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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:
# M& U6 p6 O. g8 I6 P* }  p. Ito do-business
/ K: y" F. d5 |. `# h& l9 ~ rt random 360
- R) O/ Q$ x0 K/ n4 R, o fd 1) U- o' m5 r' F$ \- V6 k6 }+ O
ifelse(other turtles-here != nobody)[6 L! s5 O, R; a% o8 l# K
   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.8 O8 `; z( r$ l
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ y3 c! V( Q  T1 Z/ R# C
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 Z, T8 M  ]) l3 L, [
   set [trade-record-one-len] of self length [trade-record-one] of self
- q) u8 D; z1 ^. M# z/ Q! D   set trade-record-current( list (timer) (random money-upper-limit))4 z, X. O, ]% G' W1 H7 r0 c: G7 ?1 }
5 Z# @3 p) D* Z
问题的提示如下:
, B, J. V- ~3 X) P( {9 u! V& p' S* v+ G
error while turtle 50 running OF in procedure DO-BUSINESS
6 `: B+ J$ s/ Q9 c7 I8 k  called by procedure GO
6 @. i" H( [$ p$ VOF expected input to be a turtle agentset or turtle but got NOBODY instead.& B9 O6 l$ O7 J
(halted running of go)
3 t& S, ~. K* U9 w+ G4 Z- h  g3 B4 Q2 T9 i% L6 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~~+ _& z3 i7 Z2 `* N: Y0 A
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 _) R; B, H1 g4 H( \globals[: t& E' D8 C. Y  |
xmax- y0 w2 [4 f) ]7 F; o
ymax* @; o0 ^, }  v3 o5 x
global-reputation-list; a0 b: o4 \4 Z; a
5 B8 R9 c9 x9 E* T% k/ W! A
;;
每一个turtle的全局声誉都存在此LIST  Q4 z1 a7 s  F* Q; z* g
credibility-list1 P" d2 J3 S$ Z* ~4 s0 x) L
;;
每一个turtle的评价可信度
% m# g: t) M; Ghonest-service
' z: p; u( g: m7 h0 tunhonest-service: U; I7 U+ Q+ C% n
oscillation
5 k% k' R  V! S* z7 xrand-dynamic8 a; p# b+ ]% h* i7 P: c1 R
]
( b% G$ Y  M, T3 X
; D$ A! b: I9 D" pturtles-own[
+ O! E9 K; W- J5 I$ ptrade-record-all9 ^8 F: t8 ^! S
;;a list of lists,
trade-record-one组成9 z& K/ q- R! u. b
trade-record-one* d5 b2 n0 a5 M: d, n; u
;;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 a* O% w; S2 D, N6 Y. N
2 L  [$ m8 w% w' \6 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]]" _9 g) a5 M4 Z8 W
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 i% z+ B! O" p2 u( k; U- w) R4 Ycredibility-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: p2 m: f9 l# B. I
neighbor-total6 g: o3 @9 [8 p9 I( z# x1 X! a
;;
记录该turtle的邻居节点的数目
5 ^  d4 D) ~7 o' y6 ztrade-time
* l" l/ X+ T4 Z/ {6 T  Z8 y0 o;;
当前发生交易的turtle的交易时间& _# b5 k5 k. |6 ?* G
appraise-give5 P. _# Y* J  G% z
;;
当前发生交易时给出的评价/ a7 G; U! H$ Y: ?
appraise-receive
% K; h+ U& M5 E- u;;
当前发生交易时收到的评价9 |( s$ ^/ N6 n7 U
appraise-time* h" P  e. k- N; y( ]5 }
;;
当前发生交易时的评价时间
) T) P) A( m4 g' }local-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ w* ^" L3 L( k6 ^trade-times-total
' R' {; Z" ^. B8 T;;
与当前turtle的交易总次数2 y5 N2 X& k  j9 s' e  N& r
trade-money-total
+ I9 h6 d& D% k5 y+ V% S;;
与当前turtle的交易总金额6 T' Q6 e( l0 Z5 [3 D2 w
local-reputation
7 |6 D6 U0 {: {) |$ `% ]- }7 Bglobal-reputation
4 y9 [4 z( z' d' L; Hcredibility
) A. o7 y  A' {2 w' [" z8 m  |;;
评价可信度,每次交易后都需要更新
+ p" |8 L' {. T9 C2 P/ Icredibility-all+ y+ x! j0 g- a3 T8 r# F
;;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 a# C: ]# z) F8 _$ D) S) U! P5 b2 u3 G; 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* R- O% j% e7 a. J3 S$ I  b, b
credibility-one: X7 N$ n( O+ k9 O8 P; _4 K1 e
;;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people0 v  [  }3 b9 F& y; n, R0 b, e! R  ?
global-proportion
  W" k) p2 B& Acustomer, U) @' d) U3 Q; r1 J$ ~
customer-no( s8 g# o- o, h+ f( l
trust-ok& U+ r" R/ w- @4 a
trade-record-one-len;;trade-record-one的长度
, d  Q: S  I1 E9 q0 s) \]
7 p5 r; E* F$ |3 H
/ i, H9 G9 R/ a0 L9 F/ |;;setup procedure
  X# Q3 D- V8 ]
: b, A/ e4 ^' G  q* r3 {to setup# U* O. u, q2 Q; j; b! h2 J
5 t2 a4 P& Z  J# S. Y6 _( S9 b: p+ f
ca
) y! c1 |2 t3 s3 ^# s8 U2 O4 l! O

; t% W& {+ b) m+ @3 T- x& j) M: L( @initialize-settings
( y0 _: g; W0 z( W& B

6 l# |/ B- ~7 y0 _9 }3 G4 f" ]# T+ qcrt people [setup-turtles]
! n8 \5 s8 t! q  N

% r" g) c3 K4 w6 w( I  `, Mreset-timer
  ?. b# @, f) E

) q+ k0 U5 s! K2 bpoll-class
0 u; Y5 f  O7 j
- m' _0 [6 m5 p" c. K0 C1 b0 E8 A
setup-plots

! @! u: o4 w) ?# c8 m) h8 p4 m% Q8 o7 V8 y. \. s
do-plots
0 e3 R4 D5 X: }& p9 b8 O
end
3 B/ l. |/ s- Z' ^; j) }
5 I6 L5 j) h+ Jto initialize-settings1 S& I4 d8 F6 x6 ?) O
4 w! X* G. T) l+ O. Q
set global-reputation-list []
5 P- f  V: @( J  [  G8 q- o% f0 c

/ y0 q. N6 t. f3 wset credibility-list n-values people [0.5]

( k* K0 o/ ?; C( h8 ~7 |* j* s# \: U* l. w# \$ l8 C! x0 n
set honest-service 0

- A1 ]$ A7 ~! S& o. ^; z$ i; \1 z: \$ ?$ C
set unhonest-service 0

$ z. c8 T8 E8 t! J
! }8 q" q) b* fset oscillation 0
  Y% d  k& e) D" u6 z1 q' C

( z8 O% D# Q2 X1 x/ Yset rand-dynamic 0

8 g3 ?) l3 d* e& U1 i+ Iend) i1 \9 r$ L' n$ G- w- I; k, q( `6 r
9 y( L# {* _: Y) D
to setup-turtles
+ h- ]- z" \" d7 b2 `0 c5 S7 o+ D6 L* ~set shape "person"
4 G+ H2 B( e# S* K" |* X" e, B* Esetxy random-xcor random-ycor% S5 G* Y+ a$ J% Y3 L
set trade-record-one []& D. c. c  l4 [

0 S( D- Q" U; S8 Cset trade-record-all n-values people [(list (? + 1) 0 0)]
2 S, H8 b4 a6 W# O

' j; z% F1 H8 L" G8 J+ rset trade-record-current []
  G+ I+ T" X7 x* O# @8 d6 vset credibility-receive []+ ~& j; A- A2 z$ T2 D, i% i
set local-reputation 0.58 h; o# p3 |, o( Q
set neighbor-total 0
, E' r/ I+ T- ^1 ^* F8 P4 f9 Uset trade-times-total 0
9 p$ @9 \8 p! s8 {$ o5 u3 _set trade-money-total 0
# i6 W9 K  j' X# Mset customer nobody
, O+ t- W8 H' `, Y4 j* e$ kset credibility-all n-values people [creat-credibility]
: z! N  I: u* q: C: G3 Z  Gset credibility n-values people [-1]
; D, p  x; t/ G8 {; Bget-color6 }$ Z# j, c. F0 P- h5 H- V1 \
) {7 B* v4 y! R3 w; P/ W
end& u! L; m# B6 [: w% E
6 I* T/ I3 h8 S* X' D+ ?
to-report creat-credibility
0 t9 V  c0 D2 }5 ireport n-values people [0.5]+ i9 A7 d. g' c8 `' R' @- `" ~$ x5 g1 L- T
end
/ Z! D5 C4 |2 J$ y: s) M
( Q9 G; w/ C/ M* k6 B9 Yto setup-plots9 @, h4 ^: a8 ?% ?6 p
/ d6 p- s4 z; A% A/ T4 I8 }5 P7 Q8 f
set xmax 30

5 _# {% n2 H7 u# `- J: q5 z- {! A% q& I. t/ g8 v- j
set ymax 1.0
2 v/ P& B  ?* d) _
% [- ?$ J& A1 g( O' e) u
clear-all-plots
( ?6 M( I7 H" f& I6 T& `0 W0 e) q
7 U/ K! K; c* J0 f" M8 H0 @
setup-plot1
$ T4 p) a6 l5 o  p* k( g6 s) P

/ I! k0 E8 q* ^$ qsetup-plot2

, g  T3 t7 E$ K% Z# H
: z8 V- s! u5 g& S; Zsetup-plot3
) s, Z" n  H  k) m; _" |
end
7 T$ L" M4 D8 o9 c; f4 M5 d7 e* J9 t( C5 ?
;;run time procedures: R% m4 Y* E3 j) \6 S

+ `- i# _3 y5 p* fto go
1 E/ m" k: v5 L" ~8 E; R
" {6 o; F* J  ^! S7 }# S$ e# `; I' Nask turtles [do-business]
9 b, e* U+ ~  ?3 `
end
3 {' }1 Q1 E6 u  ]$ r; R# ~; R( v! f3 c3 \! @+ X" s6 [0 g$ W( h" u
to do-business
4 q  ~+ E! ]: W1 O

' @* r& L6 {4 r4 ?: F5 p
* R* k* _  g) `3 f( }5 p4 f  O# G/ irt random 360
6 J, |: V7 }2 ?
7 m; V1 H# s7 X$ ^) v
fd 1

4 Y" e; c' d- S/ ]4 U! v! H
7 G! a7 J- V1 T: f6 |ifelse(other turtles-here != nobody)[

6 J: Q0 i" q. d: d. _$ ^; l$ S2 z/ |+ i1 |# l( k; m
set customer one-of other turtles-here

* q; {4 h% i; P% Z" Y! I6 Z
, ~2 Q7 N" o* e4 j;; set [customer] of customer myself
- a9 `7 O' d- ]  i

, e: ]3 E) U/ Q( Y5 n, t5 aset [trade-record-one] of self item (([who] of customer) - 1)5 ]" I- U5 N! N- C! r
[trade-record-all]of self
8 [+ q3 W4 ]' l, ^;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( X' i7 n2 y! N0 [+ ?+ A
0 q3 Q) z, T; S& R7 Y
set [trade-record-one] of customer item (([who] of self) - 1)" G3 T: x/ h. u7 Y
[trade-record-all]of customer
& Z6 r9 j( `. V7 _# e

% E. Y) W4 o# l  W! n" [9 N) Oset [trade-record-one-len] of self length [trade-record-one] of self

/ L! S7 Z2 H2 Q% p+ d5 k0 M, W3 i, g
set trade-record-current( list (timer) (random money-upper-limit))
- e  d4 {7 |+ @# z$ l
- |; s$ F* ^0 I* e2 i
ask self [do-trust]/ u2 y$ c& {9 n
;;
先求ij的信任度
3 A# Q! t2 r5 R: \8 i) d. K4 U; t. W) S5 W: {3 Z
if ([trust-ok] of self)6 V2 q# l# L* H% p  Y6 }
;;
根据ij的信任度来决定是否与j进行交易[
/ b  _& Z# }" C  A' w) }ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ ~: v& b# f) Y' ^3 ~" M1 C, ]9 F* r+ t$ [! I' Z5 I
[

# C8 B; j3 U% l* c
4 g1 |! u+ D1 ]+ d5 edo-trade
0 W1 E6 m1 w& s$ l
; u4 o- [! v' o4 O, n
update-credibility-ijl

* v  t; X. G+ v! w" N7 \4 `8 r
3 D0 l6 [' H' v( Vupdate-credibility-list/ b0 r! u: E3 p: _4 o' u6 D* G  ~
3 W. l% n" D) j1 [1 ]
4 N, K8 v* c7 N
update-global-reputation-list
/ t3 b2 T1 u8 @
0 q) A# @1 F* ], ]+ L
poll-class
, n$ S- p. {" r4 ~/ y: {
+ I9 y$ q- i) c6 i' H8 b: Z
get-color
* L; j, ~5 F( x0 V8 E* d3 ~( c9 Z
2 L0 _3 F1 m# j. Q& \
]]
2 B5 N# E' Y, G$ D
3 B( z1 |. u4 t# Z0 ?! p;;
如果所得的信任度满足条件,则进行交易: c4 y, Y5 J" t* h& `) c* i

( h' V) P. A" L* Y- p. X[
1 m# x: K/ y8 \, p6 Q; _8 {
* \1 X6 G! s0 ?/ h! `9 \
rt random 360
8 T* o- D  T8 g: Q. ?5 E

% N% Q4 ^" @' t; `/ Qfd 1

0 m( }/ G9 G8 H& `0 U  u5 b! _% P4 |, Z6 j2 D4 o! l3 j0 Q6 \/ m% R
]
% r" k2 a0 T$ [4 z) n

$ I, V# V& T3 a5 |3 @' ?8 zend
0 }+ i, L$ n& z& ^3 s1 h: K

, p% V' s# N- Y: eto do-trust * F- I7 p8 v6 Z( H( \& V2 U
set trust-ok False
; _' l  F3 Z0 [/ D9 w) U8 p. T! G3 i3 Y( ~0 `4 z. u
3 }, c7 R+ j) m" ?8 K$ |, r- P
let max-trade-times 0
% {; z: A+ g" a" vforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 Z1 g7 z$ A" A* A5 j
let max-trade-money 0' p3 h! M) e% f% s- V8 x6 \/ N+ q* f
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ g  ^2 M0 u; j/ \8 K  [0 s8 Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! ?/ S  y0 I* J0 Y$ `. h+ p0 s

* w9 k: Z- ~+ ^6 M7 \

4 c2 |7 ~) j8 C7 i0 u! Y4 Iget-global-proportion- m! u+ f7 C" _. i! T2 G
let trust-value
  l7 W3 O  p$ t6 {3 `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)

% L6 k# d9 u' V# r$ L5 mif(trust-value > trade-trust-value)
* D- s3 E7 n5 `2 \3 T[set trust-ok true]
$ V" e  A1 r# G# V; Lend
) I) U5 Y: i* N, [# W7 E9 O( i- Z& Y" R9 f
to get-global-proportion
6 ^, v; [& t( I$ T- q$ Jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% \7 t/ J3 ^2 U" A- q# f[set global-proportion 0]: e7 h* v2 D5 E+ _3 w# s/ `
[let i 0
" Y  Q4 K1 p$ n% }' n4 e$ j3 o: {let sum-money 0
( U+ n6 `# K) u. e3 z" Ewhile[ i < people], G- G* l- [" d  q
[
! }/ T% h' \* b- b" Zif( length (item i* u: n5 J0 v& H- ?
[trade-record-all] of customer) > 3 )

& c6 r8 O- N  _5 q/ z9 N* d5 E[! J& e7 L, d0 L* u8 W" r; J
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' }8 M3 m" M2 I# \]
' v4 C3 R8 Z' M/ a]
& G% v7 D8 O9 ^4 A  Z5 Slet j 0
$ v4 x7 F8 Z) V) z( I+ {2 nlet note 0( k9 g, R% D' M/ D+ R: ]! ^8 E3 b/ z
while[ j < people]( v# f# R% |7 ^$ s( o' g
[
, G5 Y6 |7 C$ mif( length (item i
' H; @* u3 ~0 b- g1 u7 F8 n" A[trade-record-all] of customer) > 3 )
4 }. a' S7 H/ R5 o5 z6 r
[
# L3 C( ^& G% S7 ~& k/ e- rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 n5 @% E% A! @/ t; T$ V0 r  ?( V. x
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) D. b3 k2 s$ L8 B$ h9 E[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 i' A3 e( ~2 n& ?  k
]
9 i  H! v& G' ~3 V8 L]- _# g. A! ?4 H0 L" u3 U
set global-proportion note5 [" Z6 f% `# I9 }8 p% U
]
3 t3 K* V1 `9 \5 m- e9 p  oend/ _8 G' V3 V6 N% O  R1 ?: [

5 ]6 r, L  X1 Y- k2 N& y+ \to do-trade* m+ r/ ?/ u( }6 ]4 M$ g
;;
这个过程实际上是给双方作出评价的过程! z: J; W! N6 e& @2 P: q6 u& Z9 ^3 w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- |" m: D: d- ?9 s1 p1 c0 wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) V7 @6 H* P: {- L8 Vset trade-record-current lput(timer) trade-record-current
" A6 {, J* c$ O3 v4 ], A8 Q0 I;;
评价时间. a0 {* e& Z- M$ O3 |5 i
ask myself [- S7 `. `+ a# ^; ?1 I  Z# j
update-local-reputation
7 Z( `- d& v8 E+ v! l' F$ M0 B- {; cset trade-record-current lput([local-reputation] of myself) trade-record-current- Z& M  q/ x% @2 a8 n& P
]: c2 {1 r8 W/ ]( U% \
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" h: Y) }# p! s- R
;;
将此次交易的记录加入到trade-record-one
  \. }/ {) q$ X3 S2 L) p- Sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 g4 i* E. Z5 `$ x7 z$ u4 e' P, Jlet note (item 2 trade-record-current )
; N9 \2 ^6 l  S. y) wset trade-record-current: a8 A- U" `2 G! c
(replace-item 2 trade-record-current (item 3 trade-record-current))
! n* k0 e% @2 @2 ], J. X& E
set trade-record-current
, O9 X5 ?. v7 ], |+ y, O' S8 p! Q(replace-item 3 trade-record-current note)
" z, a& Z+ j$ j5 e( R9 t4 o6 m6 F9 ~% S: D
0 g, x1 N9 Q: F) k
ask customer [+ Z3 q( C5 M& c4 J
update-local-reputation
$ G" M: s9 V/ ^% nset trade-record-current
9 n6 T/ p$ x* Q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

' [9 o7 H' B" N1 n2 N]
" W0 }$ F% g6 E0 J6 p8 F5 T8 K' u" R+ _6 ~% \' K4 ^$ C- p

) |7 A! c$ u, K6 mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! n1 e; g3 x7 [, v* \4 b
; @' D2 Q) U. Z' \
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! P3 d7 c, ?; Q. q  D;;
将此次交易的记录加入到customertrade-record-all
. ~7 V& o; ]1 S0 k7 u6 o. b' bend: e% z8 y1 O" Q) u) O7 b

, Y& @4 Q% @* B: y7 I; T2 ato update-local-reputation; E% S, ]% ]" X
set [trade-record-one-len] of myself length [trade-record-one] of myself) s4 J0 E/ o" C! J$ {) l' [
0 ?) h& U3 {3 B: o4 t' Z

# t1 ~) z9 T1 G; q$ o;;if [trade-record-one-len] of myself > 3
; q$ y7 U5 z- a9 W
update-neighbor-total
2 k& ^0 p3 ]+ }! x% u* I;;
更新邻居节点的数目,在此进行7 W! v. a  O- C  S! e! p+ h
let i 3
! p3 e; C% d$ rlet sum-time 0) P& g3 ^) C' _
while[i < [trade-record-one-len] of myself]" }4 V0 m: H. l
[
. U9 b. R; R1 B1 z9 oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ c. D' i& ]% Z/ }. Q7 A1 X1 Jset i- G( D: Z9 f, ?% P+ K
( i + 1)
8 j) k% {+ J. N5 b. A
]
$ i/ s  g& d/ _5 glet j 3
7 o2 T/ l0 V6 {* V1 s: Xlet sum-money 0( Y2 o6 G9 j5 l9 |# K! H' |7 `9 `
while[j < [trade-record-one-len] of myself]2 E+ \/ e3 b6 q3 J. a  ]
[
7 z' x& ]" y: F, u8 c) mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)6 }; J9 U, q! K' I% i, p
set j
' t3 Q* n& [1 [  I( j + 1)
% U" {; c( w4 d6 N) I+ h
]
: ]3 O- T3 P) w2 d, w6 Alet k 3# o& I) X! N) t- L5 y
let power 0
; Y8 X( W! I4 |0 M9 Clet local 0
  z5 Z4 ^8 k( J# t3 N6 c( @, Pwhile [k <[trade-record-one-len] of myself]
! S2 c  K+ D  C  p* E& X3 i[9 z* P! O7 ~! J0 {* z# d
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)
9 w7 M1 D( k& m6 \' D* vset k (k + 1)% q5 B) w# ]  ~) n% `- v3 i
]
1 H3 }8 d  @8 ?/ p0 L5 l& Jset [local-reputation] of myself (local)% Q0 e% d6 Y, q, l# ^9 Y, L# c# X
end
+ B. b( O1 s. K0 Z* D4 N# q6 v
7 K2 l5 u4 v/ o5 l: Sto update-neighbor-total
+ E  G: T* I' I0 r1 u* D1 k8 ~' _  H0 U0 B) T; A. O+ V+ ?9 X& j3 x$ B
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# b" a' g7 B( C! p# Q! K/ C. i
9 m* ]1 _6 q. a8 ~7 |

: j0 W  }0 S7 v2 y0 Z1 H1 j+ @. Qend
& J5 a! Q+ w1 n! Y4 {* ?
6 r& o" t) e+ w( ]5 B" ^$ b7 Gto update-credibility-ijl ( c+ o- I9 w( x% ?; G5 ?& Y: f' I
' W' U0 \4 F' i# O% D+ 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。/ j3 V8 W6 I, b. W1 R
let l 0
. j' G; L% p9 u0 x3 P! o/ ewhile[ l < people ]5 i4 M! U; n# a5 J7 D# _! k/ @% e9 O) 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/ A7 h4 g+ }4 J8 \% K
[
9 Q  G! T% d2 N. Elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 Q7 u2 f3 W" t) Mif (trade-record-one-j-l-len > 3)1 f, \- C, ^/ U7 m/ ?
[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-one3 G9 q* o" I! k
let i 3
2 C5 `2 p% x7 F2 t. ~6 u- _: ilet sum-time 03 M# C8 ^, E. W$ ~( g
while[i < trade-record-one-len]% {, Y; }5 U  ?
[
  B% i0 u/ |8 I$ Z7 Q8 q* U. o, zset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ B+ s. j) X2 q% u! rset i
) ]& W) h1 ]  D& U5 p# s( i + 1)

: H+ M$ H$ ]4 m. }$ p* t]$ n) n& b% _2 B1 r  o! w. c
let credibility-i-j-l 0
/ a3 e* T- T' E  L  r' l;;i
评价(jjl的评价)
; a# h# X% l9 e2 X+ N' w* jlet j 3
1 G6 S1 I$ O3 @# g# Elet k 43 l, g/ M# V7 V
while[j < trade-record-one-len]
& m! q7 B' w5 S! E) [1 j- q[7 e1 S( Z' |* q. O8 S. m! n
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6 U" c! }' {( {3 |
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)4 ?4 [7 B9 j* W; U
set j/ g' q1 b8 N" t
( j + 1)
" i! G1 d& x. m8 ^, \, h  W
]
* }) {' c! f: d- [2 L; \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 ))& ~, c/ a9 C8 P  x1 B! O8 [

' y( N/ f2 c3 j3 B! Y

0 N+ T# X7 X0 P* p' y" Glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): z# K3 o, T0 v& B5 |9 h
;;
及时更新il的评价质量的评价
' {, L! o% n: c) pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! i* ~# ^; P/ b/ {' i. k0 hset l (l + 1)$ B. W6 f' @2 S& H8 l7 h$ }0 m9 N
]- \- A2 ?9 i8 Z& v6 R, {
end
) k" Z! o0 v; [! ~' ]* W( a3 m' A8 x8 N6 R9 x4 {! B( M
to update-credibility-list- G5 z1 ?  J4 |$ |/ C- `3 a0 S7 P% M/ X
let i 0
: w! o! y: a# j! Vwhile[i < people]* f( y8 e" V. ]8 I: u2 k: [
[
- I) y! l) ?+ C  r  ^: \let j 0# m1 h% @. I- i) y$ y
let note 0
5 b2 e& o% q' [/ i$ _( E0 U% Jlet k 0
8 q# b% U  w- N+ J4 @;;
计作出过评价的邻居节点的数目& c( z; i9 k4 A' w5 l: ^
while[j < people]  h, x, C) O7 x8 b# @5 R
[
' I2 X6 X' r# D1 w) }if (item j( [credibility] of turtle (i + 1)) != -1)/ R4 k, D8 O% j( X& P
;;
判断是否给本turtle的评价质量做出过评价的节点
; w1 R0 Q; [6 L* p) y5 C" M[set note (note + item j ([credibility]of turtle (i + 1)))
) Y$ g0 F8 Y! ]5 F. {* E. ^;;*(exp (-(people - 2)))/(people - 2))]

% W' o( X. y! Z. Dset k (k + 1)
. t7 L0 _; m, e- L9 d]
$ ~+ U% z1 U9 s, j/ vset j (j + 1)& s  ]/ l& ?6 v  u8 _; d! B
]  E7 f5 G0 s4 T3 v
set note (note *(exp (- (1 / k)))/ k)! F6 s/ j: C( O1 S8 t$ i, X" F9 z) }
set credibility-list (replace-item i credibility-list note)+ |/ u+ g5 X9 w2 N
set i (i + 1)
- Y' ^) y5 k$ q! L3 v]. Q3 P4 T) a+ ]$ f' s3 y
end
7 b( c+ Z# W0 m/ W
" P* x7 y' j2 d% M+ q* X( v0 j; jto update-global-reputation-list
2 a! y5 b/ \/ W5 \/ t& ?9 X6 @let j 0$ {+ y  W& N/ k6 }6 _
while[j < people]% X7 P. ]0 H) \$ q, Q/ ~
[
! ]  X. ?: x0 }- O4 Vlet new 02 e( V! w. n# }5 ]
;;
暂存新的一个全局声誉
7 p# e/ P( _8 X" E8 \let i 0
# I1 [7 s' [: W: W' g1 a' q" ~let sum-money 0
* X! X7 P3 x* V' Y  Jlet credibility-money 09 z4 J  D0 U: I2 O+ Q$ x
while [i < people]# o7 N! C" P: i. C: H8 f
[& b* b, s4 l9 B6 v( m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& t$ t7 P  Z( s' t' `! y  iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 S9 r! q5 l# L! U$ W
set i (i + 1)
: ~- X. o5 d3 B$ |5 D! J6 J' F]
$ X: S. F; P3 olet k 0& G( I; Q/ s. X$ v3 p
let new1 0$ J, R! N' P0 K
while [k < people]
6 Q0 I6 ?" y0 F. z" a[% ], y" @4 d6 ~! f$ w
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)6 z/ e& I" G; k. r/ B: X. V
set k (k + 1)
6 F# G- q1 b& c0 l]* u: s" a+ x* a1 \4 O
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 b$ y* l4 Q& m% @0 U
set global-reputation-list (replace-item j global-reputation-list new)
" b4 o; }0 i9 kset j (j + 1)  }1 I& S4 D5 U9 C) q9 U
]0 A4 y* ?2 g( @% F- M/ h1 v# g
end5 V2 Z, H! e- E& `
8 R# [9 E& Y9 u! l9 P
& Q' Z$ N$ u, n- a

5 B" K6 \& a1 L9 u: cto get-color* G0 A! V! ]' S1 A

1 W; W  i+ a, e5 p2 Z; l* Uset color blue
- p, L! C' w2 i  ^# [8 I
end
+ M0 x+ t8 }" N/ a% Z; b8 P8 s% r" R
to poll-class8 y$ P" \3 P7 t: S9 C, K/ n
end
1 d1 n! X6 J; S" D
0 O6 ]$ \: H& U" n+ U' M! Cto setup-plot14 ?: H" f) |" t* _9 p% T- z# W
8 M/ y5 M  f- q. K6 k, X
set-current-plot "Trends-of-Local-reputation"

# m( U, D' {4 M; B
: |- [0 J' l4 N6 H5 [* Xset-plot-x-range 0 xmax

4 A2 J+ _7 Q' M+ {$ V0 f
6 \  T3 A6 U. l) `set-plot-y-range 0.0 ymax
9 b) F4 t* ~: q1 O7 n
end
! N/ B) b9 Y; U% l, @+ c( g$ A- z! r/ D6 q0 X- N
to setup-plot2; h) j, p/ N% S. H3 \5 @; }. S2 X
9 m9 x. i1 g; K
set-current-plot "Trends-of-global-reputation"
3 B! I9 z& A# O( @9 [7 d; n# p7 v
$ a! n4 |& D9 d3 U+ s! o
set-plot-x-range 0 xmax

, g- X- Q: c& X# |) s9 A- A
4 @! O5 L7 w) u$ P4 Mset-plot-y-range 0.0 ymax

5 d$ G: {: s+ `6 S9 Eend
: @; a% A+ R- g: M) s! C( ^; U
- W& s$ K2 f# E( W) Z$ Jto setup-plot3
* w+ G$ R5 n' B. s% `( g6 @. a  {4 u) w* |1 ?$ ^) A4 G
set-current-plot "Trends-of-credibility"

0 z% k% u. n' F5 y5 w2 e  u. F0 l
6 R( d3 O4 W2 v. Y/ ^, Zset-plot-x-range 0 xmax

9 w) n9 M) s" V7 {% A+ ^0 j$ K9 k, Q) K% e5 v$ k. m3 s
set-plot-y-range 0.0 ymax
4 a( p# x% o! Z5 q) y
end8 f- Y' A: P) [

7 w& z/ ~# L5 {+ _: S5 ^to do-plots# e  ?4 `+ Q* i9 k) Q: D
set-current-plot "Trends-of-Local-reputation"% y3 R2 \6 \8 x8 D4 n
set-current-plot-pen "Honest service"9 U5 p& A; `9 m, Y) U& Z- M
end
$ b  q) p2 b  W, W
; W, G: w0 Z% \/ C8 Q" n+ ^[ 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.
1 X1 C  ~. u5 X* Q8 f- g4 R# [  s+ z* z' j$ }$ K
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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