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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:6 p/ [. _/ i0 c6 V2 H
to do-business ! f* ^- \' J9 X# e/ X0 H& g
rt random 360
4 f! [, z5 c- e+ F  B fd 1: x' b2 U9 ?7 X
ifelse(other turtles-here != nobody)[
3 C2 x+ M6 q; e9 A8 h. c0 Q6 }   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.% q( V/ r4 E: M! f4 ?
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 H* x# t5 Y& C6 q# N0 w+ w1 `" t
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- _# m0 F) v5 {% }$ x
   set [trade-record-one-len] of self length [trade-record-one] of self2 N0 G- L2 {: H6 W; o7 d/ O
   set trade-record-current( list (timer) (random money-upper-limit)); d) d6 ^% m+ S& D; V7 U
8 E( y) {8 h0 I: W5 D1 \
问题的提示如下:
3 Q6 P$ x" o/ z: J, Q
& l$ z' o, t3 werror while turtle 50 running OF in procedure DO-BUSINESS
' F! |$ E( U; u8 y8 w9 G( t" G  called by procedure GO# D2 @  v9 S; b9 g& p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 S, D9 `8 _  H$ w
(halted running of go)
( V) L: ~% a8 H" ?. H
1 w/ R" y2 k- G" B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~~* U% r3 L) A/ k; d: }( W  y& Z- O
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% G+ e8 a% Z7 n! t' n. @
globals[$ [4 b  Z) ~8 m+ U/ `* H6 j& W
xmax  \. e0 q2 U3 J1 h. y2 y
ymax
( ]' p3 I; _, L' i# T- ]global-reputation-list
/ z" X& y! i0 L- N  F% A( \4 F' v1 D+ b2 U' t% y/ _# t* |
;;
每一个turtle的全局声誉都存在此LIST
% ~1 v* ?2 c6 c* |credibility-list* h" ^* R! E4 `* F! B
;;
每一个turtle的评价可信度
; }% j+ Y, F6 m9 ^9 i$ yhonest-service
1 v; o7 M( a+ g% [1 K" punhonest-service
: P  F# r* h) S8 [. Z5 c  T2 Ooscillation
* R& D! ^8 `: D. a: Irand-dynamic/ p$ E5 {0 Q$ `/ ?  P9 }3 l0 e
]
( \5 ^; s5 O+ |0 C. I
# d6 R* T* F9 H1 t$ |( T5 d* Lturtles-own[2 z+ P) \- A! b& C" t+ y
trade-record-all# }9 M0 E4 P6 `, ^; C% l" j
;;a list of lists,
trade-record-one组成( i, R0 @! N- o. t
trade-record-one$ [" p& ~: h$ `$ R. R: C
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 T4 D% V* O. y9 P1 d- n3 o4 R, Q2 n
;;[
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]]
+ m" y9 I& n/ u$ U2 u) i' Z) E3 mtrade-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]
: }  N! B- r. K( F: H# ~5 wcredibility-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list6 ]0 i9 x0 Q- f* g1 F* n, F: o
neighbor-total0 e! B3 E: l& S: p& }8 h& J
;;
记录该turtle的邻居节点的数目
7 v. Q& G& \% x% K; \3 atrade-time
4 S+ W" \7 F; O6 T$ x# \7 p7 B% ];;
当前发生交易的turtle的交易时间
4 d0 ^2 j/ @! F+ J7 uappraise-give$ w$ I6 A$ x2 p3 b4 V- s6 `
;;
当前发生交易时给出的评价' @5 I. R4 a4 Z' s. S4 l( s+ ]$ u& d
appraise-receive) W: j. w( i$ C" A
;;
当前发生交易时收到的评价% g9 C+ e7 h7 _: g
appraise-time
, O( D7 f" `' z" y;;
当前发生交易时的评价时间9 l7 P; O3 q0 F9 \# Z7 A
local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 Q1 e) q2 O4 x$ ~
trade-times-total
1 R% x/ [6 g5 h0 L' P;;
与当前turtle的交易总次数
3 @& E1 s3 @9 ]9 W9 s2 u* ~  gtrade-money-total7 H( q3 M+ D- m
;;
与当前turtle的交易总金额: Y3 E+ U- G4 j+ W4 m
local-reputation# a6 Y% x) w/ q
global-reputation
: z6 ?5 D2 K  p  Q0 O0 Dcredibility
3 ?$ K* @5 B( @5 r5 \" ]- g;;
评价可信度,每次交易后都需要更新& D" u4 U' \; O3 ~: u
credibility-all- r, l1 ]8 Y1 ?- p8 H
;;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7 K& n/ p4 l# V" j$ D

3 [5 Z: ^3 G* N* ~;;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
" k0 c; z$ _% m7 `$ B4 mcredibility-one
1 A( }% z( Z. g  T  k;;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
2 i/ J- b% e! r# x7 Z) R+ ^global-proportion  K" e9 o# d# F
customer- z! c- V8 ]$ l& x7 P) n# ~+ \4 O
customer-no7 T- s  \# v: Y' t! L
trust-ok
0 w* j$ M) q! Q. k/ F1 Dtrade-record-one-len;;trade-record-one的长度
% Q% A- f6 u0 ]]
2 F0 ^, E+ ~# ]" _/ }
) {  H7 V! u5 ^/ V- s1 K! w* A1 O. Q;;setup procedure$ d; X! @3 w) N5 t8 o; t& n8 B

. W: c, r! L4 R. O1 U* Yto setup
8 X6 E7 h; V' a/ y. n# g
, k' q8 _) n$ _6 r# Gca

7 }+ {8 @% N$ T4 m- M; s. k3 s+ e5 z% T( p, P
initialize-settings
. n" N7 h* G$ X

  I1 W& I' j! j" ]! H; ]& pcrt people [setup-turtles]

6 {- Z# x! p7 F  n! ^7 r0 V( j2 A$ {: y5 q/ g" x$ T9 p
reset-timer

8 i! r2 f. o! @& I  d! D9 q! y5 j$ @
  T1 V$ U: W- b/ qpoll-class
- `8 {# n3 F3 L8 B: o

/ Q4 }( v0 t% o" P8 L4 \$ Ssetup-plots

( x& u+ y; [# S+ s
7 i, T2 a1 U7 [. W$ Hdo-plots
6 K" ^( @9 w! Z. e0 I' h% S" c$ x
end2 ^" j1 v4 f( w6 H! D6 P
, r4 g  `" |) C" v$ W
to initialize-settings
3 @$ Z; V! I( ^$ ]1 t
& d/ H9 L8 B( ?' \0 L4 u9 w' rset global-reputation-list []
7 [3 P; u) F. A% i# a1 Z, B
. E4 B" U# j0 ^5 q% Y* \
set credibility-list n-values people [0.5]

+ K2 r, I( Y, I/ {, H# q/ \; w& I
' z% {7 K, P$ @; Mset honest-service 0

9 D2 l( A' t4 B  I
- z5 B( c, i( i) i( |  K; y" aset unhonest-service 0

  o1 m* d+ }, J8 }' W& n# o, ]8 u6 |- h+ a6 p0 `* k0 k' ^* h- v
set oscillation 0
! y7 ^. D) e! n) S$ O
% m& ~- a6 |0 K' D, T( ~8 N
set rand-dynamic 0
  C! ?3 w+ f* Z. B9 l4 z$ m
end. H% s6 _+ C3 P+ e
: S2 F- ~1 y( e4 N
to setup-turtles 9 m8 d+ ^- `) \0 M
set shape "person"
4 n% V* B0 ?. O7 H* [setxy random-xcor random-ycor
. W; L# t7 f* R9 Sset trade-record-one []# q* d+ ~! t! V* _* N3 ]  E3 f
& ?" R9 [% d0 C/ I
set trade-record-all n-values people [(list (? + 1) 0 0)] % c# W  F3 |: g/ h5 U6 f2 U

; X" K6 A* g: ]set trade-record-current []/ Z/ b" E. ]6 \  ?% B, d' e4 o
set credibility-receive []/ G7 Y! j" {0 z2 E  l6 ]5 q" t- O
set local-reputation 0.57 D* O/ f1 D8 b) r' i; d& P
set neighbor-total 0
4 ?7 u. u& K* ~set trade-times-total 0
  G2 o8 _" _! I2 \+ d' \! U  q# @1 ]set trade-money-total 0
' M# j; |8 T% R5 ^( uset customer nobody; `( V7 J) U7 {- t7 Q
set credibility-all n-values people [creat-credibility]; H9 K' L8 k+ Y0 ?
set credibility n-values people [-1]! V. b$ [5 j' n9 k+ M* y/ ]/ s
get-color$ _: z& K4 ~* ^% v# W+ a$ `
5 o* e& O7 k2 X- ?/ E  g* W, E$ p. ^% `  z
end
% @- T7 a9 Z2 R* Q& h: Q; p4 a& v. f& z; n$ C+ \1 F
to-report creat-credibility4 b, l0 G% J2 g. `# F
report n-values people [0.5]
" Y; Q6 v3 K" }9 S0 `* p; _$ z8 `, Uend
. w4 y' `$ d2 J8 m: j7 L$ ^9 X5 T6 ]! g3 O' r+ W6 E
to setup-plots
6 h/ O5 [7 B: F5 m- e6 X7 \5 q! V1 e1 l! A$ h- T4 Z9 L
set xmax 30

) P: f' p3 D4 M3 k" P2 E) i, K. J& r
1 O  A( H. C0 Q* C7 x  Z+ Eset ymax 1.0
8 |4 D/ `9 U6 W9 V! j( m2 ^

8 G( ?. Y  x/ a; a$ [clear-all-plots
( J6 {1 y0 ~7 v7 Z7 L/ O) s

$ K9 \$ V, U( {9 v. y7 Asetup-plot1
  ?/ [( Z9 R: i
! A6 D: z# e$ M/ \
setup-plot2

" d: [, }$ p+ r8 A7 w3 S7 Y- }+ i- ^, ]6 x# g/ r
setup-plot3

8 Y& g7 X5 B& V/ ]) ]end4 B+ e; T  Z1 T& H" Q! `

/ j, l/ X1 L( M0 |( D& P;;run time procedures* r8 m# E3 E3 ]) |0 l. u* G1 r1 }1 g: o

6 c3 ~- K4 W' \* s& q' {8 Kto go
+ F% p1 M* x* d
% n5 ?, q  o) M( p" rask turtles [do-business]
8 r  a5 o# B2 w/ W" J& \
end
5 h% r4 g) n0 _! n8 d, h4 |& ^) y5 Z* Q: g! r
to do-business
  V+ Q" R+ p/ ?/ l, ?
2 ~* `- i; b3 U: D* d$ n) A6 X7 u

, F: Y- N1 P  O1 y, N5 ^9 Q: Yrt random 360

' Y- y$ _! N' ^( i, l8 U
8 q- b9 [& n; B5 ufd 1

* c4 e. X) T  w( j8 w6 p. \+ J5 Z7 ^/ k4 m
ifelse(other turtles-here != nobody)[
3 j& O6 q. z+ w1 S0 M1 ^- M
5 Z$ u5 x/ T' g8 J+ S6 H
set customer one-of other turtles-here
8 s/ l0 E8 u, f9 w
) H2 ?& n9 N/ B& O
;; set [customer] of customer myself
0 @* R9 F$ j/ j+ X+ w8 q

" A7 d3 L" o, j! M( Z% s# qset [trade-record-one] of self item (([who] of customer) - 1)
5 Z6 P1 P4 F, U5 X# X( L1 V[trade-record-all]of self3 o' }8 g& L# S- D7 c0 B# T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. e9 P. b/ M9 Z# ?1 v* H

" U& v, y2 a4 K1 \. ^4 Uset [trade-record-one] of customer item (([who] of self) - 1)6 A& m5 a& w+ b6 F) Y$ H, A/ {
[trade-record-all]of customer
  F+ u8 u, V7 h- Y* M/ s* n

% w: c1 [+ }6 h( q; U; Cset [trade-record-one-len] of self length [trade-record-one] of self
1 `& G  e& P: f2 l) G4 C

7 T& O9 L8 I* {1 y% v/ Uset trade-record-current( list (timer) (random money-upper-limit))
$ c  V* b6 M3 a1 x
$ P: z. S2 B! l1 P9 O( F
ask self [do-trust]
) Z5 y$ G" }* {  g;;
先求ij的信任度; U! C- U! m& }
( \6 [" `; `6 e& ^1 [5 L+ V+ R3 n
if ([trust-ok] of self). F/ _  g# k" H1 \# I# P
;;
根据ij的信任度来决定是否与j进行交易[
* Z9 X3 O( |* K  Eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 a- m. M3 A  [  l9 d7 y! Q
! `. F4 u( Z0 p4 ]
[

: [# ~9 E8 N8 B/ x% p. A) c( q( U
4 a+ ^4 y' R! r; U2 X& kdo-trade
# p. `! H6 p. ~4 L* P& m8 S' R
1 c5 v+ L% ?0 o1 r8 A( H: B
update-credibility-ijl

2 i) P% D; ~4 T) z3 H4 y; n/ i7 G4 s7 K! k8 M# _
update-credibility-list: Z7 }- T, F( w) g1 D7 q, S, p# c7 c

/ f2 y  s3 z2 @1 x. ]% t2 L( j3 d+ o% g, Y. X. P% T
update-global-reputation-list
8 Y# J$ Z' ?; E/ O/ T7 Z

7 R! N4 i- c( ^9 z' R' Ypoll-class
' s2 N% J% @3 b4 r' S. \
+ w5 \/ P+ A/ A: M0 `4 i2 \
get-color
% c' G  s2 S. m* `9 X7 m+ f/ h8 J
' Y) v$ I* K- ]: d+ n4 T
]]
& S. Z3 P2 n6 [1 j+ B1 n& f
1 b' g: r0 T$ m+ E) k0 U( p;;
如果所得的信任度满足条件,则进行交易
3 ~+ {! h0 ^& V) W8 r
3 {. e4 J" j' ?( O1 l# O5 J! K[
; R0 W/ r" U9 c% C
6 D7 ]/ G5 [, ^% d
rt random 360

9 r/ l8 _7 _6 o, N5 Y9 ]' _- V1 w( |" S" o) k0 {2 Q  I, t: {
fd 1
! y6 s: d, F7 r& I; U
$ x4 D. [" m( [/ Y
]

, P. U* D' _) K' b  Y- L# @0 N% c9 Z
end
6 g8 }8 F2 _. A, N: M+ M  V

, y/ ~8 f8 i3 B* lto do-trust 9 }8 Z( l% J8 f/ `, s0 ~
set trust-ok False
/ x; V* }& w1 L8 \
3 K/ c# c  s) o4 w' F2 K  U. S! Y1 t
3 f" I) K, m: f& T- d6 h
let max-trade-times 0
! m- f$ q' |2 N# y% v, d: Tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]+ U! C8 \" ^" z" `% I$ n
let max-trade-money 00 ^' t2 Z" J( T
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 H+ ]$ t/ ~. P1 ^2 C  U
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 D, x* H. m3 Y5 ?/ N
! J0 p7 U- {- r: u5 |* u

! ^2 l( ^  f3 X/ Gget-global-proportion
6 C& B4 P0 d/ ^let trust-value; ?; i; b4 W1 b
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)

$ n  s1 x# i1 V8 E7 r% Wif(trust-value > trade-trust-value); ?) ^  Y7 K, ^+ H
[set trust-ok true]4 Q6 D0 t0 g$ l6 \1 X. V
end- G0 W" ?; @7 w4 O7 A

. y  G" |, n( h) ]to get-global-proportion
8 [' Q9 a) F* h6 S& Z$ a7 C# E) Aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): o& f" U; l" e! p5 p8 \, Z
[set global-proportion 0]8 ]% H: ?) M; L$ _/ e8 J  K7 C
[let i 0
. I& Z4 \6 u* _1 K" }let sum-money 0
# B0 t2 i5 q/ ?! T& [while[ i < people]8 l* e5 K; }8 h4 @# V
[$ S' a/ u! V# z! D& O1 M
if( length (item i
+ ^# J: L$ e$ J! [" C[trade-record-all] of customer) > 3 )
% {  @9 p. D1 I. e* ^/ X' t! i! S2 k
[* B" |* _6 O; A& j/ F
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 e# J3 Z1 g+ S; F& {]3 i* d9 G- f1 V1 r$ W" d
]
8 Y4 y9 U4 n6 k8 D+ s4 M; Slet j 08 Y6 d/ [9 T9 e2 y; {! |
let note 0% b! h; V2 h: z9 ~* |1 A, D
while[ j < people], n: J  o6 o& X( N, T$ ~2 e& Q
[( c' i" R3 D- {5 N6 Z. Z
if( length (item i8 O& y3 g) {( W& K) i1 p8 r
[trade-record-all] of customer) > 3 )
) u* M& F: V, n. k
[" C. D/ C1 ]4 W
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 w; D  i" T4 @: Y% q. J
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" _( D; {/ f. k/ F+ n$ ~7 t' j[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 T; G4 x$ X; B) M* r
]
* t$ d5 q( g2 Y/ M: n/ v5 H& l" }]1 o% U1 H7 b, ~# I% U. j- I" N; b+ M
set global-proportion note0 B# r) \+ l9 H" N: H6 Y+ D: ~' J
]8 u" s- K" ~" D
end0 F- \( G. g7 q" z
1 w! I7 c9 G# {' W
to do-trade
4 e% Y5 F! g" m  F: G% r;;
这个过程实际上是给双方作出评价的过程
, N! i  u7 n1 r) j. H4 \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- ]+ a# p' y6 Y" L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( ?0 |% V! g5 ^" \) {2 @: d1 ]set trade-record-current lput(timer) trade-record-current( b  _3 p3 G$ C
;;
评价时间8 ^& S, W. j* X  G  e# T# Y
ask myself [
/ \5 c( X+ P- y" p6 Tupdate-local-reputation2 Q* O: K4 k, X6 Q8 o
set trade-record-current lput([local-reputation] of myself) trade-record-current! `8 b2 M: n3 O  p
]
# K# L  D- j. ?/ U" }; H2 uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( Q7 X9 t4 D9 P
;;
将此次交易的记录加入到trade-record-one
8 j" ^) F" D) u6 l- kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 f: d9 D* `/ A, B' n: L3 flet note (item 2 trade-record-current )! D1 I" f, q& q( \7 l5 x% _3 s2 i
set trade-record-current- {( Z4 T. v. m/ d8 Z( m- m
(replace-item 2 trade-record-current (item 3 trade-record-current))
% ?$ R% `1 O$ {0 O8 Y  J
set trade-record-current
' W- k0 ^( ^' F7 G(replace-item 3 trade-record-current note)! C5 z' ?) e6 J* I+ }+ f9 s. E

$ A( D  H+ {( L! W( j

* U$ |9 t1 h+ M  eask customer [( L3 d1 a% D# A! T4 y
update-local-reputation7 k4 R2 D3 g; h+ |/ b$ f  I7 ^
set trade-record-current8 q' r" p3 o2 t' Y4 S' G2 K
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; s! B3 u- v5 u2 q
]
& q6 W  S! J+ t) s! Q! \  ]0 H& N- O

. o/ p! ]2 _  c0 ~9 d1 |set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 g) ^$ \  Q* e* [/ ?
+ G  A8 U$ E, M9 v3 W4 s1 a( K# F2 X
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( p! u' t. {: Z% D;;
将此次交易的记录加入到customertrade-record-all
$ K. E2 l+ K+ uend1 T. A( I1 o: h4 F+ F- @7 U
1 c3 v2 e& F0 I
to update-local-reputation
8 Z  {8 l/ L2 h/ F+ E4 @set [trade-record-one-len] of myself length [trade-record-one] of myself9 l+ Z1 `! T  z& ^
" C: t  n1 a2 i5 @. t* I

( D1 u- R" r' n( a;;if [trade-record-one-len] of myself > 3
" B: F- U0 _+ |/ H  P9 l5 T
update-neighbor-total, V1 I# g5 J  A! b
;;
更新邻居节点的数目,在此进行
* S: c5 E/ T$ Y+ h4 n) Olet i 3
" I! F  ^! ]$ o% Zlet sum-time 0
$ b4 {+ A# z; x0 H& mwhile[i < [trade-record-one-len] of myself]
% H. P- \) @( ?% }9 o[7 o# K5 j* D* ]9 K9 A
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 P7 Y8 T; T) E+ y7 m# e5 \
set i
3 }+ u8 J2 X1 i) @3 ^7 o+ e( i + 1)

; j. h4 T2 J) @5 Q: T" C]9 h  f5 h0 K% O* _
let j 3
, f5 T8 X4 n5 \3 elet sum-money 00 P* m" P# f( x& ?6 K$ T
while[j < [trade-record-one-len] of myself]
# J) [4 o& k- ]+ d$ ?5 N; x[
+ d9 @* e# p  Q" Z) ^7 Eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)5 Y% R; f+ ^7 o$ _
set j- N0 j( \6 P& O; C- E
( j + 1)
- f7 E! M5 m/ ^/ _- h
]1 W8 f, ^6 G  g3 @& j: C7 y
let k 3
) [/ k2 F/ ^# G  Hlet power 0
8 b  S+ \5 g" N- I( h7 U2 _' u% Clet local 0
! P3 y, O( w3 r8 uwhile [k <[trade-record-one-len] of myself]
& l5 \8 ~( \+ Y( E3 n[
  E) A* _# q$ ?3 H+ l5 _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)
/ q% u9 v  ^6 `2 c& H6 ~6 f0 _set k (k + 1)$ ?* R8 P% d' V& q9 f( n$ }& a
]
2 H  n% M7 o( @6 O" ]- {- n& [set [local-reputation] of myself (local)
2 F0 ~4 j. T7 W3 a8 d# W7 pend' f, F/ `% W! t( r7 X

1 e$ w9 M2 {0 H6 Sto update-neighbor-total
) {8 v6 D" S0 Y7 I, L  Y; h! C: y' q3 v
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ a9 A" C7 b2 c% X) v3 `
/ G2 C! g: H4 |0 |

* `* C. o) C$ t3 Mend
- p# K* e( U2 H
9 A6 W, D; K; q5 z$ J+ n" C8 z( ]' vto update-credibility-ijl
1 F/ P1 K7 x! C, S# X3 z+ x) Q/ F+ t5 M7 B" c+ E
;;
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。
& i4 Y3 i5 J9 U3 B, nlet l 0; F, I2 b  b9 ?1 Q) V( ]
while[ l < people ]; e* i* |" x0 h, r) U& z6 h
;;
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
! f- K+ a! P; k  L( t" ][5 Z4 k. C( m5 r6 b6 a
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 B/ V3 e* V; W  C$ [& k, j
if (trade-record-one-j-l-len > 3)) V" x- x, x1 K1 z. Y# J8 S5 C& o
[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! T6 f4 Y6 u* k2 ^& J  @0 Z
let i 3
* s# M6 Y; e# ?  a4 Rlet sum-time 0# v/ a! I, p: t
while[i < trade-record-one-len]+ z2 j/ x5 [# o+ f8 S1 Y
[7 b1 B8 M$ w. }$ f  s9 O/ @: a
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( \  F# s* y0 Y% xset i
% C& {, e; P" H5 S4 p& M" ~( Z( i + 1)

1 ?" R; S# ^& a8 c/ b]
) Z; ]! v0 W- x9 |" [/ w' J) olet credibility-i-j-l 0
' M, B7 }7 K' l1 r;;i
评价(jjl的评价)
; b* D! a# p5 T2 n9 y0 Klet j 3$ R! Q& m0 N' c+ [5 H
let k 46 w# a- H7 D; S- Q, \
while[j < trade-record-one-len]8 ~! U. D! H$ D- X6 |5 q# R5 I
[
5 i; [4 L, H# `3 i- |6 @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+ i6 X% p* T5 K! [' X+ m' _5 F& _
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)
; C3 W8 o6 c: [/ u( g. Y7 ?set j3 _) m' i( y% R) A% _& |
( j + 1)
, a. I9 }+ N& |0 y
]
9 j. x3 x* K8 Gset [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 ))
% V  [/ u: n# u/ d: V2 o3 m1 A( h# @( x- H+ \: N- P
( X5 a$ t4 g, U2 _' s
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 j, r; s/ k4 ]3 B;;
及时更新il的评价质量的评价
; c5 @* j2 h- O' h) qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 @5 x# x9 M+ u" F3 J
set l (l + 1)
) j  s, }2 v: ?4 P( o! k4 l" P]* i! P5 o. f9 F; X& D
end
2 i. ?2 y8 S, x* I9 ]( y- G5 P# C" p7 _8 d: N+ ]9 c
to update-credibility-list2 ?6 p/ t# ]  H4 @
let i 0
& V' P; R! W3 ^1 Uwhile[i < people]6 v' i7 T% c% N- M7 z6 u6 F$ t
[4 }, i# r! V! U6 G
let j 04 [' @8 P' x6 m9 K& m4 y) A
let note 0
" V4 ^9 E" n7 i& S' E- I: d) Clet k 03 Z& i2 p# M& p8 g8 V
;;
计作出过评价的邻居节点的数目
( O" {/ E' P0 X: Q: ^. k8 ?: Uwhile[j < people]' S& ]( [' W& y( g. w
[( H- z3 {' X; c* @& K
if (item j( [credibility] of turtle (i + 1)) != -1)
) I6 \# R- q) G6 U;;
判断是否给本turtle的评价质量做出过评价的节点) L* A9 w6 e! `2 A. l- P
[set note (note + item j ([credibility]of turtle (i + 1)))) t  c  W' f$ K' w; t8 j9 X. j
;;*(exp (-(people - 2)))/(people - 2))]
, @: h( {: n6 D' Y
set k (k + 1)
, V5 {3 v/ E( S% Y7 x6 h]8 _- ]; {0 \. c3 T/ n
set j (j + 1)
& X1 O1 w) v# B9 e" c+ P3 f]. E. j1 I1 g/ L3 k' P2 z
set note (note *(exp (- (1 / k)))/ k)
+ L5 C' Q: z+ Q' X% C  @* ?set credibility-list (replace-item i credibility-list note); N+ W9 v5 M3 `- c* k4 r; |
set i (i + 1)
% B, G$ d, ^& r8 x5 ^+ ?]
% C4 _* L% R# s) M' Nend
0 [6 G4 t0 M1 i% m0 o1 W8 ?/ [8 v6 s
4 f" P9 n" Z8 \+ |& e# X) b8 Sto update-global-reputation-list
( r, N4 Y' C6 u7 [9 Y: J! Q( dlet j 0/ Y0 y, a  |2 B3 Y- S
while[j < people]# U. f6 f2 \% ]6 {7 W: M2 F
[
  M- T% h; o5 {4 e% @! d9 jlet new 01 t) L7 j2 ^& _8 ^) ?( D! a
;;
暂存新的一个全局声誉) ?. S( ?( i1 O3 Y
let i 08 G  l; ]- E5 K. d+ L3 G6 y
let sum-money 0
- c3 y  m, r; g' Y4 Y4 e; y% T2 dlet credibility-money 00 w& ?  |6 b6 R- {4 T7 {- j0 k
while [i < people]
3 q+ Y9 t# K" f8 `& o8 c3 W[" I! n$ c8 U4 F
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( s* c. b, ], z) S: dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) j  [  S9 |' Xset i (i + 1)
3 d! E8 n3 {- r! d7 L1 L]5 ^  i1 w2 ~- |2 b! n9 B9 s
let k 0% v5 c. j' A" O' d; j
let new1 0
$ ^" Y# [. H0 r  i2 ^$ `6 y) `while [k < people]
* L% x* M) f& a. W7 Y[7 D. }* [0 m6 a2 M' y
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)
; s: y5 ?) O, r# D2 ]3 k4 {set k (k + 1)- R: I7 [1 x; @" B0 K
]
( T+ I4 `1 P# u% wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 D* Y3 E* c) f6 D5 Iset global-reputation-list (replace-item j global-reputation-list new)
9 b& Q% D4 i, q7 o: Hset j (j + 1)
6 d7 K9 B+ _' t( K]5 M* a. k) F- r4 K2 d, h; [3 ^1 L- t
end2 G& R- m# a# p+ @* u
" J2 I6 D/ w7 Y- \! T) B- x
- m. r- L+ I. a1 P! e

, Q, f6 F  c% X, k# {to get-color5 x4 h/ c  k0 R- h) k4 B3 C6 _* ]; }4 e

2 V& B& C9 ^2 L5 \set color blue

( Y7 i1 E! `& r1 G' ?5 q. Kend
+ W5 T+ z- |/ m! P% ~) s( H6 D+ F4 T5 G
to poll-class% U% l/ S0 O% {( J8 h) Y) u
end) C( n$ p% H, f
. o3 T( K; p$ |2 l$ Q7 j* s, w
to setup-plot1* l3 \$ N  ^+ D8 h! ~6 P% R

. C- x$ ?: f4 Pset-current-plot "Trends-of-Local-reputation"

" S- s) x- W# d3 j" v- [
- K/ [: s; E% Z2 c1 M( E3 Vset-plot-x-range 0 xmax

% c4 X/ |. L; B( b8 L* V- D6 ]. s0 L3 P; d+ K. v% H( q
set-plot-y-range 0.0 ymax

; H0 v" |& P, y8 Qend
7 {9 l% b; a, A  A6 W
! |7 `& ^0 `; k, w& y. nto setup-plot2
' S; J, r2 r( o* f( T- c" C% i1 S  f: n' S
set-current-plot "Trends-of-global-reputation"

# p& @& {" O3 f: K3 M- i5 P1 w+ P
: w' \' x* \( H6 t% K# G6 {set-plot-x-range 0 xmax
" D- k8 m) S. j6 R5 n# B! j7 q# Y  [

0 w& W3 I5 t, ~  _" @  K5 ]set-plot-y-range 0.0 ymax
  e* l! F0 Z3 }1 N1 ^! K( f
end5 i4 a5 X% I5 z4 r  P, \
6 j2 i* s& `! f/ v* A/ L$ e) `
to setup-plot3
* z2 C2 `% f/ J; M& ?" U7 e5 ~7 v. o9 B7 ^
set-current-plot "Trends-of-credibility"
1 u$ j# H& ^" l; q0 c5 m/ [

0 N6 F7 {4 U2 \6 }' xset-plot-x-range 0 xmax

6 ?. T1 C& t  R$ G& T& i' Z4 I* i% v0 a0 v! ^( [6 Z! g. `
set-plot-y-range 0.0 ymax
+ ]0 U5 D* D% x6 G: a' Z
end
  F( i% G5 |! @# O# x% c" z$ g0 F9 x& U
to do-plots
7 _4 a# V6 n, |; F" x& fset-current-plot "Trends-of-Local-reputation"
+ c4 i) [3 ]( H6 N3 R: Rset-current-plot-pen "Honest service"
; u6 s3 I1 [' l9 [& G6 nend/ w! {. {/ r4 t* b
( u3 p- i+ Q* V
[ 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.
6 w8 r- l5 A" ]. A8 B! o: w: U! _  m+ ^* S  e  O- b& ]
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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