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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:
9 \- r* r9 C4 B% B: Y6 }5 sto do-business
# F8 k) H( y2 O1 i" f# b* j rt random 360: A: K7 }6 v% s: e" G/ d+ a
fd 12 p6 U3 U+ L/ p
ifelse(other turtles-here != nobody)[
) U, s6 M8 F& I) H+ Y/ E/ Q- A   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.
: ^9 n) E  C1 z% o   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; {8 `4 \0 j3 S, v   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, q* M% B1 ^2 L) A/ B- g2 U  ^
   set [trade-record-one-len] of self length [trade-record-one] of self, I% ~( y# b1 e
   set trade-record-current( list (timer) (random money-upper-limit))  s8 }4 n0 A, q$ F

5 b7 x0 X  i. J问题的提示如下:6 }5 S8 l( K* y8 W

: y8 }) ^3 W6 @1 H8 R  G; `/ @error while turtle 50 running OF in procedure DO-BUSINESS. t9 ~9 v- V( {. E/ U6 K
  called by procedure GO
' U% o! A1 ?" u& }3 A1 j+ a9 r2 t' rOF expected input to be a turtle agentset or turtle but got NOBODY instead.7 r5 k& ^$ H8 t" ]# e
(halted running of go)& R6 @, p4 Z& E4 D" {: F
3 u  b4 j' D# S( o, u
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~~
7 L6 I' R  _9 d, G/ J, E+ n5 j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# S  \+ s9 T) `. Y8 ]+ s9 l) t
globals[- \2 D$ r* H' G5 x; Y4 g
xmax
7 g$ s# L& V' M2 `& uymax
' \, v1 b0 u% C1 [  d5 ~# n/ Eglobal-reputation-list: `3 V8 ]+ p) A/ L" e

# e3 N: O; S* l7 e/ R1 ?. B;;
每一个turtle的全局声誉都存在此LIST$ J0 r% Z7 q" A; o) \
credibility-list" \; F+ G% ~# \- Y7 M
;;
每一个turtle的评价可信度0 Y7 \2 n. ], M; `; {
honest-service2 j6 o1 w# B5 m, P; G
unhonest-service
% J: H6 I0 l% H2 c4 B. ^: j) O1 uoscillation
" y3 D- ^# O3 i+ y5 h8 drand-dynamic
. n  n; }0 |" X: b]0 \0 S3 X$ [, B7 v4 g/ `% u8 T9 c
2 E- F( c0 x! d8 S) {
turtles-own[
+ n9 N! x' m% z. O" [$ Qtrade-record-all
& ], H6 R0 @. P2 ?% s;;a list of lists,
trade-record-one组成
' J6 ?1 t6 {& T& V6 c' atrade-record-one& V$ O6 z1 M' a, J
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 }, M2 t* G0 Y2 F: E! [& n) C/ l
; k- h5 }, w1 \5 t6 r. B7 W' ]1 Q# m; A% R
;;[
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]]) a) l! T/ O+ w/ Y5 A3 ^7 r
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]4 V1 q- U3 t8 p6 Q
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
# b: v  J+ M8 y/ Tneighbor-total' g. x3 ?0 S6 s$ I
;;
记录该turtle的邻居节点的数目
* y# u  O6 Y% G2 I5 N' _# ?) ?! Ftrade-time8 _+ d3 ]2 A0 X
;;
当前发生交易的turtle的交易时间! V% o# S+ Y2 Q* p- c
appraise-give$ ~* \4 s: e. R, e5 k
;;
当前发生交易时给出的评价+ Q- ^! W- v4 k2 i# R3 `) M
appraise-receive4 x4 p" P: q( Q9 s
;;
当前发生交易时收到的评价4 e2 J: ?6 O! J7 \- c* Y
appraise-time7 O4 {: ?  g7 m! F  t0 f! d: ?
;;
当前发生交易时的评价时间" ~: G: S: i/ o6 f2 V8 F
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
' q' S$ u' L0 D* [- e  ^' Itrade-times-total0 Q  Y* A2 W  c; t$ Q) n- a
;;
与当前turtle的交易总次数
( Z% N5 e1 M; ~& L7 ^$ s- C# Ptrade-money-total& L, i7 [5 l, Q
;;
与当前turtle的交易总金额
" a) H" y7 \# }3 I# Llocal-reputation
3 u& ]3 a& s( W4 M2 Z* ?0 `8 dglobal-reputation
/ G+ ]# H$ Y$ r( Q3 vcredibility
% Z/ h2 L9 y* @6 m( Y/ ^# r, I;;
评价可信度,每次交易后都需要更新
& q  ?$ o  Z2 z; }8 d2 Y* E4 bcredibility-all
! \) X* j/ K- E; V) V$ l;;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! c  A) c0 @5 y7 Y  x
: O" l% x% r8 y5 `# s* H
;;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. R" [2 X" y3 F, E
credibility-one; c, v$ w& D1 i$ s- _, `0 |
;;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. N: W6 o. L0 L2 G  ^2 g
global-proportion9 W" {4 a5 q& U( O
customer
; V& |3 {# Z$ S4 ^0 Z4 s% Xcustomer-no0 f/ T6 A. c! `8 G- R' y5 |/ x
trust-ok
' z) \8 p5 j4 z% Xtrade-record-one-len;;trade-record-one的长度
, G' @) K$ _  G3 F6 z: y% |]
% J; I) @/ @- j0 e0 D
. C/ ~) @8 O7 M2 n5 G& |;;setup procedure0 B9 U3 p0 ~: L0 P

) p0 O2 X: A. K8 t% uto setup5 ^( [5 _& ~. K) ~# h' J

# U  X; {) J9 ~( U0 ^+ e9 \, q- mca

$ l6 ?0 C1 Q& `' S& b5 T( M4 I' N8 v, B' f4 @+ b
initialize-settings
- f7 X, z( j1 h3 r3 f

8 X/ A( d$ x: }crt people [setup-turtles]
" T' F9 r* z) }8 i) N
- [9 z" Q4 f/ [
reset-timer

* F1 h+ g7 V8 D0 r) Z& A. w. X
! u" b3 {# B) b1 cpoll-class

( e% t/ S6 `! o  l3 D6 ?2 d4 p+ Z4 ^* s
8 y7 A& R, A* {) n$ esetup-plots
6 x( h9 A# s# A

7 C8 q0 r% q0 D0 Vdo-plots
! @- }! d$ y2 b& ]1 @2 U6 W
end
& U3 f3 \. Q. [9 P, T) X" }* L: x+ @
to initialize-settings
% Y7 C* L- _6 f& t
6 Z3 w9 V: I6 V  O; L& u0 O7 ]) e' `4 S' c/ Jset global-reputation-list []
2 C! R, f7 e' I* l8 d: j9 n

0 |0 ?# U0 V- sset credibility-list n-values people [0.5]

; S: Z2 S) n. V% Q3 R$ x
0 D: O' H& w2 W1 p' Nset honest-service 0
0 `. H- A9 R% s3 @9 X; P

7 L: D( l# Q# `set unhonest-service 0

. C8 ?8 v4 @% U" P" d2 x" j4 S# T  g& r: k! A3 t, K
set oscillation 0
; S6 M6 \* m5 P/ h  k* @4 T
0 f. A5 U  H! T4 D7 s
set rand-dynamic 0

5 H/ t5 E* l# N+ {7 {- t: ^# Pend
) A% H& r& W, o2 z4 m) w. h8 s
$ N( m' U  z: ~9 Z) Xto setup-turtles
+ Y+ }) i1 x% vset shape "person"
/ S1 N% y) a, B- {* gsetxy random-xcor random-ycor
- ?  q3 ~; |: M2 Kset trade-record-one []
4 _$ g% n# J8 t6 h, ~. a

% V* ]6 w( ~$ C6 j; j  Xset trade-record-all n-values people [(list (? + 1) 0 0)] $ e/ s2 X3 I' O
9 D' m/ Y$ z- U: a; o: e7 B
set trade-record-current []
* g/ p" ?  `8 u- t  hset credibility-receive []8 y9 v( f4 ?. E5 \& U* {% E
set local-reputation 0.5
0 _/ e+ [' H& ~$ h% _0 qset neighbor-total 0/ ^  k8 p8 u2 Q
set trade-times-total 04 N" y/ w! W! P$ J7 @
set trade-money-total 0: F1 `1 q% G6 U' B0 M$ b. m
set customer nobody5 J: x1 m6 D8 l+ P" b" e
set credibility-all n-values people [creat-credibility]# R+ @) T0 m6 p: ~6 \
set credibility n-values people [-1]( d8 k1 c" G; J+ q
get-color
% O# E# x2 h2 o9 R" [
6 P! B" c- ?3 s5 k5 R
end
, u  ^: U4 |' k3 d; x. v# R8 ]: C6 a( y/ U: g  P* ~9 ~0 d
to-report creat-credibility
5 B) ~- o' a( k/ h! r4 areport n-values people [0.5]+ [" P1 B7 A# @. }" o
end
0 V5 Y! J( t9 |& \8 r5 t/ c; g8 n" S1 G8 D# P% B
to setup-plots6 ]+ I9 N; \7 U6 Z1 R8 z; D( u
, E) D* B/ ]  u
set xmax 30
8 R: k! p. l# D7 O) ?# n7 ~# }* R

1 T, |' X* g1 C; Yset ymax 1.0
8 _6 r' a0 W( ?. h( S
* T: y. H% {/ m, d
clear-all-plots
7 U6 W4 b2 [( s- |  v1 W5 U
/ L# d4 L1 z  o8 P* C4 a" o* m2 g- @/ r
setup-plot1
$ _" T/ u% e( J/ k! P, }
9 l; C$ |% U9 G7 p
setup-plot2
5 h. l* }& l" v. z7 K% c7 A& V2 Q
9 T- B1 B9 |  j$ L8 l. F! ~* x
setup-plot3
# G$ n3 `2 v/ R4 _; v' _* w
end- g. f* @' B$ d- x: s

' n6 s1 L  i, ]/ l( j;;run time procedures
3 K7 n9 N$ l. F) W& v
- p. O, o$ k% oto go
1 s9 J2 J8 c  K3 G2 B6 d7 b
. |6 E" B. z1 K4 b: t. Task turtles [do-business]
0 ~6 W2 W" e; @4 x- X9 Q  H% g
end" F/ N# `) W. ]  \

. o( J! D) L8 ^) bto do-business
8 j& o! g) l; R& X- Q
! ~4 S4 q" Z' ^% K  H
5 \/ Q/ x* H* u" B1 j" I
rt random 360

5 M5 I7 D+ G3 r  d* b; n& s, J6 ~/ V+ [, i
fd 1

& _) q3 F( m. ]7 J1 ~- N9 b
7 Y3 b6 N" v% M$ Z2 O9 sifelse(other turtles-here != nobody)[
  {( B0 @5 C- _) V& \  m, x, x) b& i

1 K5 |* s- P* v: }; Z+ b6 ?set customer one-of other turtles-here
0 t6 B1 }- }( Y7 D) Z& F
  @& C) r3 E/ j. g' R
;; set [customer] of customer myself
8 G, J* L0 j5 x! i
0 I, B0 p: S/ P  U. ]7 m+ Q6 ~
set [trade-record-one] of self item (([who] of customer) - 1)
5 F* x. S4 H* l, g/ I/ m, k/ [$ p[trade-record-all]of self) k' C' n/ N: D& @' x
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* V, H- v2 a* e% d# C

0 {4 t2 r+ z% n( u! b- Y2 r5 tset [trade-record-one] of customer item (([who] of self) - 1)* C6 L+ V+ T7 `% x
[trade-record-all]of customer
- q# h/ F' k5 S

6 _& a( y  [8 T8 f: Iset [trade-record-one-len] of self length [trade-record-one] of self

5 _  w% z1 M. D9 l1 H. r: g8 v: C  D4 d4 p9 V  T
set trade-record-current( list (timer) (random money-upper-limit))

7 j; \; X, c% z" p% Y1 Q8 P3 ]; i9 {- p/ o6 E
ask self [do-trust]
/ ?) s" N: t* ~/ i! z2 D;;
先求ij的信任度
0 S0 V! ^0 t9 t6 o& R) o
+ A2 F$ a+ K& j% tif ([trust-ok] of self)
9 @; X: B% |  I; i+ I  F" I;;
根据ij的信任度来决定是否与j进行交易[3 _4 O9 ?/ m9 }. g& ~( e% G- r
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* O* k- r1 p' W( F4 D' G9 E" r! x. {
[
' ]; {/ j& s3 I6 p+ {
8 w  c$ d- r6 ^; d* t* `4 I; c
do-trade
4 O9 o3 _- H$ X( B; h
0 w  C- O8 n* B2 ?0 a
update-credibility-ijl
( `% z1 c% S. x' b1 L# \# N4 }5 M
) g0 y9 A" [% I
update-credibility-list
- R9 F. c7 O; k/ D& H7 C/ \

9 Y' q0 ^% }9 ^$ x. l# K: o6 H' ?3 V$ _- B% Q; F$ Z$ K8 T4 `
update-global-reputation-list
# V  F4 @( F& ~6 M2 m* X

4 {7 ?( Z. h. Rpoll-class
0 h" Y/ u0 ?4 r

! k* ~' _4 I# \get-color

. ?! m$ M& _' i. `' }+ n9 v( o- F- e/ j- w. [/ V$ r4 N: D9 e
]]
5 _; ^& {4 ^& V- Q2 w; J( d8 }3 N2 J# k, j
;;
如果所得的信任度满足条件,则进行交易
, ~7 g0 [: d( A0 v: ?" ~& ?$ ]/ P! Q$ `# ^/ V
[
9 A4 [' w; v9 ?- ?
5 R  p2 f; D" }
rt random 360
' ~: H2 j2 k8 Z7 ]  L4 u$ ]. d  }  ~
5 E' f. S$ o' ~% y( Y3 m7 c
fd 1

* u4 e. |. I6 I7 C6 g
! _% [8 R: ?% K3 u0 a* B1 P0 Q]
! {, j" U# T6 V) }$ K

  M: H1 O8 }+ x4 H( w0 Iend

0 y8 G+ `2 K' [1 h* H. \
# |* }+ ^+ e) o. ?/ [to do-trust
& n/ u! K8 h- O4 X8 nset trust-ok False
+ s' Q9 @! B2 t6 E' x1 X8 ]1 p# }! g1 R/ T4 ~& z- ]1 i
! ~' s2 f0 G. ^4 q& |# Q, C
let max-trade-times 0$ M9 n- S) A% G% L9 v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- C* [2 j. l# i5 l- ]* _let max-trade-money 0
8 m- h2 I4 K1 W8 d5 Z& F% r, yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 v4 b6 e% d4 R6 ]+ j- W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  |; [! m9 u' Q3 K' H, {/ U
( {/ V: z7 z4 q6 C
' B( K$ K% _; B7 V
get-global-proportion- q  a8 v+ l1 W/ f6 L
let trust-value
5 u4 ]9 V" S2 ]" m0 e5 w6 G) W' [local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

9 a! R, o9 B0 W) {8 b) tif(trust-value > trade-trust-value)) q+ M9 B7 f* F, O) r8 J
[set trust-ok true]
' w* x4 s7 s% H5 fend
- j" g: R6 u% ?
4 m( p" b0 U: p7 _3 ^' p/ qto get-global-proportion
) }! o9 n* N. ]+ ?3 y% yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 K4 D( @9 x/ j+ N7 j9 J[set global-proportion 0]
* i( E. i" F. u" G6 o8 G7 g4 E6 P[let i 0; ^* ?& u" E. {2 u! b1 o
let sum-money 00 [2 |1 V' c  M4 h0 c+ I" O
while[ i < people]* g- S2 T2 Y  L" T) t9 ^' J/ C
[
7 v" N+ ?" I0 M9 `if( length (item i) o+ Z7 R  n# m4 O0 H+ m9 M  H7 {
[trade-record-all] of customer) > 3 )
6 F- I7 W( }2 _% d* d4 k. q
[
2 R1 f2 V/ k! F) Lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ y+ E6 O* Z+ T, X6 x4 x  D" a
]) `6 S. A; t  B$ b, k
]
  o, y1 i) _4 s8 q7 N" p/ ~let j 0* @, d9 `4 n1 O2 B8 {
let note 0
# j# U7 p, L$ U) w$ A0 Zwhile[ j < people]
9 @/ @; `$ w" ~( m[$ g* r5 i- g. H- w" M( K6 r
if( length (item i
3 l' b' Z& j3 P[trade-record-all] of customer) > 3 )

2 I4 Z, x9 j0 A# g% {4 A[
# O: E$ D! W7 |/ Vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 Q" Q1 l2 Q: W' g5 m  M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 S, T; @, b" P( \  M[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# Y# R1 E6 r  [
]! ^; w, t/ _/ \: e
]
$ o$ ?9 V5 i* i* Vset global-proportion note
. }8 A$ M/ ]/ d: E/ o) t! W+ P]8 o: Q" E. g, j/ K% ?2 ~
end% L: J  I; b4 j' ~6 ]
( j, @3 U3 k% i! J1 u7 p/ x( W6 e
to do-trade) }. H  ]7 x8 _& @; ]4 o
;;
这个过程实际上是给双方作出评价的过程
0 F1 h7 V+ h! \" o0 eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. A' J8 Y# ]+ f: @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ v3 r* b, a& Sset trade-record-current lput(timer) trade-record-current
+ s2 M4 Q5 p* U& g, |;;
评价时间
4 W* M& ^; h4 F/ ^6 b$ l! O4 ^3 zask myself [  L/ x0 j7 n! B2 W
update-local-reputation5 C. B7 n: n' @9 ?0 e
set trade-record-current lput([local-reputation] of myself) trade-record-current
  U9 ?2 t: ~+ b7 G1 L6 V]- D) T: E3 [2 b+ v  c6 ]
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ }" S) ^! I$ f7 Z. _; V" ]5 Y
;;
将此次交易的记录加入到trade-record-one
6 F" p+ I; X, Z# u/ ]set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 f% S% S6 V; ^8 u- {
let note (item 2 trade-record-current )- s7 t0 _% I# `- P! D
set trade-record-current
# X; H) |! v! T6 i! m$ G(replace-item 2 trade-record-current (item 3 trade-record-current))
8 w  B2 X1 S! w) c
set trade-record-current
, b2 S9 e* Z# [4 w(replace-item 3 trade-record-current note)
% I4 T( [3 \/ e: E( u0 L+ @3 {& k& V3 J2 K0 p% T3 i, X

2 Q' f) H1 {8 J9 c9 t: hask customer [& L1 p% D, n; o) Z* ^# T& @! W
update-local-reputation
6 M+ D4 e& D" S7 ?' mset trade-record-current
9 g. B( _5 u) k3 F( X(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! |3 a7 W; A' @]/ I8 J/ w( {9 a2 @( I

. B9 K0 t  H% O9 a) }& C9 `
0 d" A% y7 j# g! K* V/ @
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 m9 J, `7 Y0 ~" d: ]7 r
, d  E! M8 [; a& |3 x
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( W: i/ ^7 f- e7 \! q
;;
将此次交易的记录加入到customertrade-record-all
6 w3 {0 H* o9 yend+ H  i2 e. T7 c: @! m7 X
) X; e2 F, f% A3 h2 x" t. A
to update-local-reputation
+ j: @9 f% l! I$ H% W7 hset [trade-record-one-len] of myself length [trade-record-one] of myself' q3 n+ p4 J5 ~
9 v- L+ U( Z1 @1 g5 l  ~) S4 S; }

' L' q; R" O) n6 G;;if [trade-record-one-len] of myself > 3

4 N' i) g9 m& }$ _update-neighbor-total
9 X" k: L* R0 \. t, l  Z$ V;;
更新邻居节点的数目,在此进行
! c6 ]  p- G7 H3 M( \" vlet i 3( X+ G- {8 E6 J1 n; ~
let sum-time 0
/ ^# |0 ]6 k  B/ r3 R: T9 W9 gwhile[i < [trade-record-one-len] of myself]
1 `/ C) O3 e) ?, Y[
; N2 n: d! L$ \, g- t3 Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 b: D+ P% r- [# d' d( r, U
set i
% B& L" _4 v9 v4 c9 N* n( i + 1)
% r1 z1 E1 p! J, W+ d4 q) y
]
5 j7 u* F% Y! f: N4 d" t  A9 ^: blet j 36 i; h* d8 W6 t
let sum-money 0! l+ n7 ^7 h; V! b4 J  B# m: D$ a6 j
while[j < [trade-record-one-len] of myself]
+ [# \2 I' `2 E[
- X; C: d) q( a+ d, X2 H! j* Aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)6 R  Q) P4 n4 U# |7 N; o) g3 n
set j
9 ~" B- A+ p  M9 s3 j/ y0 R( j + 1)
# B  q+ e5 L; c! X. d5 e4 o
]/ g5 _2 o5 M8 a9 [
let k 3' N. g2 c2 G, ?, K$ U7 v3 X
let power 0
# Z+ R1 T( m( i, B$ x- |( Y8 tlet local 0
# Z4 ~7 U6 U' U/ E$ `while [k <[trade-record-one-len] of myself]: q, w8 e* e4 b
[
  d5 W( [% h+ q5 u. Yset 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)
" b& l) `8 `% cset k (k + 1)
4 O6 v* m  o& I]$ k- V$ X& T! c" |9 h' V* _
set [local-reputation] of myself (local)$ v" u" \5 z1 l- h4 {/ B& o$ b9 N) K
end
% d8 F) A+ H$ X0 E, U, T2 \
3 y, O) c# s7 o. Mto update-neighbor-total) a; |8 Q% X4 A1 V1 U9 m
, o5 |8 e8 B0 N$ @3 S: s* s
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
8 p) X- w! P9 l, f( L* C$ |6 C6 h* V0 x

  A& x/ J1 k7 g' ~end
- w: a0 P9 t, N3 C
0 T" v6 \9 ~* b& u; Uto update-credibility-ijl
4 K! B; n0 `; w+ z2 }  U4 V+ t/ s0 G0 S9 r$ q3 O8 x
;;
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。
7 o$ T* j- x! ?, V" Xlet l 0
# H' y$ W! f9 L' d! zwhile[ l < people ]8 X  B- F, w  Q6 @  i# q0 W
;;
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
+ }2 H. d8 H  ]  y[4 {: g! n3 e  D/ H' d: H8 r
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 J: ~$ u, j2 [1 F/ `: s
if (trade-record-one-j-l-len > 3)
& Q4 x+ G* L4 f+ b# u[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' \+ C+ T/ W' Z) F& }: m
let i 3: S$ S6 F' \. W: ]3 e
let sum-time 0  J9 [0 Q# e  y3 V* M' u
while[i < trade-record-one-len]$ H' v, ]$ ~) ?/ ]" F% n
[
- ^; q# D  G0 t9 vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); l$ Z- m% R/ F/ }3 \5 h
set i
0 l( S3 N, q" T' G* x6 @: c( T( i + 1)

3 f: p9 j) y, z% |]
/ U7 G" ?* Q( r# H" q' j! Mlet credibility-i-j-l 0
; p" D, c. \$ ~8 W+ u# [: x;;i
评价(jjl的评价)( b  S7 P- O5 s8 D7 _8 D. u
let j 3; S, s7 o' `+ L3 L/ Z  U5 O
let k 4
. q1 i7 [; M! ^1 t# R6 X0 d/ pwhile[j < trade-record-one-len]# N: t' q) {' Q. k* ^2 p% p
[
. L  U2 h; ?" s& b3 c/ h' m" dwhile [((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
5 k7 w# J1 }8 H1 Yset 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)
  {, ]# a. h: O9 Yset j
2 j! C/ k- j8 s" n  q( o- u, ^( j + 1)
; ^9 R7 n# X# S) b, u, p! [& k% B
]
) e7 `4 `0 U  f7 L+ I+ o% Zset [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 ))8 f: e  d$ W. l' x

, n7 f7 J+ s9 d) i- o6 V
3 }6 X) p( U, m: Z* \) d( F
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); e7 {& w" n& b4 X* ^7 R
;;
及时更新il的评价质量的评价0 Y/ W, r1 L1 W, x2 N
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  A+ m  j1 U& Z# T5 J2 z' c
set l (l + 1)
. ?& k+ b6 k- Y# Y]
6 m  k) s' ?( K( @end  x9 d2 z- O* Z. z- N5 y
$ @, E9 c6 r9 H# b
to update-credibility-list
: F/ Z, e9 O9 d% O2 u- _let i 0' z) h# X( z) u/ h6 j  \- o. w
while[i < people]
3 V2 ]- D5 q9 z3 u0 Z1 e0 @8 d: ~[' b/ \* H) v2 s; l# n. q- t
let j 0  i# H. y& @5 j- ^. J' T& e
let note 0
3 g2 ^' m4 p7 h* a0 }let k 0" Q# S7 ~! t' T4 }, w9 K( [
;;
计作出过评价的邻居节点的数目
. D  y7 P4 X" E4 uwhile[j < people]
1 i7 f/ E" F- `; t[: i* Q  y$ @. }# Y+ l* F
if (item j( [credibility] of turtle (i + 1)) != -1)! z9 t5 z  _, R/ M
;;
判断是否给本turtle的评价质量做出过评价的节点1 Y& i  @3 U# Z3 `4 ~/ C
[set note (note + item j ([credibility]of turtle (i + 1)))
- x- I, \" _: o0 M, e;;*(exp (-(people - 2)))/(people - 2))]

/ ]9 G7 x$ }" P, Xset k (k + 1)
; \: Y& J% v2 E  Y]
" O* h- t, p' n" j. s) t( Nset j (j + 1)
2 \. R) m3 {9 c* i( `! ~]6 R0 n. {1 W& ^; j" d
set note (note *(exp (- (1 / k)))/ k)" ]4 e) E0 n6 t; [; ]
set credibility-list (replace-item i credibility-list note)" Z- n1 H% m; l2 d
set i (i + 1)+ u) A2 f9 I  A- q- c+ @0 E' B" J% ~
], B' k! \* g8 o& E. v& W$ c7 ]
end
" w2 i% A2 n; M% m
1 i" W' N7 @5 u* hto update-global-reputation-list
7 P( c* t1 U& n: T+ [" A9 m6 d/ p! n( Klet j 06 J5 s1 b$ f1 T' D  v: h
while[j < people]
: M- j) h% w- Z[2 `4 C$ N# C8 {9 i) w6 c
let new 0: C: Z; C/ C6 g
;;
暂存新的一个全局声誉: v  e8 [5 ?: F7 m' c" G, Z1 Y
let i 0" k. Q3 X) j  }- S
let sum-money 0
- N6 t' y1 `) M7 f8 O' Wlet credibility-money 0
" X( x8 J" U. T3 swhile [i < people]( W5 C4 }$ k4 a9 Z
[* [* l+ f! E' y; m6 C& p  R
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 @% `3 p7 i; O* qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 P: |9 ?' t6 \% _5 iset i (i + 1)( g: s2 J& S% g' k
]9 ?/ O, N: b1 W3 O5 @5 X3 b) C8 D
let k 0
1 ~. n& |: r' A+ llet new1 06 p: S9 c& l* ~2 p$ T$ A1 M
while [k < people]
) U7 D2 }: c6 T, @9 y[& d8 O- I5 M* M3 p7 |
set 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)
9 Z3 S6 Y+ g9 h5 L, Wset k (k + 1)
! K+ ?5 v* ^. {6 u/ b]5 b( U$ z0 o% m; z0 @; R) |  }2 Z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, J/ i* p1 ?5 D. uset global-reputation-list (replace-item j global-reputation-list new)
6 C5 D* ^% v+ dset j (j + 1)  ~, J) c# a5 g. n0 K
]
( _* Y- N3 ]1 T' v4 Dend
/ G( w1 V1 \4 C( z, b3 m
' p" b7 l9 S7 C7 y8 S( l- v7 ?6 ~  @
8 n4 q. x4 I# r
' }- t2 ^5 |# k/ l. x2 O" O+ gto get-color* I8 l, u7 B% A2 b4 @+ j2 t
) A% L# o7 k" |  k  r" B8 x
set color blue

# T+ _6 c% E1 i# t4 v& Eend7 U7 I, @* q6 h4 H
1 ]" k' b7 f0 V
to poll-class8 m/ C+ g% \8 h, ]! l$ s
end
2 v( e9 x* E) d( Q( R% x6 n$ S; L$ o0 J$ l" l5 \) y$ }( W
to setup-plot1
! h- }, J7 M4 f# W3 b
* q- F) V. j! ]# K7 \set-current-plot "Trends-of-Local-reputation"

9 W! a# S. ^( v( P! U' d# H' R% G" X# Q; d9 w
set-plot-x-range 0 xmax

* d: y( S) B1 Q
5 e$ d4 ?& d4 G( g5 J7 ?set-plot-y-range 0.0 ymax
" w0 S* L4 Q$ m2 x5 _
end* e8 ~' w4 {( g; x
1 a+ T1 P, n. d/ j0 j
to setup-plot2" s* l" l% K5 V; u7 `2 t
' x( O1 m8 }: @/ b4 p9 u
set-current-plot "Trends-of-global-reputation"
; X0 ^" ~# s: c9 N" Y) }

7 s, o$ A: }2 e' T1 u1 Gset-plot-x-range 0 xmax

  t  Q. H  C1 W, @- D% {! x# W- V( W  j/ A) w8 M
set-plot-y-range 0.0 ymax

: D5 E6 y! F1 Jend
% R6 o: @; u/ b$ S- x, y4 t! M! C: I4 w& l% G) i; v' A$ f0 G
to setup-plot3& f8 A- |8 r/ g. D) B3 E  x

* G6 _9 b% j# Hset-current-plot "Trends-of-credibility"
* Y) o. g& {3 x% G! e

  R+ S. S% w- H/ P/ dset-plot-x-range 0 xmax
' m- \3 A; }4 i6 Z0 j+ [

8 {, |. V6 a8 X" u6 t7 fset-plot-y-range 0.0 ymax

8 w/ o# d& t& send5 @* i: o0 S9 l/ u! p  s3 e$ B8 X
1 E5 H4 u) [9 {
to do-plots$ v) G' q2 y5 v2 }
set-current-plot "Trends-of-Local-reputation") }& Z; _4 Z1 J5 m
set-current-plot-pen "Honest service"
7 R: q% }* J* G& k* i' l- T  Zend1 ~. Y" A& {& O1 ~
3 \+ T8 \/ o/ x" q
[ 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.4 H: M2 _; b# x
5 R0 `& v2 f; M
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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