ask customer [
. `6 ?. Y  x. y6 v* O/ oupdate-local-reputation/ z  _5 ?/ z5 O, y0 h) g
set trade-record-current. ~# i  b* Z- J. U
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 j$ f& V, q' @1 _9 _]
* U7 R. D: ~/ _5 o
/ ]* f0 @: i+ T& A6 R4 Z

8 Y/ C9 m' F: c6 M* F1 N7 Y9 ]set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& r* w  G& x3 g% M9 g0 G8 F: I. K& N( b
& O1 T+ u5 ^% _8 Z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 ]5 y) m* h9 U% z; B" l! x, g+ r5 b
;;
将此次交易的记录加入到customertrade-record-all8 c+ K, p5 C/ v+ F( w- t
end; @  j+ R! a' b
. ?6 E: R7 ?) q
to update-local-reputation
6 G# u; T3 [5 u) Rset [trade-record-one-len] of myself length [trade-record-one] of myself9 U2 o  f% [  d% R- i& ]
% c1 p6 c/ g0 a
6 o  }- e0 E/ j
;;if [trade-record-one-len] of myself > 3
3 P! T  S8 R8 w# k% O# ^
update-neighbor-total
5 \( \. D& \0 H2 X1 y; i;;
更新邻居节点的数目,在此进行
$ ]1 U0 @3 Z" j8 p$ ?let i 3
# i; r3 ^& L) m1 w6 B# D7 ~3 slet sum-time 0  Q, M- R# {1 `8 z- L
while[i < [trade-record-one-len] of myself]& ?1 z' N$ h; G7 I0 {. {5 c; p
[4 e" y* z0 s" q4 O
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* {: q  |/ x4 B- u4 K
set i
' q. c+ `- \) W% b6 l- K( i + 1)

0 o5 L. J7 V7 A0 w! n4 T% f]
: x6 g! p$ g- t' n3 dlet j 3
; O+ z- H2 }5 G6 hlet sum-money 00 e% y% p' u6 k! m/ y% |# H
while[j < [trade-record-one-len] of myself]
* w( |3 N8 u+ Q[- K+ a. E9 |; z) K. j
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
0 U- Z; f9 [) yset j
0 |: Q" O9 k8 R: C$ ~( j + 1)
1 E7 v7 `- i4 A8 s/ W
]" D, B" g6 }  \
let k 3
/ Z5 E! B) u7 c" K6 p, ]let power 0  N0 Y, F  g, p8 l% I
let local 01 h% s. b# W' C, i2 f
while [k <[trade-record-one-len] of myself]
1 n" H5 _& |. G) Q% I" Y/ a9 Q[* a: ^7 L  z. {
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
  W1 M2 s- b5 [1 T& F2 Nset k (k + 1)
/ F& k/ q+ c4 c8 T$ T]
2 b/ ~0 U& v" E/ P, f" lset [local-reputation] of myself (local)
  K; b3 D/ Q" Q( L- p6 |end
: @4 T( a( i+ V2 s; d; W8 X
& ^) c0 \5 f( E, v" Lto update-neighbor-total* K  r4 }( f0 Z- V& b/ k
0 a$ j2 }- w; C) x8 p* X; x  D
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 z6 {+ k5 E4 P+ P8 \
* f4 f+ O( W0 p; y2 R  x
8 x5 V" Y6 r+ g% Y# j7 ]
end' a% c, I5 r! a& H' u

! ]' D1 W8 \: X0 ]to update-credibility-ijl
7 ~1 F0 _" z) }  A: Q' s8 S" r3 @
# e. ^" r+ S% R6 W4 K/ ~1 [;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
% K; _" r; P# Q9 blet l 0: m5 ]% g% L- [1 N$ ^1 H7 [- y% d
while[ l < people ]# A1 _; \: Z7 _4 y7 M7 N- Y
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
- X- @" ?+ o* ?6 k+ }[
9 t9 U0 `- j  X4 b" C( qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" ]9 n, ?2 n' ~+ m9 P$ L( Rif (trade-record-one-j-l-len > 3)9 t! W6 g8 D& T2 W; Y. t/ J/ p
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
; P" ]4 E* o/ p0 U2 T: Elet i 3- R& g% c' j0 t) G" x5 a
let sum-time 0
( S/ ^! ~! ]9 z' I: w0 C3 kwhile[i < trade-record-one-len]
! Z0 X# k# t' ]( d+ q5 \[5 l5 K; F% ~( q- {
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' y6 H2 a: V% H# x6 ?+ P) fset i
+ ?& l7 O1 W# _# |- f# D( i + 1)

# L: J" A+ A, I% ~* T1 y]3 R, e4 O4 ^- ^! p4 ^
let credibility-i-j-l 08 [# O2 i: v& B9 P0 r- L6 L% A8 j
;;i
评价(jjl的评价)
4 {  T& C4 i7 }0 vlet j 3+ B; H( S* v8 \" }; _, {5 u
let k 4
& ?. K( x, ~! gwhile[j < trade-record-one-len]
$ F; S3 S( V/ [7 |[. W: s4 }" Y# M# H: V) ]
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉$ N2 u: J  n' b8 N2 n
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
# x0 Y- E6 A" n( U/ Q, Wset j5 B1 N* w+ A* D- g3 W  I% M: j( _
( j + 1)
$ H/ z/ ]) w( |8 |0 R- i
]5 f! \$ o. m( [, F
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l )): y8 f) }8 v7 H" j8 S0 u" d( `0 e* u
/ {: b$ `; S0 Q" K

! X4 ^9 R* O- C' I, Olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 H! y, @* v% I9 T6 k
;;
及时更新il的评价质量的评价( {; b0 A" _! O9 t4 c
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% q1 k* M6 N' |4 P0 e: P
set l (l + 1)
5 R; d4 B- w) b6 Q. ^  F]2 T- G( H4 {5 [! p% h- d
end
. c: V, F& v+ f  k6 F+ Y( c/ ^9 Y; P* u- f% c  k6 z
to update-credibility-list
. X+ e% y5 y0 f, g3 P# [let i 0
4 d5 U: o1 b1 `1 L- Jwhile[i < people]- i- h' s+ Q# }: v
[6 T( J0 D% l" c* c. ?7 H, i
let j 0
4 @0 K7 v$ A1 z7 ^let note 09 k. ^7 N" i7 d% ]! n! l
let k 0
' M8 t( u; M0 A. I;;
计作出过评价的邻居节点的数目  e: n: M* P6 {1 ]# m' s
while[j < people]% ]: _+ B/ ?# P6 V& p
[
4 w) \* t2 {1 Z$ e4 mif (item j( [credibility] of turtle (i + 1)) != -1)
- |- Z6 e4 b# h1 N* d# A) u;;
判断是否给本turtle的评价质量做出过评价的节点+ }/ B1 P* i: R9 B' n% c; t
[set note (note + item j ([credibility]of turtle (i + 1)))
- n* N! o+ ?5 E;;*(exp (-(people - 2)))/(people - 2))]
4 W" C+ ?4 G% j# u" h2 X% h7 o: K
set k (k + 1)8 _, k( r7 @2 n
]' Y, q+ T( p( `% Z+ b5 f) ?
set j (j + 1)
$ ?. O$ z  R1 U6 R% w+ {( S]2 r$ s$ z' t/ Y  _2 I' h' W
set note (note *(exp (- (1 / k)))/ k)
( b. }, m1 B+ H" D' Iset credibility-list (replace-item i credibility-list note)
" O6 q9 M* S# ]: O; [* `4 |set i (i + 1)
( Z7 g3 ?1 Z; Z]+ y" R% N, }& n; j( s7 i$ N
end
, J- D  m5 X' D5 J% @& u, r% ~" f2 ~+ W; X) f
to update-global-reputation-list
* ]! ~. s3 T- Q& S' dlet j 0. ?3 F& v) K! H2 Y4 D/ h
while[j < people]- u! k4 q- V* k; a, K
[0 `* f! \, N; y% [$ X) A5 F
let new 0
" J6 l  [" h+ c# \6 w8 A;;
暂存新的一个全局声誉% P, Y4 I* t3 Z! K4 U
let i 0/ M' S$ A$ D: S# k/ x
let sum-money 00 [9 I1 |" Y% {/ [6 J" U
let credibility-money 03 d. V5 U6 x0 Y
while [i < people]
7 _# ]1 g$ g' B6 p- E3 p" w& H2 x[
! C0 a. L% J6 [: Sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). H. G9 g* `" Q" T) h% H
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' Y" n3 O8 L" \; j9 R+ e+ n
set i (i + 1)5 U* g) f2 k4 l% {, O9 g% {5 w
]
& q. k/ L. Y8 Glet k 0# F: C/ K& q( m' Z0 H3 i
let new1 0
/ b8 T  @: D, T& Hwhile [k < people]2 A4 O. r$ {  p* s+ x
[
$ G0 m6 o3 y  J* o! zset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)5 j4 j" Z+ A. R5 e; a3 E1 ?9 s
set k (k + 1): I9 V9 Z: X$ k6 }! O: [7 }
]8 ?$ U. N/ \/ J, W* O" Q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; U6 x: e) f, l) q* {7 |/ fset global-reputation-list (replace-item j global-reputation-list new)
, _5 f& r+ M3 u1 eset j (j + 1)
1 }* q: t6 y& b/ _3 C]
7 S" Z. y+ @* }" C; v# Z: zend, J1 R$ T$ f* L! b2 T

! ?7 e+ K& h# |1 z" g! ]. u! @2 P

4 @5 t) ^7 \& X2 |* t' sto get-color% e! z$ }9 b2 p0 y: V

$ Z. ^3 L" b! |* a+ w8 Hset color blue
. M7 u, [- Q( O, C  M
end
! l) T/ o& n  D5 E* W
, R' B, L5 [. u3 }9 s" t8 a. ~to poll-class4 T. j" i1 J! G) o+ u! r' q9 o
end0 |% u0 h* W( B6 k: I& l1 F- |) v4 D

" e/ V7 m4 E! X4 R0 @; qto setup-plot1, }( Q2 I# n5 Q% h

4 K2 j; n; U* l0 r: q; @set-current-plot "Trends-of-Local-reputation"
. s: C& M# d0 m: Y- |

4 U9 h5 _6 D; {1 }4 M0 B! A$ }7 M- Z. tset-plot-x-range 0 xmax
- a* z  K( ~" o& T
# M+ Z  ^* D% w+ i2 t
set-plot-y-range 0.0 ymax
2 o5 V! N3 u( y1 s. O9 I
end
# O2 L. D+ m- X4 \* h6 M, s, Y* s* n1 D( j! c( ~+ s' \
to setup-plot2. b6 {( s$ M3 j  C

: M" S. u2 L1 i7 r: E$ `: c. {set-current-plot "Trends-of-global-reputation"
3 G- s' ~6 |: G; N4 D9 ?: U

/ {# L3 ~+ M" G' Pset-plot-x-range 0 xmax

4 @: L0 D% c, d3 V6 r# |. v9 j+ q6 d4 D7 G
set-plot-y-range 0.0 ymax

6 U. C6 @+ [8 F( e5 Z* p3 qend  E5 F$ ]* C( Q3 [5 L% E
3 K2 {" i1 ]. ]  B5 ~* v" W5 l0 v2 Q
to setup-plot3* R! \/ R% l: @3 `% [$ Q
0 l/ v0 W: b* f, ?; F
set-current-plot "Trends-of-credibility"

: z- v2 q! s7 Y) ]' a" \
4 D$ [0 N- F1 K0 r0 a# W- _( Fset-plot-x-range 0 xmax
6 v2 ^% h& B4 [2 l: O% w
, Z# f( W: M# W& e
set-plot-y-range 0.0 ymax
2 _' K# V: Q* [3 B1 E
end
( {5 w& I% ?& `1 a, M8 z2 U/ @5 x2 _; K' D
to do-plots
) Z; W* [0 _( `4 Dset-current-plot "Trends-of-Local-reputation"
5 W- f4 J2 ]$ S; M$ T. ^) X& Fset-current-plot-pen "Honest service"
9 p: W* r( e9 S5 |2 P! u, t/ T# wend$ S+ R5 p1 }+ }

/ W# `; p7 R. {0 |! B! f[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
2 q1 T7 \* M* P; a" T. ~1 K/ c! y& a. y! d8 i# U+ b! A! f
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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