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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:4 q/ [) S" F1 A0 O; {( B
to do-business - l3 y! N4 |* P8 [5 X3 k) P
rt random 360% f, g' f3 a9 {- G4 A! T7 O/ ]
fd 1+ M  ]; X1 o: q/ K% A; q( |" x, f. u
ifelse(other turtles-here != nobody)[
1 @1 I% C  }, Q5 Z3 y   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.
0 g* _7 w( [& F$ x" k, J8 @   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 e8 \) s7 Y- v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; {  ?/ S- y( z- [/ }2 u% e
   set [trade-record-one-len] of self length [trade-record-one] of self7 J8 n& T; Y! \5 `$ f
   set trade-record-current( list (timer) (random money-upper-limit))
: @+ c6 B9 m- n0 ?* ]/ I3 |3 d. C: q. T% y7 S- D/ k, [7 a
问题的提示如下:4 t* M9 v% ~/ Q# t5 {- t& Q# C% ~! i+ G) M
- c( _  U3 g$ x5 R& E9 F" r
error while turtle 50 running OF in procedure DO-BUSINESS
% b! d$ C' N$ p4 E; v; B; p+ e  t  called by procedure GO
9 _$ s/ U% ^; F+ }; @: T+ K' BOF expected input to be a turtle agentset or turtle but got NOBODY instead.7 G9 F. M# o2 ]7 `# Y
(halted running of go)
: f+ R5 G7 }7 W: P: ?3 h2 N
. ^- f9 E! O& M3 {. ^4 [- M4 }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~~
4 J' [+ W/ v3 g4 J# n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4 ~2 S9 a: B. }7 u9 F
globals[6 A; c3 e% ^8 Q- l8 Q! A
xmax7 [8 K8 H! K7 s( P
ymax6 l1 A* _! o, X6 u$ |$ c
global-reputation-list
/ n- Q6 d, i0 V& `6 G8 t( L& x8 ~" s- Q8 w9 w, ?9 b9 r
;;
每一个turtle的全局声誉都存在此LIST9 B) v2 g# ~# U3 c1 p( o0 f
credibility-list
' a" l4 E; d$ ]/ ?;;
每一个turtle的评价可信度4 ]! G0 T" n& L1 m* k7 d6 T8 @
honest-service# p7 a" A# g; P9 d1 h" H
unhonest-service
+ f2 c% b& `9 d' I5 a- J6 roscillation
$ a2 \( c1 b* E- ]  L5 Lrand-dynamic
1 o# e* i5 X6 o0 t- ~9 B8 U4 _) z]+ Y. X( D( F0 P6 m& {2 p( Y6 \

% h& c, I+ D7 t/ Uturtles-own[
- {+ v- W3 B* }7 k6 i! ~, Ctrade-record-all; k5 _& e) W/ X, z2 ?
;;a list of lists,
trade-record-one组成  ^" B7 G: X% M9 H
trade-record-one, S/ u% n1 M  J8 W
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
% N# h, P  x2 s
5 p* p& `1 R6 ]& {;;[
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]]: g9 M9 m6 V" z- ]) S
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 x4 x6 ?9 O8 J5 q6 r/ W% ?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
* {! g5 \# ]( ^neighbor-total
& h) O3 Q1 z( v( J! o;;
记录该turtle的邻居节点的数目" R+ ^% M( K! {5 K' t* R  H, X! K, k# s
trade-time
# \8 |7 K. }5 y- z* b! T+ a: \# X;;
当前发生交易的turtle的交易时间0 _! M4 o% R' t& U% P
appraise-give! s* O5 Y! l4 d6 _- V
;;
当前发生交易时给出的评价& a7 P% V6 ]1 r& O' f
appraise-receive/ T2 ^( X+ _( X6 w1 V6 Y+ Q
;;
当前发生交易时收到的评价- y7 ~6 d) M/ \6 D
appraise-time
; s' l! f7 W9 _( M" \: ?( [# N;;
当前发生交易时的评价时间  T) |/ H8 S% r0 o
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* s- w! C6 g/ b5 b  ?- Ktrade-times-total2 ~) L& S* p& H# X! ~
;;
与当前turtle的交易总次数
/ l/ C) N8 J- S' a1 z& ttrade-money-total0 W0 V0 ^/ b: w2 v8 g, n
;;
与当前turtle的交易总金额
7 ~* V; q# k* U% A& jlocal-reputation
2 ^( Y/ l. K) k8 H$ C. r$ D0 cglobal-reputation5 X7 v9 r0 }- X% |1 E! p- g2 V
credibility
+ {) j2 y0 B) _' A5 x* z. }: u4 t  f% P;;
评价可信度,每次交易后都需要更新
+ ?5 i4 U$ h8 l# z' f, |5 F! W  p& Zcredibility-all
4 ?& `% Y! O: T$ P;;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  E7 q$ L' X* y/ d; g6 S
! @5 [3 V6 m3 r1 p7 s9 F
;;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; _! Z9 `. A1 |3 i& c# {1 @
credibility-one: F& f4 {! ~4 d. E6 \- ~
;;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
" C. ?. J: M( V0 w5 h4 `global-proportion
( t2 w4 T* v1 Y& rcustomer. B1 n5 x: E! a  z2 ?
customer-no
- U" W& m8 n" ]- j8 x% ^4 P" o6 K0 U2 Vtrust-ok
7 k7 N8 ^( ~% V6 }) k9 Ntrade-record-one-len;;trade-record-one的长度) ?5 ~, A4 W* A( v
]3 i8 l8 n7 w& m
* \6 G2 [  H) j- ?
;;setup procedure
5 ~- n- O( z1 o0 ^2 C. V! w% E/ I% w* V
to setup
  v% a7 F6 o* e
' j# S& e8 j: |2 fca
1 f2 q$ A. b' Z( w
/ ~) c6 r4 G; d. p7 [! H' ~5 n5 O/ t
initialize-settings

- L6 h) J+ ~3 `
; I& S' u( q1 ccrt people [setup-turtles]
% s2 d) M4 u/ Q1 c% f

+ g! i4 z( G- m# R$ breset-timer

- Z5 q+ y, E4 P- _5 D
- ?6 J: B" z9 L8 c' e- jpoll-class

1 Q5 U1 C, f$ B5 A' [; R9 |4 `- F* n" X6 `5 b% T
setup-plots

+ ?6 ^" A- H7 k6 ]3 L% i- F, f) D" M5 b$ u( m7 o+ T2 t
do-plots
" e  k: z+ s' s: J5 E
end
" l) H8 M: n2 _+ `- w4 _0 T& S' k
& G3 R' j" e1 q# k  O( N( w6 E) Tto initialize-settings
- h- u1 k2 X( Y4 L" g, M. e6 ]: I/ E3 ^1 g: u$ p) F& U
set global-reputation-list []

- ~2 W+ l+ N$ f
( U& G- Z8 |9 G; C7 z5 y/ Aset credibility-list n-values people [0.5]
4 g6 L5 L* B0 F: c

0 u$ C+ k8 a  d. Eset honest-service 0

7 z% F' m( }: D7 Y4 f% C7 `' s0 C
( |4 p' K9 P4 {2 f9 }# E) ]set unhonest-service 0
0 x8 T; m( L& k% D  n6 u/ r

2 G5 B1 s/ q6 }& }8 s" Mset oscillation 0

7 [. m, M: x0 O7 W) _4 Q) c( l) q
( X* ~' h8 w4 Vset rand-dynamic 0
- d: i1 B7 v( r- T
end' c* G* `! P! l2 C% t1 ?' t

7 w7 i. S1 V  m/ |' xto setup-turtles ) v7 i% B) v% A2 S1 T
set shape "person"
) b# X$ ?" e3 j  _setxy random-xcor random-ycor0 {- ^$ ~# D1 e( D- C) H! ^! x7 p
set trade-record-one []
! G* X: P7 w1 m  S1 m! Y. M
! _% `8 F' G! Z2 ?
set trade-record-all n-values people [(list (? + 1) 0 0)] $ q7 F& }/ Q/ ~+ g* L* ]. S: j& j2 _- n
$ b1 ~7 u+ t7 m1 b. x. m; j6 I4 t
set trade-record-current []
4 S# t* M$ A% ^; S% q0 N$ Z( \set credibility-receive []
& Y" ]7 d% L* y, Mset local-reputation 0.5$ m* H5 x- i3 E( g
set neighbor-total 0" U" ?- v7 l: N7 M% T/ L
set trade-times-total 0
% y1 h# {: }$ ~2 N9 |! iset trade-money-total 0- I0 g0 l# V" o2 v3 G; n$ J
set customer nobody6 Q* Q% h7 o2 ]! w4 F
set credibility-all n-values people [creat-credibility]
4 M/ i: \6 k- c  R6 U9 Iset credibility n-values people [-1]
4 A, w% n0 b4 T! r* nget-color( e' E; @: ^1 @2 o% r: P, O4 `& v
! J$ _( q- o; s
end% B# ^! o9 A% i. p; @

6 A$ b$ X; Q) l  i$ {# K* f5 vto-report creat-credibility6 O  R; x' y; Y
report n-values people [0.5]1 u; G9 w6 N4 x
end2 d7 F% r2 W, m9 W$ E; w; b

, |( d9 b( s- nto setup-plots
9 O0 ]/ `+ ^5 p
. T! r9 H; H6 R$ h' jset xmax 30

0 I% ]# N6 W. E9 ^+ r* h) a+ y, ~+ q8 l# Y; p. \% @
set ymax 1.0

% P8 i+ L8 `+ d. v0 r1 ~+ ^7 l! J1 F. [0 V9 G5 D7 h
clear-all-plots
5 j2 |& [- \! I" _, M

! R2 r* D- s- J- d. }5 `setup-plot1
! x7 s  s# ?4 ]3 ~( K; [( ~

  ^; G0 ~# r4 O3 k9 Esetup-plot2

& X( x* |0 z. Y! ^( w6 D$ O; n$ f4 O" K7 h' `, R3 l
setup-plot3

0 ^$ N& v; h) `: i- yend5 H- y6 d; ^, g) D; x* w7 `% Q

( ^  G# i4 \5 e! n* A" j;;run time procedures
9 r2 P1 ^5 }" K; |# {$ ?8 {7 H. [. Y
to go
2 Y' ^1 v$ G% m0 h' ^* n0 p- ~9 @& c7 Z, V2 h
ask turtles [do-business]
2 K8 T6 a4 C2 U/ H% s& D# ]3 R. j; y
end4 O- i6 y: D3 B" d; T3 i/ n& U

( Y5 E  Z2 n/ @* ]to do-business
5 D+ T: B$ l2 x

$ c" h% U2 o; \* j! H
" m8 G2 `$ n4 G6 Y$ _rt random 360

- C$ Y3 \& k/ j( b5 L6 f; f
' v7 v: [! W% f' R. R0 zfd 1

- E* R" X; N- S) L0 j: G
* @. j- l5 J$ p: l7 E% x" aifelse(other turtles-here != nobody)[
9 W: t" o# I3 |6 |2 r

) k6 m. P) o5 A, sset customer one-of other turtles-here

. j  Z1 C& I$ W* ]" z1 G) T6 g( S# i/ a5 l, O
;; set [customer] of customer myself

. D- M# ^0 I2 w, j$ y5 [( O0 M# d2 d# y: N% R
set [trade-record-one] of self item (([who] of customer) - 1)  Q; P2 R; [5 R$ b1 {" h" H  B, P% C
[trade-record-all]of self9 v4 E2 r9 T+ W# ?
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  ], W! n) x+ b. b/ B% u0 l' R7 j9 n; ^
set [trade-record-one] of customer item (([who] of self) - 1)
5 K/ ~8 o/ ^( m4 `[trade-record-all]of customer
7 j4 l9 S3 O- U# J+ W/ _# `

- v$ S/ `+ J! h8 u- S& Eset [trade-record-one-len] of self length [trade-record-one] of self

+ x2 ^6 M* ]" G: |2 g. I! w% V" \  t/ a
set trade-record-current( list (timer) (random money-upper-limit))

# t( w4 N9 H( g2 C: j8 O$ D5 Q2 _
; d9 X4 k' P" ?3 eask self [do-trust]
0 i% O/ t: `7 t, L;;
先求ij的信任度
# R4 N+ E/ z, y) N
- n5 M5 d, C2 k1 r  s$ ]' Fif ([trust-ok] of self)
' n3 X" k. Q0 \9 u  C7 L' z;;
根据ij的信任度来决定是否与j进行交易[
) N: A' K* R/ j0 g" F: ?# p! N; b3 uask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! a$ k! _7 h& r# S' J9 ^# M
' K+ [" M( S$ H+ n" y
[
# \( |. E$ H  u0 z4 N

, m: n: _+ U( r) B7 m4 A7 a: X" s; wdo-trade
" e( f; E& d& ]) r! V

/ l! L1 K7 n/ o/ z: cupdate-credibility-ijl

9 g, t# X1 L$ ^1 ]5 J4 C! b% `. L6 u* u) R. a! D- ]- S
update-credibility-list5 r4 x4 h* J) p' x* h: @

2 Q# l! b/ w7 ?% }5 x/ P3 i3 v' i! k: E" g# q
update-global-reputation-list
$ m! b, L' [, J5 y

2 I% v$ b4 i, z0 D6 t! Z" y; A9 kpoll-class
) b' [, J) }4 m- {# M9 G% m
: s( P( E" B/ b! U6 N7 m! r
get-color

7 }. u, I* w1 u- n7 C
3 c% C+ c" J& h) }# Y7 d) n]]
  ]$ l: k# \/ {0 o
" F: V, g. a) X- F;;
如果所得的信任度满足条件,则进行交易
* e' L' m" B4 Y  u) g2 y0 Z/ X
  u' g; c" t1 V9 C6 w4 V[

* p% @) P  u! ?* ?& A! o+ C3 i( P, f. u! W2 N
rt random 360

5 B/ _+ y) m5 [4 @. O
2 A) G5 \- i# i- h6 p7 x* R5 ~2 x% @fd 1
7 }8 U4 q% ~: c2 X

6 q( U0 g+ h4 j2 X]

7 A) P3 u) T2 Y8 J; k) U; Y5 ^3 `, p7 q
end

7 G$ ~2 _3 ~/ ~( I+ O, Z. Y) t# o8 e" x+ @& i
to do-trust 1 n% f" h1 F* r1 f* E
set trust-ok False4 Z, ^8 R9 `% F9 R! w! S+ E' c+ H
% |9 t1 d! J8 Y) O" t
, S9 |' u( Y; P" v
let max-trade-times 0# ~5 w4 J0 N" j- m5 i$ o( P
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* p" U/ E. {) z: x8 Slet max-trade-money 0
& H7 X5 M4 u5 `foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# X1 N' B2 e  I4 n+ _
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 e, h1 j0 F; E1 r0 j3 a
1 Y( l. i0 O( D: {7 ]6 c
8 o$ x' W/ [, V9 I( L1 H
get-global-proportion0 A9 ~. C& t0 Y) [' N' e
let trust-value
6 i- D! n0 e  \; d. alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
7 _, c$ i) m% z* x! V8 Z
if(trust-value > trade-trust-value)
5 Y% t& F2 h  c1 J) k[set trust-ok true]
- s3 G0 v# K; k4 N8 _9 i! \end# k2 {: K0 K1 t- Y$ }
  [2 ~9 \% l, h
to get-global-proportion; S9 U* Y- S( g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 q. A9 h2 X) r5 L" z( |/ u[set global-proportion 0]
  {$ _3 u1 O7 u- |/ x  K0 R[let i 0/ ^4 J" ~# X4 ?1 c  g. {0 T3 L
let sum-money 0! \4 V0 F* C3 U! C0 l/ I6 Y
while[ i < people]
/ k8 h3 p8 ~/ h# A: J+ ~" {[! N4 r' d3 j/ T% h% c1 S, g
if( length (item i1 \1 Q5 n) \, x) p& u. {; I# N
[trade-record-all] of customer) > 3 )
$ @% J7 }5 e6 J7 A: Z8 b/ ~1 Z5 ?6 x1 t
[
  r1 R1 [+ C7 l2 M& w. V: xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- p# E" a+ v3 k9 z) s  `' M]5 r+ U& K4 ]" Q4 e
]2 D9 u0 r/ e0 n# {7 Q, ?
let j 0
6 ~6 e* o3 Z) S. @" g  r& N5 g4 H/ Klet note 0
" O4 W9 Q9 ~# {$ J  L3 _while[ j < people]- e. D' S) b7 W, o
[
0 o& ?$ L; T9 n' v( a# t! A  f4 wif( length (item i* U, F5 j* z& }, H/ `# t% f
[trade-record-all] of customer) > 3 )
- J5 _4 \$ B! R  l3 d5 X7 a
[
& M5 _6 q6 R$ E$ P, L# u; R- t4 aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% C) o  I1 t; }- a1 C- t- j
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( Z$ {; X3 @$ G: S- s2 r( L[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ E, l1 d- ?. E- l4 K# F. L]
2 \! f5 z( S, `3 H4 |]/ S$ N. @% B: o& @" ~3 M7 H
set global-proportion note; w, K/ Y" K- r1 A. {) ?  c3 Y' _$ Z
]7 t( t% E% b/ H! c0 d  J
end+ M8 B4 A1 A0 g
& C1 F9 @1 C% Y# e9 U/ |$ ~4 G) H( M
to do-trade3 i9 i# D# K  e
;;
这个过程实际上是给双方作出评价的过程! d! t2 [% W8 z$ R3 i, P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& k9 Z  V" Z. U0 M' L8 p6 H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  @/ z7 L) c0 y: ]
set trade-record-current lput(timer) trade-record-current  Z; S: h& e3 ^$ P  f$ R3 z" @
;;
评价时间
0 w+ z3 g  m6 c7 A6 T$ iask myself [
6 G( n9 k1 x, hupdate-local-reputation
5 \; Z1 s5 L6 \; w" Iset trade-record-current lput([local-reputation] of myself) trade-record-current
% [/ Q# U) o7 E]! e. R3 k3 k+ L3 P0 ?/ B# P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  r! U6 J7 ^- {& T+ A0 C  Y+ U
;;
将此次交易的记录加入到trade-record-one' D: N3 {* ?% w/ [- A
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- }6 a. N" D# p3 _& Olet note (item 2 trade-record-current )( F# U6 z5 @! a& _
set trade-record-current4 k& a, R( J# j* M
(replace-item 2 trade-record-current (item 3 trade-record-current))
  N& r1 m* _9 C2 ~6 o, f. f
set trade-record-current
4 D0 r6 S+ {4 d/ G4 @8 b* {9 i(replace-item 3 trade-record-current note)
, o2 E6 V; g3 l( _# e: L
7 @5 i" |) Z1 H+ C

& R' ?3 S$ F/ f+ Y5 h9 h4 xask customer [
$ Z0 N# m9 w$ H3 zupdate-local-reputation
7 h/ T7 k8 t- P0 E( P" }' y+ nset trade-record-current
  v1 G2 @4 w% }# o6 R5 K$ }(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 y- L2 U* h# ]" q/ W- L]
; r& D% v6 j+ R  |
, _$ b7 p/ V2 H$ Q

; I; U6 b9 \6 Hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# f1 ^2 g* ?0 N+ V2 @1 T8 e
" ^" |% {. M/ e  m" B2 {
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 |" @3 ~  N: h6 o5 ?- Q/ a- S4 E
;;
将此次交易的记录加入到customertrade-record-all
2 N9 {6 ]" E; b' }0 [end
( K1 e# R5 c3 E, u% e: c& t  p/ C4 G; V/ G# F2 o- E
to update-local-reputation4 M) A) t4 @; B1 L% T: O1 b# V
set [trade-record-one-len] of myself length [trade-record-one] of myself
0 N, U7 a, Y9 {; H& x/ A6 `, a; k* _
. }) i, W8 m4 q
( V. \  a' ?5 x% R;;if [trade-record-one-len] of myself > 3

& E8 U7 F4 _5 T0 z& j- P# S+ tupdate-neighbor-total
% R( P0 @' f# p! t2 H;;
更新邻居节点的数目,在此进行$ W2 E; t( a. k3 c. _/ e
let i 3
* f2 |$ E) Y$ ?6 ?let sum-time 0
( z" a8 h1 R+ P6 iwhile[i < [trade-record-one-len] of myself]* o# y% I1 v3 o8 }' [% t6 B9 V; H
[6 d  r0 O5 Q% p. k) f
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* I, T$ j6 C$ F5 {% t! A
set i
5 P- B$ V4 z) D! O: J% H- I( i + 1)

- ?8 X' H( g( r$ |& w]
, X. q6 H2 m% W9 ?) @9 J8 hlet j 3+ U8 l7 }: R; Q5 T
let sum-money 0
" k6 }' T) d9 C- l: y3 J7 e2 [while[j < [trade-record-one-len] of myself]; |, P/ C  ]! y( O& g" _
[1 I0 U( h2 Y1 B- Z! v
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)
* m4 E- H0 I4 m1 `* e9 Vset j% _' N) j  O1 f! `/ X8 Z0 H
( j + 1)
6 g, b$ l( [9 j; }4 k
]
& I$ w. P5 i" J6 {- ^let k 3
. z* H& ~8 p8 V7 q4 O/ ~+ Elet power 0
6 ^' e" S4 T$ `* N* P# _let local 0+ _! Y, z1 Y0 ~
while [k <[trade-record-one-len] of myself]
# S% i# B# r$ j8 s; ]6 j[
# D, a  I! ~8 z6 E3 A+ i* Aset 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)
; _/ L9 C1 b6 e2 K: e" U& n; }set k (k + 1)* P- w9 S' ~, L3 {$ d0 h- T
]- c" F+ C9 X, d4 O! H" L
set [local-reputation] of myself (local)& y& A, _6 ?" s* L$ ~( Z& V
end
" m. U5 a( _8 `0 }8 s; c
" O) [& Y  x( S% Jto update-neighbor-total
& e8 B, H* D; F% A2 h6 \
; H* Q  S+ {  K3 Qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ d: p$ b; C1 v$ O) t

+ v) u; [4 P! u% {0 U
7 E/ J  u; `& f$ e/ D4 w
end
5 @( X: Y) F* b, J. O
1 R" |7 P' J' L, b$ b* o/ W1 Mto update-credibility-ijl
# o9 I( E& n% Y2 U# I6 K, I
* `9 j# z9 @( h9 };;
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。
' w1 a, r0 p4 o+ \let l 0
2 S& P- o. ?# w7 h, p6 n5 M( ]while[ l < people ]
* }, e) L, Z$ k$ L1 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
: n( l0 l/ ?! F2 G[: F% w4 R* ^$ h$ b* u) `
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' f; Q" _% {& l. w+ \/ i' P! L4 a
if (trade-record-one-j-l-len > 3)
, {; ^/ b8 W  ~2 h[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
; a. I) O' _- M0 X! m0 L1 G+ U/ X" Dlet i 3
) Z8 o! [! ]4 M* N8 X0 zlet sum-time 0
* W( y# B, }- twhile[i < trade-record-one-len]
% Q9 A. Z4 U8 _6 ][, g% T1 y$ B# o! C2 b
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& c6 `1 V1 t+ A1 d! i& k
set i
' ]; U5 F+ H" \* k7 M( ?( i + 1)
3 v$ f) b7 \5 W
]
- {& T# Y5 w3 f7 R7 _  Qlet credibility-i-j-l 0
8 N  V& P* A# i7 x;;i
评价(jjl的评价)
) a  @' v' @0 p  {8 \0 Tlet j 33 q  w: X. z6 o* l
let k 4: k. J9 R+ M9 K& G& V) @4 `; m/ P
while[j < trade-record-one-len]0 n# R# x5 R% W) t/ j! A
[
% b9 |1 \- ^. D. O& q) I$ Owhile [((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
' j2 H9 {: z7 N4 V; S) 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)
# x( P8 W$ @3 S( Qset j
  v% Y8 Y0 _+ ]5 w( j + 1)

8 T: E- S4 _8 H7 ]3 f. t* G8 |]
, q6 l0 m9 W. R+ |: ^$ Wset [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 ))
' \' L. \* V  o, G. {" w+ U
  ~( W* C- C, d- `* W

- C+ M' Q) U% d3 t1 \) @! Flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, }) h! f6 Y! R4 M) @;;
及时更新il的评价质量的评价! m# H2 |3 z( X5 P4 C9 D* L
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( @. ]6 a* o+ sset l (l + 1)" W% p# G+ h( t% ~
]
& f$ O! b- E" _end
- o  v) K0 V- ]8 y  L
4 f; m: Y7 ?8 V' Mto update-credibility-list) p" D/ ~) U+ ~5 @( Y1 o5 O# ^
let i 0
- l9 ]' r5 b+ g" t0 Y% ywhile[i < people]
# J% L, |$ l3 s: T9 k, V[) B  K: k6 Y( k! c' n
let j 05 G! k( U8 ]8 o1 Q+ B/ C3 O
let note 06 M: R6 \1 ^; }
let k 03 ^; j3 k5 l* b- d( e2 U
;;
计作出过评价的邻居节点的数目
$ r2 K8 D4 [) gwhile[j < people]) @0 z/ z4 t2 ~' S
[
: E( _  c4 g2 h2 s/ o5 Aif (item j( [credibility] of turtle (i + 1)) != -1)5 I, v8 k3 o' B" u* K: k* ^
;;
判断是否给本turtle的评价质量做出过评价的节点( v* ~) t3 O( }' ?5 \
[set note (note + item j ([credibility]of turtle (i + 1)))
: q0 |7 E8 L/ D/ F: j; z2 n;;*(exp (-(people - 2)))/(people - 2))]
$ w+ Q5 M6 t9 J. U8 g) A" M# q- F5 j
set k (k + 1)' [$ _: _8 y& J$ ]/ U; z. N5 L
]) i' z! V  M- y/ D$ A, O& _
set j (j + 1)
  a( h# ^4 A0 x2 `2 U; h]
) K& s; q3 y* X, P- lset note (note *(exp (- (1 / k)))/ k)) S" ], p- w0 V& s8 o2 h6 n
set credibility-list (replace-item i credibility-list note)( ]0 h$ }9 i, \3 f. V" ?
set i (i + 1)
; h" k% P- p( F7 J# U! u+ r]
4 T$ |1 v# j1 l/ mend8 ^9 j) t) N2 E$ \0 C# X
$ l* ]( G$ Y9 k5 ]: ]
to update-global-reputation-list
* D) [* a- X8 `/ w% S6 Wlet j 0
1 _9 q. O8 _9 Dwhile[j < people]' p+ S! ?$ \$ b; x& W& g& Q7 ]
[+ g8 t4 p* r# j
let new 0' W7 f" K8 _. P) Q: E6 m
;;
暂存新的一个全局声誉
9 ?+ ?$ Z! {/ ?& F' ulet i 0- }! P8 h% ]) z; P
let sum-money 0" Y- }, J6 o* |8 @  R- b( }
let credibility-money 0  s' D% d. _* ~$ t  N2 b
while [i < people]# t7 X- [3 ~2 g
[
2 h9 k5 z+ x2 cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  }2 L! c7 M0 t: Uset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 U; f$ i. }9 g/ D
set i (i + 1)
: P8 M: }" a; H* D1 q]
8 J8 \4 ]5 M  [' o( C' H  q5 ?let k 0
' r  V( @& v5 rlet new1 0! w( h- V& H. B( p! k8 C
while [k < people]; U3 z" B. i( y; z
[# V) O3 |9 [6 _# }
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)5 P3 Z( m9 |% m- \. t
set k (k + 1)# i* P# N- y+ n1 c4 \/ q2 [% U
]
" b& k) V% ^4 v3 l7 L6 b; j& h6 Fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 W) T0 T& P0 {2 ~
set global-reputation-list (replace-item j global-reputation-list new); j; O" q, S* {/ H- f" \+ I. K
set j (j + 1)
+ v" }, g# k2 T. E8 B0 w6 ]/ n]2 M0 ^% ^0 M! \
end
5 H4 U- z4 |5 `% d' |
8 n0 ?' B& n5 m9 X  {( P2 ], L
+ l7 _* l+ b( t& m
- }0 W7 L) C  S! L5 Cto get-color
, b5 M0 t9 [- C9 D% t4 T% M8 d% H# z7 G, c& `2 {8 A
set color blue
+ w% ~4 t6 K; I( Q0 {
end/ L8 B* S' ]2 }) ?9 k

. |! |# C/ {* @5 V" F0 `to poll-class: j$ b% i# l8 I8 \7 V
end
) N* U& K; u; Z& O( d
# P7 c: i/ }, t- R- Dto setup-plot1
! [# C( o* o& {$ Y7 P8 Q$ {: r7 _: {
set-current-plot "Trends-of-Local-reputation"
+ W' T/ E; |7 X. m+ ]4 F

0 D) n3 Q% }( ]set-plot-x-range 0 xmax

. ~" m, R& I, ~5 N1 A' g+ {8 J( z% B1 }: J+ v7 k- m* W
set-plot-y-range 0.0 ymax
0 ]& T: r+ e' r) c. L  l5 U% z
end  d9 [/ c; t6 H0 C5 g% D0 {  I
9 A9 g! N( H1 |  _( q: `
to setup-plot2. v1 c# a3 }- ?( T

$ d/ P% L6 @9 T, n1 Jset-current-plot "Trends-of-global-reputation"
, g- ^9 m6 v; d  r
! F5 N& \! f" }. `! P# D. H$ j7 R
set-plot-x-range 0 xmax

3 T+ L3 r! b' }, g/ S6 ~
1 _; \' t0 X3 w/ |% Y* Gset-plot-y-range 0.0 ymax
0 t3 [2 ^8 X  h1 L" j; l- W9 W
end
$ h; p2 a' y! |% ?) ?
$ \. t0 b- A3 P; H" Y' jto setup-plot3
, }# S1 f% {* T- c7 V( }
9 b5 ?" V& {, ~set-current-plot "Trends-of-credibility"

' o. ~3 @. Q' \! r# U
: @  r& ]- O* T' _4 xset-plot-x-range 0 xmax

* L( d4 g0 M0 Y; O
- O6 T# S4 \+ L7 Y/ ?! F9 Uset-plot-y-range 0.0 ymax

% e& J) W: o+ f7 }end
& c/ W! d8 w  \6 T# ~2 a1 y- U& C: w. w( h4 i
to do-plots& f, s9 \5 ~. B
set-current-plot "Trends-of-Local-reputation"/ C7 c% E7 ?1 B1 F
set-current-plot-pen "Honest service"
0 V3 O2 r# R! aend
$ F( I6 M0 R  |4 n" _6 b8 D
  G1 R6 ]( K. r[ 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.
! Q2 t; j5 k5 v: e! g! X8 Z. L* |/ Z/ N0 Y3 ]+ u6 e8 l8 K5 u
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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