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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:
# s! v2 @! E& j! [3 Qto do-business
8 f: D0 W3 S8 {4 a" J, q rt random 360
  M. t# H, K, v5 O2 E3 k4 _ fd 1
: r$ ~1 F5 a3 ^7 ^ ifelse(other turtles-here != nobody)[
  Y; e- H- i8 {' j1 V# G   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.
- H2 x6 [1 ?% W! f) |  L   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 G5 J' m: Y( ^5 z+ W   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 l0 n6 `  y  P& L3 w5 {* ^   set [trade-record-one-len] of self length [trade-record-one] of self
$ S3 |; h- B, R0 _& e- I   set trade-record-current( list (timer) (random money-upper-limit))
- }8 j9 @7 ?! }5 V9 z" L6 u: j. P
问题的提示如下:
" q/ D2 i. L+ i* |- m# }' o; Y' O- [( Z
error while turtle 50 running OF in procedure DO-BUSINESS
! H0 K- m5 ~. N* ^  called by procedure GO
7 K. e4 J" c0 @. e  OOF expected input to be a turtle agentset or turtle but got NOBODY instead.' E& j) Y. ]. D3 }' z# v8 C% d
(halted running of go)
4 I& ^( X6 s+ r6 f) x8 C- x9 q+ F" }* [
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~, G% H5 [0 Y  l3 a. Z
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) A- S% K. i" _0 m( F
globals[
- B7 w" c- o# @1 Vxmax5 E2 p6 y' P7 E4 E, B' |8 t0 U' ^
ymax& h% g0 ?4 h. N1 Z" A4 M
global-reputation-list
) Q( F3 j4 m9 G# s& y5 `) ?
6 g7 B1 F$ l4 f( n8 T, e" S;;
每一个turtle的全局声誉都存在此LIST0 K" ~' b" _; j5 y* s! H
credibility-list
1 a- j) O) L! I. n( l. S. f4 |;;
每一个turtle的评价可信度
7 E# T9 K2 ~4 T$ H+ O% X9 o9 chonest-service
* B- X) P5 J  \: M: J$ f9 i- w# lunhonest-service  E3 t8 ^3 k  W
oscillation
( A, e! O  [1 {rand-dynamic
  l- r; N/ D7 T, F0 U]4 ^8 ?: u" \. p" |* ^$ n

" x, U" u& ?/ W2 X* wturtles-own[# A: t4 p8 g7 ^: v
trade-record-all: ?! C5 R( O& P" T! \
;;a list of lists,
trade-record-one组成
( |/ o3 k8 r2 L9 N( a& N! `trade-record-one6 I$ U/ {3 f8 ~) F( L' k
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
% Z9 W6 ?' e, a0 r5 U
9 o/ ]  |' H# ?* _' v0 l& I;;[
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]]* f  C5 h; e: \0 K0 d+ j9 ?* B
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]
6 V$ e' p/ V/ V% r  a1 l  Rcredibility-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
* W7 T$ X5 m! M' Rneighbor-total
( }) S) ]' P% g9 A* @. c" {;;
记录该turtle的邻居节点的数目2 i1 @9 u$ D  S/ N+ h
trade-time
9 ]3 `& U9 O/ ~. U' ]4 N;;
当前发生交易的turtle的交易时间
4 {9 p4 M% d: C0 pappraise-give( X8 Q2 x0 F* C& L1 [
;;
当前发生交易时给出的评价
& i$ n: c7 \8 i" F% G! E  Q/ Qappraise-receive
, u& u3 g1 u: {4 J7 g0 b6 B0 d;;
当前发生交易时收到的评价
  J/ ?0 I* c' j* Aappraise-time, V/ c3 Q9 \! p! ?9 r5 f4 z
;;
当前发生交易时的评价时间. {3 B! l  K( }% a
local-reputation-now;;此次交易后相对于对方turtle的局部声誉( w4 D* ]0 U( ^/ B8 f0 r1 }
trade-times-total" \; G. f* m5 z2 R3 }( V; }7 N& e
;;
与当前turtle的交易总次数1 \1 v" z  _; d2 `6 r, t2 E
trade-money-total1 [8 `& a6 X2 B3 p1 G
;;
与当前turtle的交易总金额* L# U  [6 c& B% Z/ d1 I& S
local-reputation
; a7 [( ~* j8 V  y# h+ O% xglobal-reputation) x& Z! N' q2 q; y" f( w
credibility
: n9 j8 E' l3 c" ^' Y' ?' l4 D;;
评价可信度,每次交易后都需要更新
! O( R8 r9 G( g( m, x6 qcredibility-all
% H; m8 G/ W$ }5 {, H# c;;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1 B0 r* e% B* E: A
! `) J' Z1 ]; ^2 f% i
;;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+ i3 A* t& i, Z. ^
credibility-one
4 W, ?$ ?" {8 m. S8 H& D7 L% n# C, D9 D;;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
; T. g& P7 h$ }* y& k- c+ w* ]global-proportion( L% L4 z0 T- ?+ g! I. Y2 \, \2 I% V
customer
3 J, _3 R& I0 c) Vcustomer-no
" I: C3 C$ `; |1 ^/ Otrust-ok
: m  J, W! d8 v( ptrade-record-one-len;;trade-record-one的长度$ d. f6 j# H  g  T
]
  I' u- ]6 ^  |" a6 Q. [% @
6 a+ i; v1 y* n;;setup procedure
# j) ]3 M4 y+ f/ U& c  T: l3 ~& {1 j2 v; G/ k7 k" ], K
to setup
- i7 p' M7 y- F% i. ]) f3 u' ?2 d) d% N) s9 y
ca

0 K8 W8 u: d  T, H4 Y
: ], r; l4 t' R9 [initialize-settings
7 t- X  O. R; N- s1 Y; T

; u$ F9 ~+ X: m: Fcrt people [setup-turtles]

+ v* G" F' n9 [* x9 D) y
3 Y/ X8 J' k/ J+ X8 Preset-timer

/ o0 ?! V6 d% d7 D9 v& W' X. q+ \8 R& t. Y$ a
poll-class

- _- Y, c8 a9 ?" @+ _) G+ X* S' }
% s4 J: I; I' J6 Ssetup-plots

* i/ ]$ U! ~4 P/ c. B: Q
& b; d! Z8 y" h) Bdo-plots

  h% O* I4 g: ]end
  R2 M$ g: u, i/ q6 s0 {
. J: f6 i2 }) fto initialize-settings- E- e9 m, u8 g2 I
$ m; r, A% C) y# ]4 b, L; J
set global-reputation-list []

, V; Y9 x2 F# u8 l# x1 F9 k! t* k+ y* V
set credibility-list n-values people [0.5]

) X1 Q  V5 P, ]4 `4 F1 v, W# L2 B& b+ ~) r+ {9 R2 k
set honest-service 0
  O4 C" f# R1 [! }) T

0 W% j4 X2 K: eset unhonest-service 0
' B% P" u- U9 G! o8 B2 t$ v. w6 D
; b/ e$ K) t# K
set oscillation 0

* l& P! N4 X( j+ G! |2 p& j3 ?( ]" e5 ^9 e8 ~! e9 V
set rand-dynamic 0
2 Z3 N  \/ b% U
end
6 T# ?1 j8 u8 K# V8 U$ V5 u8 L4 N# y( B, k/ a& H9 V; B9 x7 @  v  x
to setup-turtles % b: N" X4 o; E& W7 O
set shape "person"' \! [2 u2 }& f0 o; F9 W
setxy random-xcor random-ycor2 i( M; }9 x9 i* V8 x
set trade-record-one []
; c/ z' _- Q4 i% r

5 Z  b2 B; E' @% [& n0 X8 pset trade-record-all n-values people [(list (? + 1) 0 0)] 1 s/ W: O* K! g! }) x8 P+ f& ]
, k) b1 Q+ Q9 z+ [& }  V$ n% ^; X& e
set trade-record-current []& z! A- l: q3 Q9 Z; E9 y1 L" G
set credibility-receive []' S9 A' d& q7 w! H4 Y5 n# y6 s
set local-reputation 0.5
' _/ ~* I; a- c6 k& Rset neighbor-total 0. `0 I+ a) q8 M- e' F( b. t" T
set trade-times-total 0
; `' n; [$ e5 Z: m! a# dset trade-money-total 0! a4 N' V, G5 T. ?$ ~
set customer nobody6 @: \6 y* z" ?' F
set credibility-all n-values people [creat-credibility]
3 Y' l$ M) j+ L6 C+ I) d, u$ yset credibility n-values people [-1]: [( `6 ?# K% `
get-color1 ]  c: N& V5 @% e/ c; |
9 p, A. x% B) |8 H0 p
end3 w8 I" ^4 t: o3 ^  W& O
0 x7 X; ]% ]9 X
to-report creat-credibility
0 Q9 K& E! G  e$ R9 S& w" M% Zreport n-values people [0.5]
8 K" |. j, ^3 S) y7 B, |- ~3 f( vend; Z3 N5 a/ s, J9 R! e$ S
5 }- Y* o' [  L2 I4 f; |
to setup-plots
. q& h& [( G) {+ P; R0 ]
3 I2 y8 ~' W  x3 R4 U; G8 V9 @set xmax 30

. R! O% [  a4 u* s
6 W! A" F; L# y8 g2 ]set ymax 1.0
2 @1 [; T& u" T3 {. z( W7 l

# k$ u% O# _, x$ @. K/ Y" @$ bclear-all-plots

! [# r) q) S. Z& c2 N0 {, |+ y
) [( V% {) F- I+ Qsetup-plot1

, E& r8 n. S, R# B& [" b8 i9 @1 }& W. o7 x
3 b6 Z  X6 ?* t$ `setup-plot2

/ N4 m; _$ v9 N* r/ @9 O' f, ~) s! O& x8 e( M& d0 h! I
setup-plot3

$ {- r, {7 ~3 [6 [; T0 R3 f+ ^/ yend
  x# Y" `4 W; D9 a  |9 U& V' J+ a
: z5 z. c, u+ c, d: L- L9 O;;run time procedures
8 ]7 l8 `" C. R2 a7 C% H( G% G( s4 w/ ?' T
to go
: Z3 C0 k& X* z
8 w& c  S  f4 {/ j3 a$ cask turtles [do-business]

6 s3 e6 c& r0 N. uend
( S& N  }  u* b4 Z. u
2 R" k- S9 \+ h/ F& _to do-business
2 f: y% u5 o5 X+ d0 l0 ^# N# H
. ?: u3 ]5 ]0 k9 x
8 ]/ Y7 {1 h+ c  X; v, }
rt random 360

1 P- [4 g5 T; X( L& x2 I& w, i. y8 H( w$ o& E  h9 h
fd 1

& l# l  O6 P( F+ ?& U9 G" h- B, @: |5 a/ G
ifelse(other turtles-here != nobody)[

0 v1 C6 e0 m0 f- I0 M$ _+ R- i/ }0 |8 X4 D) n
set customer one-of other turtles-here
: J7 c0 N4 t" A! e6 \1 \
  i8 p2 K2 q$ ~
;; set [customer] of customer myself

' u' \6 t' j3 `. Z
. h* J3 U  }% x8 e! [; I6 ]( uset [trade-record-one] of self item (([who] of customer) - 1)
; X5 p5 n# N5 m+ j; I* @0 A% t[trade-record-all]of self
4 q& Z: e% t9 y8 s5 Z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; M7 M1 U8 N" ?4 P1 W
: E- |7 @) N7 V8 X+ q! Hset [trade-record-one] of customer item (([who] of self) - 1)
" d# m$ S7 W* ~% M7 |( C[trade-record-all]of customer
$ |) n/ Y/ E& O; ]6 X5 D

8 k. `& `6 a3 ~- P1 Yset [trade-record-one-len] of self length [trade-record-one] of self

' V; `% @0 I. V- [. V6 s
3 `+ T! d# l8 ?, E7 Zset trade-record-current( list (timer) (random money-upper-limit))

0 P/ s' `2 ?3 e0 n3 m" L: c
3 h. _+ ^9 Y, Kask self [do-trust]! l, o8 [( g% Y7 Y* H! I. `
;;
先求ij的信任度0 e) S1 p4 W% x9 D5 y8 u0 j" {- p

5 J- d) s7 m+ d, X6 g3 pif ([trust-ok] of self)
# Q+ n: s2 X; P3 k; [- a+ c) c;;
根据ij的信任度来决定是否与j进行交易[
. ~! R5 H% r1 V8 Z4 w, y% Z0 E8 nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: c. w8 ^3 D  s: t7 r. D4 i7 j0 w! Z+ u0 e4 B3 G7 R" B, j2 T
[
. U8 x' b" M0 x+ T
( u5 b9 F- Q/ M' H3 C, V1 a9 }2 K' s
do-trade
% ]& l/ U1 k9 K6 O% a! \  q4 y
5 n$ o& |2 o+ |
update-credibility-ijl

7 l/ @# ?. k- V* Y+ G! e
  P% [' i. {0 Y, u3 s6 Gupdate-credibility-list% `* C% B2 D4 h) |
1 u6 V1 p2 }. v+ C1 }" _: [
- o& I, O8 d4 @: J7 d0 q
update-global-reputation-list

& t8 b/ J1 h4 p/ C( L' D/ |, S- E  d: t! @. N1 O6 _
poll-class

$ y2 s# W% w# v/ W: n! S) |* x% I3 J- k& H2 |- y; }) ]- w6 o% Y
get-color
/ N7 y- i+ d0 ]$ B
( n* f" ]' @1 o$ G; S
]]
# A* J" U1 j' a4 ~* x
+ ^  k& V- Z4 n3 {;;
如果所得的信任度满足条件,则进行交易( @$ O. v8 y$ _5 f5 V5 C% R& Z+ F

( o2 P, L1 `$ r1 [2 g4 s* R[
* A# }5 `. c- y$ [  C
9 X( n7 B! ~6 P6 T- F1 E
rt random 360
4 v* @; t6 a0 |3 _) P" ~
+ n- d4 x: ?5 W1 `8 T
fd 1

0 H: u0 z& r1 P
" g) x2 t8 p' A]

+ T5 e- q, }- Y3 @. n- i+ n: H
& q  }8 C$ G3 M7 _3 e# k# iend

' P) |$ \; Q+ g3 ^* x9 S
& R& R8 G& Y9 |/ F, L* r* Nto do-trust
, f+ k& v+ ]( H0 bset trust-ok False! E/ P. b3 Z* V

2 `0 R* ~( _, ?' ~( \" o; o

4 a8 y9 O- I' Zlet max-trade-times 0
' {; O  k( }, fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 [2 i! G/ f5 C% l- `; o
let max-trade-money 04 P7 t, l# \! C! A8 h& i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! W$ {0 f6 {# y9 ~
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# D5 F0 U" h# u2 H! i8 p( Q% g

+ f% L% p/ ]7 h0 _' B

# K0 s4 D" G$ V8 O& g, lget-global-proportion
( C' l& V& g6 J* dlet trust-value
1 {- f% s% ?- g, S) }6 Hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
) ^; r: y/ d; V' ~1 t8 A0 p
if(trust-value > trade-trust-value)
4 e2 S; W- b0 u# O4 V1 [[set trust-ok true]
: L5 X( u: ?4 S8 I" w+ Aend& f' w, J4 A8 I

/ ?- U6 n* ^+ f  `& U2 U( K* L1 Kto get-global-proportion
5 g! z1 D% W. _/ P9 t& i; Eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 [, Y$ w# s+ j3 p[set global-proportion 0]% l2 V/ V% N$ K$ J' a1 s
[let i 0+ D  l8 ]  L9 W* o6 C5 b
let sum-money 0
6 q4 s+ s8 j8 R- v# S" i8 O8 mwhile[ i < people]
+ \# a  o- ?1 ~  C9 }( R+ Y( d  I[
7 ?3 E7 m* ^6 x. h/ w5 e/ zif( length (item i
7 `7 J% `8 w7 l; |5 x! V" v' B[trade-record-all] of customer) > 3 )

* O1 s3 R+ ~6 C* |[
- ?* V; K! M" v& oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 i# D7 R: G6 T* e]
8 y: d' F& O6 U/ Q/ a2 l% g]
, X3 d5 P8 T+ [( T1 T1 ~let j 02 K  y/ X5 Y' m, h" @, I
let note 00 c0 c2 Y3 X% h8 a% Z% g' h: ~
while[ j < people]
5 R8 u$ d) x; ~3 l  s[
# E+ y- g6 E1 `+ K' y2 Y" Tif( length (item i4 J1 Z# y! }# `+ v0 N  ^
[trade-record-all] of customer) > 3 )

$ z% |) J' q( z" e0 }) z$ f2 g[6 \: |! E1 v1 ?/ N0 R# e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: z- S) x2 E3 x' U1 ]- m! R[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 Y7 d6 @" B9 e, z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ ]5 Y( N) y  y# G) u) D* \+ ?! O
]
8 v' _9 b# k" z% H/ L]& _1 x9 t- L) ?9 \% F8 [3 w
set global-proportion note' ]8 \7 Z  m/ @% Q/ w8 \5 K
]
2 t+ I( U1 y6 K' o, Eend
9 C  O' c( e% a& Y) C
8 Y- X8 _' f/ R6 n' X5 L3 Nto do-trade
4 u2 j5 m: p  j; X2 v1 q# l' d;;
这个过程实际上是给双方作出评价的过程' ?$ Y% e# e. B, V. R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 p. Z4 t% ~/ i. I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 h1 c8 V+ A3 P* R# j6 l
set trade-record-current lput(timer) trade-record-current8 [! D, Y( `% \
;;
评价时间9 F* [* B4 n2 L! X4 y- J
ask myself [
7 g: M+ P" Y- S- Y2 X) i  A1 Kupdate-local-reputation
: }  x6 Y" }4 X/ vset trade-record-current lput([local-reputation] of myself) trade-record-current
, R7 c! P$ g/ C0 d]# u" c" M/ k" @  q+ s1 t4 O
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' M7 T2 U' |- j9 {' N;;
将此次交易的记录加入到trade-record-one, [, F0 A) f. U1 P" D' @
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
, j, D0 w4 e+ Ulet note (item 2 trade-record-current )' y, d' i2 q1 h" J$ f
set trade-record-current
( z9 J. U& {+ @& y(replace-item 2 trade-record-current (item 3 trade-record-current))
- c( E* f3 c9 \* f% f
set trade-record-current
3 M4 c! o! n' e8 ]0 w% N+ C(replace-item 3 trade-record-current note)) k9 f: D" c% z
; v5 v- I" y" b

  p7 c. D7 B. h$ aask customer [8 d' V1 i3 T# `' q" O2 ~
update-local-reputation
2 c$ @3 R0 }( u1 m- eset trade-record-current
- o5 M3 V0 a4 a$ }6 [(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: P( |; h$ V- c
]
8 H1 s0 I+ c4 e/ |4 ~
) x. d. [: L! q, t& G6 T
& s8 L" i) k' x; P4 R) e% P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% c6 W  c" K0 t% H) L
. X( `( k( G' I0 |
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- D1 m8 g9 n  t/ b
;;
将此次交易的记录加入到customertrade-record-all
9 E9 F$ a' @# }' xend" I( k$ q% x$ {
& n& a" y; F9 c, u% F+ D
to update-local-reputation
) M$ v7 k$ @9 Gset [trade-record-one-len] of myself length [trade-record-one] of myself
# Z7 o  p5 ]0 b. x% f
9 A: e3 @! W( ?1 s2 R4 N4 Z& _# |6 t- l+ ?- S# W
;;if [trade-record-one-len] of myself > 3

' k- L- m" s6 wupdate-neighbor-total2 b1 |! ?( ]  _+ z0 b/ l3 T
;;
更新邻居节点的数目,在此进行; d, x7 y& h' h' x: Y3 p# X
let i 33 U8 l5 B# c9 c, Y
let sum-time 0
& y# [! Q! z% B5 \7 Cwhile[i < [trade-record-one-len] of myself]$ s8 l0 U* P% h& b6 Y; G* r
[+ H6 y& v- ^9 L/ }0 Z8 u" v5 E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 Z% a/ N# i% s+ v  j! O7 vset i
- l  \# A; I5 Z8 y2 d6 {% p( i + 1)
8 n' J" T1 _( ]- N+ e0 w9 s$ ]' [- n
]) L% H$ _& K. }  d' a
let j 3
$ J0 W5 y8 r$ Elet sum-money 0
( k6 r+ o1 g& C1 V7 J- g0 vwhile[j < [trade-record-one-len] of myself]" c; A7 f2 C" c8 \8 H
[
: M+ m3 z) v" k1 {4 tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)1 A) W8 O  n/ ]- S
set j
* ^& i* S. t$ [" r" O+ e; d( j + 1)

5 F( m' K0 ^7 _9 c' b& x) ?]$ N) e/ `" I. \: D% C4 N, A) E4 e
let k 3% S5 K) F( R+ j- p- h; C
let power 0, t" U/ h2 g# A. v( N
let local 0% ?+ O" ?7 A: A  E$ g
while [k <[trade-record-one-len] of myself]5 l3 C6 n0 ~+ |7 N5 h! P
[! Z+ r' e& }) e3 ]; l0 Z
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) $ `" V' R) d: b8 e. n4 V7 Q, T- S) t
set k (k + 1)
! s, H4 A$ o* T, P- o8 g$ I]3 N- B+ J& U! d/ {2 o/ W5 C* I
set [local-reputation] of myself (local)
; X8 F4 N5 s+ N8 U7 Hend
  p( c+ r+ V( I! H  L2 M9 o
' a: J% N3 }0 k9 M) c, p2 q' T9 hto update-neighbor-total. J4 H3 \5 `+ ], E9 }4 G3 \

/ z2 Y( b* `' C# f$ r# P7 Z/ Q- _# ^if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ w: ?* y" R, @+ \& H! F4 w0 N
- r" A/ S, {+ ]+ d
& R6 x( L3 i9 p  v3 H' `
end
6 o. T: v. H" d( y2 `0 A! }1 i% I9 o& ?
to update-credibility-ijl * B/ ]" H. |6 o2 F# o' `

/ X7 G1 S3 q3 f1 R;;
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。9 o( r" s3 v8 n  ?9 {- o1 @" e
let l 0
% r! Q- ~, D1 ewhile[ l < people ]+ a$ I) [. k! Y/ l! V! ~" V
;;
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
% M, i5 [' w6 B- u/ S[
. r4 o% n: w! [' Y5 Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# d8 }/ S1 T& a! Mif (trade-record-one-j-l-len > 3)9 s& W8 w: W" _/ x# @2 D
[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
' g8 I* V. D5 h& t4 b0 ]2 [, `let i 3
/ V0 G) W# Z9 f) N6 A& Ilet sum-time 0
2 R2 S, S4 L7 F( ~5 |9 C: |: M8 }while[i < trade-record-one-len]
5 A. U$ I' o" r[
7 z% U/ I; j2 }2 ]2 p+ Y4 H7 Fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ C4 ^& m* H* S' ~9 ]" }
set i/ i8 B7 W5 g( f# f7 L% X9 \( o
( i + 1)
, L3 [; R% @8 w' b% k
]
* \- I- P( n) ylet credibility-i-j-l 0
3 ]3 B% j9 F. t7 e;;i
评价(jjl的评价)4 S7 B0 Y! Y( O0 \
let j 36 X6 v2 @& R0 A, Q0 u& L( n
let k 42 O7 c8 P0 D+ w; B3 v# L  B
while[j < trade-record-one-len]
4 g/ e. \0 R. L; v- H. c( ~" \[
# _/ z# Z  E  V# r2 {7 _' S1 fwhile [((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 P- q' z: x) f: I' j. Y* j* z
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)
# s  s! o% M" V% D- kset j' O* k8 u  ^/ V: D! s9 N* q; D- h: ?
( j + 1)
* _( Q7 o  I3 p) I: v
]; s  }) {: A( }& P2 n1 i
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 ))( h6 `: z* u0 g2 j* F" g. x

* g% H6 x$ y* c+ P/ }# |- o

% E9 {( U2 |) Y( R" V- Qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
" d/ h% u* a( `- R# V5 q1 c) {( ]  U;;
及时更新il的评价质量的评价4 x0 C4 ^$ m7 c8 w; d
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ ?$ x! y5 ?/ c+ dset l (l + 1)& Q% Y- F* H- q! B8 x
]
$ F3 x, {/ {7 s6 k. q! zend
# z. C: Z7 X* _0 X* C+ T1 {) Q: w* A' m8 D' w8 W
to update-credibility-list
& q9 r4 X" Y+ ilet i 0
. ^- M$ x) l- gwhile[i < people]
% M9 A, U3 \7 T) h[
3 L; A+ t* T% O% R1 q2 @* o# k: ylet j 0$ y9 g* b/ ~/ |" f+ A2 A) ]- m; U
let note 0; P: u+ o9 Y* U- W! O
let k 0+ b9 ~- ~! ]5 L4 }$ ]% s; }: P
;;
计作出过评价的邻居节点的数目  `& m+ h4 @5 f- ^. I' \
while[j < people]
1 a+ I: R' N5 C* {2 b; B[
' i8 g# g3 E7 P, \' U* Yif (item j( [credibility] of turtle (i + 1)) != -1)5 Z+ R- N, w3 [1 q
;;
判断是否给本turtle的评价质量做出过评价的节点: R) [! Y& J0 v
[set note (note + item j ([credibility]of turtle (i + 1)))
/ ^6 c, u, ^6 X+ k' e8 {! g;;*(exp (-(people - 2)))/(people - 2))]
& X( t* o$ F' ^# P, U# O4 W
set k (k + 1)" d" J& D: D& D0 U9 f' }4 M( E' _
]
' o6 q% W  h& b7 |1 j5 v9 ^$ Tset j (j + 1)( ?. D4 X, Y# t  k2 v+ w
]
! g2 x7 F9 f$ zset note (note *(exp (- (1 / k)))/ k). F5 i6 @% p" e+ O0 H
set credibility-list (replace-item i credibility-list note)
/ [4 ]* i: I% Y# z2 e0 V; Nset i (i + 1)
) ], F& ~0 S: R; r! H" ~]
4 q/ r0 q3 L1 Q2 b' Vend
+ V/ z% z, D1 w' z  s
/ P/ b: k6 d) w/ N6 |( Eto update-global-reputation-list
8 L" {6 S8 a) T9 H/ Vlet j 0
- ~6 z( @+ c1 d5 Q7 Qwhile[j < people]
* T+ p! c8 Q. I) w[4 D# n! ], [' _
let new 0
" `- l% C; G6 H: \; P  M& n* x' V;;
暂存新的一个全局声誉
8 k5 E; t+ o/ X$ d" t  elet i 00 B2 U2 e0 W9 G- W0 g! W: C5 K
let sum-money 0* x! v& W/ O8 ~, O
let credibility-money 0. [! u7 r" T/ S% a$ {: _: {! W# m- Y
while [i < people]2 ]8 Q4 c: C. k6 C1 n! @
[1 J2 ?4 v1 W" ~8 {
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& Q% b+ L5 W6 s6 C3 Q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); q( T" [1 U3 F* D- B  c1 w: n; S8 @, t
set i (i + 1)
: |, Y# I3 x6 O4 L! O]
6 a" W7 \# |9 O0 Qlet k 0
( ?/ `% \' I' }3 a/ P7 E& R6 clet new1 0
1 y$ L$ W' V5 Z+ F! H4 V5 {while [k < people]! J9 M8 F2 i5 x, U; |
[
8 e# k" d; f' B6 n1 Fset 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)
1 |( Z& p' h1 lset k (k + 1)
6 k! \9 g( [  }& U7 F]
% C  K" n  ~- D' Gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 i$ i0 n3 x0 l! O) v' }set global-reputation-list (replace-item j global-reputation-list new)3 T8 w' e1 I+ l9 k! B
set j (j + 1)' W0 W: J) J# _4 j  M: A
]
  W" h1 e& K. A: Yend
* @7 m& C  j. G
0 `6 k: G9 `0 v" t
& N3 p( z6 d- F+ B9 Q; v9 [' Y% t  J7 |5 o
to get-color3 }) j" T6 e0 f6 w! Z8 x4 A) v
% n7 c. \! S. p% S- N. p
set color blue
" d2 y. ]/ O$ S% \
end
! i$ H2 k$ ?3 [* F* x0 F4 x; e. E5 {# V( [6 M7 L3 F  M4 I
to poll-class8 B% I2 ?' f& C" d% r
end
) Y/ A- V+ q8 y3 M" l/ H; _5 {% s- W  S5 O; }" t/ U* v2 I+ {+ H
to setup-plot1( O9 _' |* t* W9 N3 p
. I7 q  }1 r* D1 A
set-current-plot "Trends-of-Local-reputation"
+ j; O( e* P6 q. @

/ j' R: B/ M: ^- X  a' bset-plot-x-range 0 xmax
& u1 |+ B/ T( Q) H" Y, t1 t

+ O' l' j3 G) d1 M/ d5 f) y! H5 mset-plot-y-range 0.0 ymax

" _$ N6 K, x+ V5 ^1 Qend
6 h( l* C& [$ x2 Z  b
* @; G. M7 F: B3 D2 Eto setup-plot29 g( D! G: r; M# }

$ s9 a9 p" x6 jset-current-plot "Trends-of-global-reputation"
; }! Z5 M! l5 q; q3 x/ I9 a
/ H6 _. s3 w8 q2 @
set-plot-x-range 0 xmax
- e) B: I4 ^8 o3 X0 u
% w1 v9 l9 k' F7 _* @# I3 q
set-plot-y-range 0.0 ymax

% L* \! |: D" d1 W6 Gend
/ ?2 t( D+ X( t  g
' }5 R) U6 }" ?2 jto setup-plot3
  M7 Z0 h: E* D' \( \  Q) M2 e% `3 F6 M4 _3 ~
set-current-plot "Trends-of-credibility"

5 G5 h1 ~* z$ {: _! o3 |9 a- y$ {
6 I( n( x7 L9 r7 |( _set-plot-x-range 0 xmax

- S/ m& }- t6 {& J9 i, Z7 F5 b! n
9 v# t4 D/ g1 W3 u7 q- a8 y- ?# vset-plot-y-range 0.0 ymax

& [" h0 Z5 Y, x- `, [, T, p7 send& b6 s2 `% G3 v- y
  E9 y  P0 |7 Z
to do-plots
' F! X1 W8 f- ]8 N# iset-current-plot "Trends-of-Local-reputation") P6 D' T  c9 y" u# a1 C* ~( ?. d4 H
set-current-plot-pen "Honest service"1 n, Q7 o9 L$ I
end2 V; H& B! W5 C  x: i

( I+ J% i6 \- 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.% u0 g" Z7 a6 @2 N. Y* i
# t" C- D. y+ N) P9 d: 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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