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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:
) c5 x5 L- ]' j( _0 _to do-business . Z% h$ A0 \. y) v$ c; z
rt random 360
) C$ t" G- ]7 R/ N fd 1
1 o5 F& }. O0 d ifelse(other turtles-here != nobody)[
/ ~) ]; l4 o( V0 ]   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.
5 L% x/ ~# z8 X! ^: ^   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 C' ~* n5 u9 i% \, v2 R
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
/ P5 j8 m* a" L   set [trade-record-one-len] of self length [trade-record-one] of self" h0 _6 n& [. {& K
   set trade-record-current( list (timer) (random money-upper-limit))
4 _5 n1 M' j& `- u, X  G
& ?1 Z2 X9 f- H问题的提示如下:
$ J! j% d( K) o$ f2 W& B6 w( V7 s& b0 T
error while turtle 50 running OF in procedure DO-BUSINESS+ R  C- Q* E( }
  called by procedure GO1 O! R7 E. O( d4 i# m6 s
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ E. F* N# J2 F$ k
(halted running of go)3 J2 U& s/ p* X) n4 O/ K

2 a* G0 [) l& ^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~~- T' h; Y2 N6 B* |7 @
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
2 w3 y) v: z6 K1 d% q  kglobals[! m, `/ c$ o; G  V# g0 i8 g( |* V+ C
xmax- }' B. c# z! M0 |3 _  O! l* u- Q
ymax5 h8 K. \' c: ^5 @& \* k# t' S
global-reputation-list  R7 c& O' \( R9 V& }4 t

! n3 y" \+ B  L; }) B1 Q;;
每一个turtle的全局声誉都存在此LIST! k1 v0 T4 Z: \+ ~
credibility-list0 E# C; K9 d- ?4 L
;;
每一个turtle的评价可信度
& M& a4 O: @! ?/ j! N1 @honest-service
/ N  V, j. ?) b' F: Eunhonest-service
: Y+ Z8 `; F( {" Woscillation) |6 V+ S) z! c8 P! F: x
rand-dynamic
. I1 `9 L( q+ O5 \]
4 M) x9 q( X( c8 k$ W, c% z. T$ e! q
turtles-own[
( K0 \- ]$ Q  q( h* ltrade-record-all" {! w# a7 K" ^
;;a list of lists,
trade-record-one组成
2 Z3 o, d( N% D8 h$ U- E: htrade-record-one7 f% w" U7 w$ }: P! G
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 |: |4 Q: I0 }4 q4 u# y
# X& K1 y2 o! |) a1 k* V;;[
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]]/ z- i6 A( L. x2 ^
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]/ {" W  `( N& @0 E4 y
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
3 c* j  D6 N# u( L) Zneighbor-total4 d% w  D; y: X7 s
;;
记录该turtle的邻居节点的数目6 J' k2 X- H+ f! B. N/ J4 [
trade-time# k# J0 s9 p2 e
;;
当前发生交易的turtle的交易时间
3 ], a8 a/ j# j+ g2 B3 v% B3 U9 j/ cappraise-give  a6 M7 i: T& j
;;
当前发生交易时给出的评价1 W3 i3 F- J& t0 d& l
appraise-receive
6 y- N/ }! D( \$ [$ h;;
当前发生交易时收到的评价+ D- ^/ H9 \2 J( R* _5 L" R5 X+ p, `
appraise-time
: U" M% L. {! q; a;;
当前发生交易时的评价时间
) X2 L- Z8 G& W3 W0 qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉7 k8 V  x, S. o% R2 \9 w: X( I
trade-times-total) s, i% V' m! @; u/ ]- W. I9 t% J
;;
与当前turtle的交易总次数1 S! d' u2 Q5 S: G& M
trade-money-total
+ d/ `2 e* C* r- V( w% e;;
与当前turtle的交易总金额. h7 `* v" \: t$ S# u, v( X
local-reputation
0 P+ W+ P9 P2 |" s: U7 ?# Tglobal-reputation: S; T& r( Z, d. t
credibility
" k8 V0 `: s! c4 H$ `;;
评价可信度,每次交易后都需要更新. p" b7 z: w! ~
credibility-all
4 b# _! A; c) u6 t+ w  i;;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
9 e) w6 b6 z1 L; R: Q7 L/ f
# i6 r# C+ o) q: y7 R# w# p;;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
' h  `+ ~6 H! Z, y% E5 ~  D+ Hcredibility-one
: f1 D* t7 x- _; b( B4 q7 E9 {;;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
* F1 Q, q# b9 r+ \global-proportion6 r1 D) u0 N3 }/ w, V' L6 N
customer0 C( O4 F3 ^/ Q+ {8 ?/ e8 W
customer-no
0 F8 r6 X. B6 r- h% ]% }9 b2 |trust-ok' r- O  a7 Q2 K' j. j
trade-record-one-len;;trade-record-one的长度
% X; X. p4 v+ r]( O  f) x% U7 Q+ J
, m" u& Y' V' b, w$ ^5 U% q
;;setup procedure
) I1 E' I9 `; ^2 @2 C  i. a2 A
( a# d% p& T4 }9 C# B+ [to setup' e* i) a0 N2 u$ w3 I# K# W

) [- m0 h2 F  Cca
" i; F2 H, P  q. l

9 \; ?. S0 w; c7 D1 Z( a; zinitialize-settings
5 n$ D9 d! w* z7 z4 b: d

- A# ]' j+ W9 D/ Qcrt people [setup-turtles]
  H! ], n: e  g0 P+ q  ^( O; r

# V/ a  o, x" l- O2 W( i: t  wreset-timer
' }9 O( t" B& U3 {

* {! x8 @5 I3 v+ S" |2 ~. N7 q- O8 ]9 Zpoll-class

1 \. v0 l, i3 B% Z5 \; K8 @0 r0 d# i( n2 [- K
setup-plots
' }  F6 x! G) [- |& J  G

+ \( g) m- H! A: _8 K) Sdo-plots

7 e  U& y; b: w6 V, D$ u( A$ Wend6 N$ H( ]: K1 v- y. I3 Q2 [
& Q, e- E% }4 I8 I% C# L7 p) R
to initialize-settings
7 O+ }" n- r) {) I1 R! ]
0 ]( U! q, Z+ A7 H& \  wset global-reputation-list []

7 t4 n0 [5 u7 G- k. n9 {# `3 {) q/ g3 Q5 i# f
set credibility-list n-values people [0.5]
5 x& @) Y! e# }, L1 V( N
& O6 c+ j0 z5 m9 \# w' o7 \
set honest-service 0
7 I4 ?" ^1 Z( [4 R* K0 P

! c4 _/ k, o7 p0 J: G2 ]6 V' Dset unhonest-service 0

- N5 ?# e6 e# {* F+ D2 G- `0 ^* y: B& a7 D1 x- {, P
set oscillation 0

7 \6 [1 T( }6 z2 u
0 @; ?8 w& J6 _& r7 _set rand-dynamic 0

# G' E% p' @$ `+ l8 t1 n; ?end( i+ z6 U$ `- o- \) C: r
( m. l: Y4 C# V+ S2 o) e
to setup-turtles
4 h6 a* ^- B% |6 Kset shape "person". L) R+ W9 U/ J, I
setxy random-xcor random-ycor
6 H4 c/ Y, q+ zset trade-record-one []
  g% W& c. P8 l2 ?$ z" [

' [, o3 P8 v$ y9 F) L% gset trade-record-all n-values people [(list (? + 1) 0 0)]
1 s  [- q; `3 x: y# M; \
" |9 d1 j  W) K# o- o2 h7 S5 }8 t
set trade-record-current []
5 @* [! |0 B% ~( oset credibility-receive []- ^7 E8 D$ l9 @5 U* ]
set local-reputation 0.5
* O4 G9 R' O0 w/ p: V( Y) A2 Kset neighbor-total 0
' o. L- m5 Y* x- j0 E' C, Nset trade-times-total 03 I$ z( }: @" {! h" j- @1 @- X
set trade-money-total 0# V/ k" |8 V  T* v2 P/ |: g
set customer nobody
4 |2 H) o- ], J7 v7 bset credibility-all n-values people [creat-credibility]
# f  }9 U0 E) c6 Iset credibility n-values people [-1]& R# f6 x& w6 c6 v- H2 R# ^
get-color
" T( {7 T2 }) e: }4 [% G
: u1 a1 C: I4 k- t" s
end& M, r2 [( t% a! h  k
8 Q( i& `- T: X
to-report creat-credibility
+ v; G0 G' l" t- o  Lreport n-values people [0.5]  g7 _& F8 l2 B  _6 ^4 T
end  u2 u: J" Y8 q0 ]5 F
2 e# t. i" ~9 Y, V7 i5 N
to setup-plots
3 q7 q. n# u1 G! V7 p* h8 l2 F# S5 u' i4 k
set xmax 30

- O" n0 b5 s% V! \9 o
7 [( B" Y/ }5 |. nset ymax 1.0

/ J) e( \. v5 k( `! x. Y" g2 w/ v7 O- Q* T$ a; ?7 U: n
clear-all-plots
7 ^; }2 Q/ |- ~, x9 n' H' g6 o
" z8 d! x8 D4 A4 S
setup-plot1

& @/ v6 ^& H# K+ s* j0 b1 [2 `! c- t$ b& T
setup-plot2

' e5 D" z4 j( C& X0 M
1 d/ j" @* ]) O& C, z+ H" t3 A% xsetup-plot3
/ B6 o4 I% H# B
end
* e, u3 u; a4 J4 V) h/ K7 L: ~4 U" g6 X8 S& H' `; Z+ R
;;run time procedures
- }# y. `( K! ^* M  R% O9 G+ u( l) Z9 G2 `* d& v
to go
$ T- r, f! L3 G2 N+ g4 V" E# ~+ n) ^1 p. Q4 `4 i5 _3 x
ask turtles [do-business]

" D7 x: L& a! L, O5 {end
, P; h5 ~5 `1 w$ P$ ~4 g. x% F9 p7 n& F, F  V. e
to do-business # l  o; q) D! Q9 L" W# }) R6 X* `

9 [+ Z2 _; ^- V% q) m1 k6 I
- y& }( i  n0 Z3 {2 R$ prt random 360
7 I5 H* e: i9 L4 X" ^& c0 g! C- C

6 G6 X4 f2 Q" t( n; nfd 1

# t3 _2 o" a) F8 H  T- S* V6 o5 `2 S: B* d0 B% e4 z
ifelse(other turtles-here != nobody)[
1 h( g5 y: @5 L  b
: d5 X+ J4 u& M0 Y  U8 s
set customer one-of other turtles-here

+ F% k+ i# X, g( X$ A' H0 Y/ O. e; M9 ?0 A8 k! {8 W% x, e7 J
;; set [customer] of customer myself
8 c5 q$ V$ v  @3 H+ ~
- {. s/ ^( a# _& E. I
set [trade-record-one] of self item (([who] of customer) - 1)
9 j$ k# F9 @2 @[trade-record-all]of self
  ~9 @$ g; y8 w! w( P; G( l8 e;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 }9 W1 n" M  v% b( Q. n
+ c  O" K/ |3 e+ v, ~2 f1 R
set [trade-record-one] of customer item (([who] of self) - 1)% h9 F% x* B6 z+ b, G
[trade-record-all]of customer
: f% ~  Y* f  c  R. Q- w5 A3 R
- b: L" J) I: m, G
set [trade-record-one-len] of self length [trade-record-one] of self
/ f6 U; I0 G) h$ `# |
# |  Q' r8 x5 T& e
set trade-record-current( list (timer) (random money-upper-limit))

5 i) n, x- s: q8 T  Q2 T0 V( p  X# w  E
ask self [do-trust]% n8 e$ ]; e2 Z' }1 h3 _6 Y1 \  l
;;
先求ij的信任度/ Q5 W; z1 {3 B# H: Z( b

6 L3 o) K% m4 S# w. ~$ rif ([trust-ok] of self)
. q: I- p- ~& h;;
根据ij的信任度来决定是否与j进行交易[
1 A7 f: s! p* d4 t2 x  }ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ v& ~4 C" j& H/ G. ?. {7 e" P( J
2 ?# D7 A2 T! R' z9 r: |
[
. e$ A/ _* T; ]; j  M8 q' z
5 B5 T" L; X! F- l. x5 e# Z
do-trade

" v$ B9 N' t7 o+ s2 J0 w" X' S1 P% Q" R9 v) m
update-credibility-ijl
- ?( w' l1 c7 ~. }3 I

" M4 r, k8 U5 e- \$ \& ?update-credibility-list
# b- }) t+ @# ]- [# [& {
0 u1 c# w. ~! z6 j

; M& K" ]1 K5 `& r" dupdate-global-reputation-list

! J9 t' |  U- }9 K  a7 z9 j! \8 T- |8 U6 o+ F& M! B
poll-class

- R% }9 C4 G" E3 I: v( p. i( E; u7 H. l& R5 j; S
get-color

" B9 a) ~: h' l
. [1 c/ v. b7 p; K! `! i1 m]]7 Q' P) M6 ]* h8 V
- o6 g* X, P: i
;;
如果所得的信任度满足条件,则进行交易
* c# w# N- \1 f" C" M# ~- K4 ]
7 v9 i+ ?3 q* x  ], ~: B3 A[
* t' S# j7 X% O

+ b% {6 J: Z% ]2 ^9 Frt random 360
0 j5 {/ E" C& `- Z. V/ C& Q/ f

$ l4 r7 ~+ f* K9 N! ofd 1
, p# x3 M* I& b, j
% \# I. q8 R3 C$ k) e' u
]

+ R* F2 y' I, I6 ]! f; F( R* N2 E) B" r  R# p
end
" h1 Q" n3 d* V  X+ Z! w6 E
; q( A5 F0 p1 f% M( y7 r
to do-trust # n  b1 i( T5 w5 ^
set trust-ok False
/ a- ^8 E  h  i9 Q) _4 ~4 ?8 w8 [' Y& M4 v% D: h/ q

  q: \+ U( t+ H9 D! h2 Llet max-trade-times 0
! m$ R6 S- P: m3 Q# x! k9 c" \foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]$ z. K3 o: A- q/ X
let max-trade-money 0& V' N, p/ f  C: \: o) R5 |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* k5 ^+ z) Z- [6 G6 [. @
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 Z8 E/ H9 b( g7 \7 C5 q+ ]" ^

2 |3 s+ g7 M# n: S
' {% n. s5 Q! l$ ~4 M0 U0 d3 M7 N  p" X: R
get-global-proportion5 Q8 S0 e3 O9 V0 }) c. R2 I
let trust-value/ T6 \1 D' ]- h+ D, C
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)
, C- Y7 v  ~9 o" m) ?0 S+ ^5 B
if(trust-value > trade-trust-value)
! P, C/ e/ g9 _[set trust-ok true]
+ ]" {6 L4 s7 D" N: Nend
" l4 y. r: |/ ^. Z
3 |: v* D) K- C( n. ^/ M, S: P! Oto get-global-proportion* A. _" ^6 g# c
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' C, y2 C# x- w. l6 S& w; c+ d[set global-proportion 0]
3 d2 g6 \$ p2 _[let i 0
& A- z( R2 J+ Z  _let sum-money 0
0 k6 ]$ j& P6 e( H. c4 Q4 Hwhile[ i < people]
( @5 U7 p7 d' I9 |" _" s. I: s[; @4 C; l! M: O- n+ @- v! D5 Y
if( length (item i
6 ]7 I" K4 _/ E: e- `[trade-record-all] of customer) > 3 )

9 k% R* G1 m# u6 E: y( K  H[: E2 [8 v; O2 y7 |! F
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 E2 K- `; a  Z+ Q
]! J2 i0 T$ s8 x7 i. H, p
]
% x1 _- Y& \: w- `let j 0+ n- z8 d  {" X' t" `( ]9 m
let note 0, |# s: u' \5 w% ^. h
while[ j < people]5 o( I4 [! g' h. u  F- \
[8 l; C$ v* X- R
if( length (item i
) Z# c4 `$ H9 p[trade-record-all] of customer) > 3 )
4 J4 J( P$ O8 h! e  ~
[
3 \% z6 ~3 [$ z  wifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- t" B/ B* W& q( g0 X! y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ z/ [+ Z7 ?3 o  ]  t
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: ]. Z0 f+ [7 w3 D, y1 n$ X
]
1 ?' j' {2 [7 t1 Z) l; }3 E( i+ I]
" [$ R8 b- K! X* G' D9 j. ]& aset global-proportion note% Q5 s2 r, X. s6 P5 w$ ~
]
0 B; e$ D9 j, f& d1 rend
- A" o+ ]! Y) p  e+ c- Y$ t3 S9 Y+ L! z- c  U1 d
to do-trade
' F' R! Q$ B; Y: X;;
这个过程实际上是给双方作出评价的过程7 J! ]5 [* ^% [* P% ^- R' B$ v7 ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 U* B( s" c- Q0 f( J0 R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 x0 O% ^5 e7 R7 V  J
set trade-record-current lput(timer) trade-record-current( A: F' K' p; a, X- q# G+ Q
;;
评价时间; g) C- b9 o. m5 \9 Z  o7 \9 }
ask myself [
( m. ^( s( h: n0 P/ s# A( A# W% kupdate-local-reputation) B- {9 ^) Z& k3 U3 b9 n. v
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 @" O* K3 t' U, Y( {4 f]) T( f; Y! j" P; M" F2 S2 K
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 g% O5 J  k" f% t; |;;
将此次交易的记录加入到trade-record-one1 H4 D6 x' P- I3 \  L) t# P% ]! V
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 S7 s$ B& D$ W4 k2 j+ K- B0 zlet note (item 2 trade-record-current )
; j# v5 W: }- r' Z( _- X- tset trade-record-current5 d0 w" z& N' b8 L+ F; s- ~* v
(replace-item 2 trade-record-current (item 3 trade-record-current))

2 V3 X1 A' G; ~, \% J6 r+ j5 ]9 Aset trade-record-current2 T1 R5 E7 p4 Y) \2 D
(replace-item 3 trade-record-current note): E0 N4 F6 d6 N1 g' T
- D7 p* u. ^* Z2 v
$ _0 z, `1 C3 o% Z! t
ask customer [2 \! o) r0 J6 y* _+ \
update-local-reputation4 J, M. @. r1 M1 W
set trade-record-current
' i: U- w3 M# u+ _3 D$ Z8 d& g. Y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" w9 i* b8 U4 N9 J; x4 [; n
]
- {6 W0 L' T7 s8 E( p
8 j. W7 m3 w6 B' m0 a% {
6 ~2 |; V8 {$ Z' X# N
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- _' D$ |3 N0 J1 l& j; f

- }' G* @9 i5 w4 i8 zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 u1 l8 X3 \0 M! p% S;;
将此次交易的记录加入到customertrade-record-all" o- n$ ^5 N6 k' R9 Y/ l
end  [* n# x1 \9 ^1 W0 O  r2 z
1 B8 ~( m' \5 D
to update-local-reputation7 H( l' C: a# V9 [5 A2 G
set [trade-record-one-len] of myself length [trade-record-one] of myself# T; }+ s- a: V' J- o! h
; P8 `, }1 o' }: @' ~" w. g( _

* U( F, V2 e5 q. ?;;if [trade-record-one-len] of myself > 3
0 j8 \& t6 o8 g2 i( B
update-neighbor-total7 l9 {) F2 L7 [! V) g' G
;;
更新邻居节点的数目,在此进行6 G/ u( @( q' Z8 F. T) s
let i 31 M" ?+ G$ G# j, t
let sum-time 0# h7 r; L7 ?# s0 L& T. S
while[i < [trade-record-one-len] of myself]2 ~' }1 x+ e. W" c& {/ N" }* ?$ j3 W
[
0 @2 ^5 n7 \1 y$ G$ T% c0 Lset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" ~2 g8 z) E' D7 x
set i
, _% B( g5 g5 R. h6 }5 p1 x) a- v( i + 1)
; N2 U2 ^1 a0 _
]5 K- J3 L$ S6 \; K" Q7 H& q  q; r
let j 37 J" q0 A* t% q, n
let sum-money 0/ N3 W) D1 T& d; |
while[j < [trade-record-one-len] of myself]
  e: [) m% g6 ]( F+ g  f4 a1 D/ o[
4 k. I* L2 X, B- }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): W' a4 S* w5 n* v7 e' ~
set j
8 f8 {6 G& i1 f8 s+ t: t( j + 1)

- E! w1 W$ g; l/ U]
$ x; \3 R3 [4 |/ Vlet k 3; n( d2 M: ]5 h
let power 0
2 ?* H: l) r# U; ]3 ilet local 0
- o$ [. J& D$ c9 u* awhile [k <[trade-record-one-len] of myself]8 J. D( V1 `* x9 o) p( h: K. n
[* d$ x' f6 P% o( N" ]
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) / T6 ^, P4 A& e6 _4 C/ `# D* z: F
set k (k + 1)2 H9 V0 K' B9 Y
]
3 r% J$ B, W4 @1 bset [local-reputation] of myself (local)
# A1 V5 S' R9 A  i- j2 rend& ]1 z& G- \1 z; T0 `

$ I" t8 R6 r6 c, c: B6 Hto update-neighbor-total5 H  T' L5 a# i9 {
0 _0 E' M4 T. E0 N
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 g1 I8 S! W: q8 X/ g

$ Z6 w" ^, `# l
+ z. _( y% ~$ m2 ~* z2 ?, A6 p
end7 t2 a* f" }  Y4 R3 I! }8 q7 f: Y+ p2 H
/ b2 a# m# U6 ]
to update-credibility-ijl
) N6 b: _7 q5 j2 r# B* K( G8 [
1 _% j* c* h- j) l: |0 I# K% K# n;;
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。
4 I; c4 G! ]$ p- f- Mlet l 0
, U% g5 n! t* G5 C3 Awhile[ l < people ]9 `2 \% D' \9 W, Q* ~! `
;;
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3 s2 u( k% @- `( i0 e4 H- H# ~) E
[4 l4 i; c* e7 |. o: M
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)& W" l& C% _' m. {! R$ v* `  U
if (trade-record-one-j-l-len > 3)& z2 X" C* d6 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
) q, B3 _* ^, A" b# K- A6 Ulet i 3! Q3 z$ p  f" W
let sum-time 0
% F- [4 u& N$ r# D4 vwhile[i < trade-record-one-len]& E+ p- Z1 N& K, {
[
/ D; q# |. l8 y4 Q) E1 p  e! s8 ~set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 l* u3 q, _1 n; g' z5 P# @
set i
$ u' b0 }( l$ y& n( i + 1)

* h$ B% j0 O) d$ ?7 G) S9 s]
! R9 K+ q. @* @. ylet credibility-i-j-l 02 n/ j6 B1 w! u, z
;;i
评价(jjl的评价)9 u0 x0 g5 Z: y
let j 34 ~  ^/ G1 V; n5 |$ [0 _) k; c
let k 4/ ~/ g' P5 v: Z% k; j" C8 y
while[j < trade-record-one-len]; Y( i& w* y1 c7 d; R
[4 [( E' n" b8 b1 g5 G- C3 r
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
( |8 b0 O" [( d8 ?* ~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)
. k) w8 t# D- V" `set j/ V  {, N  z* F
( j + 1)
( b# j4 u, q' S; Z
]3 ^6 w$ W% `& [
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 ))
7 q, E  m6 ]' t7 o7 x0 m* y3 }5 V& _. C$ N# E$ [+ e
2 E: r, ]& E& ?" ^3 c% L* T6 g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 e0 n2 t/ c8 I- D;;
及时更新il的评价质量的评价! J7 K. l2 x/ D) ]! n  F! t
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 \' }# n. ^) n! L* Xset l (l + 1)
: Z6 B. r) r# l4 V  t]
1 z4 w& T# R3 T* A7 K. r$ A- s0 ]0 F5 pend
: p% s8 E- h" m% G# }9 \8 p* m( R& Y2 F
to update-credibility-list0 V: H  L. O! m
let i 0/ V; G$ N, x* v2 R1 L
while[i < people]
' u! Q1 m0 p% A; P( V1 |* n[
. ]+ U5 w! |+ X2 h$ C2 j2 jlet j 0
( [8 `' G: p1 b8 Wlet note 0
5 [, t$ ?6 p1 v* x/ _let k 0( `4 S; d) h- z" n; I
;;
计作出过评价的邻居节点的数目9 D1 O& Y0 F1 d
while[j < people]2 n7 u3 ?4 m# g( L
[
& k4 z( @& \, F7 |* Gif (item j( [credibility] of turtle (i + 1)) != -1)9 [4 P- @% L! R* v& l- y
;;
判断是否给本turtle的评价质量做出过评价的节点9 J5 f: c" O8 P6 L8 Z6 I
[set note (note + item j ([credibility]of turtle (i + 1)))( x" k. z5 A6 {( s* N$ w
;;*(exp (-(people - 2)))/(people - 2))]
! J" G5 l# }9 t; h7 X2 S: R( K
set k (k + 1)
* y, U3 d! E' @; K3 a) C]* U: m; c& _, i1 r1 ]/ f% W9 `/ T
set j (j + 1)
1 j% j! c6 F* H]
% g+ W$ H6 _! fset note (note *(exp (- (1 / k)))/ k)
8 c* \* F$ Q+ M. Wset credibility-list (replace-item i credibility-list note)
9 ?! m$ H, y; lset i (i + 1)8 r  \+ r: k4 e* Z' H; F
]! |5 ^6 l4 q% x" c; K9 Z  N
end5 ~  D; |6 I& P/ b' L6 Q+ ^

: o" C' {, ^1 ^& tto update-global-reputation-list
( V! v! j0 v, d# Q) Q. d$ ]8 B: dlet j 0% K. f9 d. P0 [- J+ r& C" u& A
while[j < people]: J; u3 Z  M6 Z8 y$ H4 d0 T% V
[
+ D1 m% M- `' x3 g4 tlet new 0
1 o4 t& x; @4 Z;;
暂存新的一个全局声誉* |! T( r3 A) o3 @" a
let i 0
5 b* x2 g1 c4 M1 ?3 Rlet sum-money 0( x, _: N- |' t0 c6 s; g) Z1 p9 Q( P* `" m
let credibility-money 07 i5 z! p6 z; p3 t; P
while [i < people]
: T6 }7 E- g' W' a& V0 J[
5 `0 ~2 f4 {4 Dset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 c) t# K) ~  ]; F9 oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, `9 P) I1 z2 C( k4 d( Jset i (i + 1). }" P2 g5 w3 j. O) s
]
# i9 N5 X2 Q5 _$ g- \! Y5 Zlet k 0
+ [" m" Q2 ?$ M, X$ ^  Qlet new1 0
0 P- m/ v) q$ U6 u; r, Gwhile [k < people]$ P' G5 F, g  f. [7 I" ^
[
: M- W4 w7 f. m3 h# F$ b& _  Mset 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)
$ h5 M3 P% j; Z# V" C. Hset k (k + 1)  g7 X" |; J) k4 w# x% U% m
]- f2 Q' {7 i- F  s
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : j" c2 `  H4 t1 k+ m! ~1 ?% Q
set global-reputation-list (replace-item j global-reputation-list new)
- b/ t& |, J$ ?/ ^6 H- lset j (j + 1)
5 y- E4 S8 e2 _]+ R, R4 u2 r  ^3 F2 \, l: c
end+ V# @- y* J. ?/ U4 h/ w
2 [0 }3 F2 f/ g. C8 x3 a

) z! U7 D, Q! J  p# x- a5 r6 B' @+ R# l/ h% b
to get-color5 w8 f, O8 f0 \

6 t/ U( a, N8 D+ W2 t3 R6 o! g  lset color blue

* \+ g8 I( c8 \/ Vend* s, n4 R+ F& E% h
+ d) n5 |* c' y! V9 Y" k- d
to poll-class
; A" g: ?% O1 e4 ?* Q$ dend
6 j- c0 x& Q! L7 H2 L; G! a3 P( d- ]0 s
to setup-plot1
* z. M0 w7 W* L8 ]: o  P8 J
0 m7 o3 p0 h0 xset-current-plot "Trends-of-Local-reputation"

! l7 t" O3 I. @
, s: U$ u" R; Iset-plot-x-range 0 xmax
, b0 n( q4 |6 U% c; o0 ^; q

7 l8 U3 H( I' X" ?* Yset-plot-y-range 0.0 ymax

9 S6 A0 p! ?' B5 S( Qend
3 y* I3 ]  Q" C4 N- h
& W6 m+ k% O9 I( M) d5 Zto setup-plot2
& A3 L- u! A2 C# Y% k% u
: r3 u0 k! R% y2 I, b0 xset-current-plot "Trends-of-global-reputation"
6 Q& r/ j$ \6 d
/ d7 s3 D3 Z! y7 B" i
set-plot-x-range 0 xmax

% R% U3 o! W/ Q+ B5 Q+ g5 r# i- P$ c- n4 ~; W' O$ r2 x( d
set-plot-y-range 0.0 ymax
; ^* G: j% j8 b" M7 G4 ^7 ^) O1 Y
end0 ~' ]! S8 `8 R
% p0 y2 h' O5 I. b  @
to setup-plot3
8 ]' y$ n8 W9 \; x  [  D- E& c7 [/ `* S0 e8 f
set-current-plot "Trends-of-credibility"

9 W: e6 d& w. y
5 y) V8 G+ I# z4 H- X/ Tset-plot-x-range 0 xmax
; B3 A, P# K; u7 E

, W% p8 b1 ?  D# zset-plot-y-range 0.0 ymax

0 ?  n6 N: A. N  x8 p" D! g, D0 R* ~end
/ j+ c2 F2 W2 i. M! D9 f7 b: I- I/ _4 h
to do-plots+ ]( p  ~! j" y$ F0 s; _
set-current-plot "Trends-of-Local-reputation"8 w# z  b  p8 ~* m# L& f! @
set-current-plot-pen "Honest service"$ ^( d0 b6 I3 U# a- ~/ Y  Q
end
' b1 Y( [5 r+ e$ @/ c
5 U/ h1 H- J# ^3 Z9 y: Q% 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.3 `5 ?. F. W* [! W

( j' e- d% ~  S: S, n. w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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