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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:5 {' {; J1 f3 B8 l# ^+ X
to do-business % J+ Q. `0 x' c6 a' N' p; U3 e
rt random 360
4 P* }+ c' ]2 l- ~2 P1 l) x( X fd 1# C  G3 {( O9 s* B6 S+ C! l$ p
ifelse(other turtles-here != nobody)[3 }  F) R- V* |$ x1 t
   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.
6 R- C9 _; K. t% Z. Y) h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " f# _+ v. E7 n( \! \' x
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- i, x* m4 n5 @# G) C! c; a) r
   set [trade-record-one-len] of self length [trade-record-one] of self* M" s% }8 y, Z- @: R
   set trade-record-current( list (timer) (random money-upper-limit)); \  P9 G7 a! O
7 O8 ?8 x# M! y
问题的提示如下:
- R, X, Y) ?8 _% \# M# I: I# v+ g' N+ Z8 q& H9 D+ I+ w
error while turtle 50 running OF in procedure DO-BUSINESS3 L2 a& n( k' H' ]! W6 I
  called by procedure GO
5 u4 l+ a/ t- N' {, EOF expected input to be a turtle agentset or turtle but got NOBODY instead." [  ~4 l5 A9 Y" P: o
(halted running of go)9 X* w. q: F3 Y" I  Q$ M+ r

# a5 }% D8 x8 o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~~
/ s: L& J5 [6 Q8 \% e- f6 C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( z& V* i3 V% ?* l: Hglobals[7 g/ r) \- R. |' L! J
xmax
/ J; w  K# ]: \ymax
  C5 H6 d/ ?: w( Q/ t# C! s: eglobal-reputation-list
/ a9 j$ N, l, V4 ?  H8 L; g/ d
2 p# u5 G! Z! i/ n% C7 F# s;;
每一个turtle的全局声誉都存在此LIST7 N  W* \8 u' K6 S- y
credibility-list% V1 n5 V- i+ M" U& @. R. p1 ?0 \" l
;;
每一个turtle的评价可信度& i7 K, M1 @$ j2 ]0 `# y) P
honest-service" b! w+ M: r/ _9 ~
unhonest-service% o5 a( K& F8 O  t
oscillation
+ N) \2 D# [: y& w( @$ u, q  \& M" Mrand-dynamic  i0 z9 G$ t6 z. O# X. G6 v
]
% K# s4 A2 v5 U, X2 V7 o
: b% u- T! I8 p7 ^+ c2 kturtles-own[4 W1 `6 \) E, X" b3 u
trade-record-all9 g# J& S" F6 B- ]
;;a list of lists,
trade-record-one组成
) Z3 A" @0 w" s- k. C* w! jtrade-record-one4 h$ N; P/ D& i2 \! B- c* ~$ {. t
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! A  D! b$ f8 |* E* C  Z" X+ o0 ~: h/ W7 P$ K! L3 O5 {
;;[
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]]( G6 `! V- |6 h4 C9 Z/ t5 D
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]8 v" O+ F4 L: P) Y- O% 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list3 H/ D( L+ o7 v' N  h
neighbor-total. L% S: f# q$ h
;;
记录该turtle的邻居节点的数目1 ]4 k8 H% j2 c, B
trade-time0 c- v3 X  n' o7 e
;;
当前发生交易的turtle的交易时间
$ y; c* a) w& C+ Z3 Mappraise-give
. H7 L$ ^7 T! m; b% J' T9 P;;
当前发生交易时给出的评价+ U6 v5 p, {4 I# I5 D
appraise-receive
- g# x% A8 H; [0 d;;
当前发生交易时收到的评价
$ Z) ?$ r" z  j# l) Qappraise-time
0 q( |9 b: T/ ~2 k;;
当前发生交易时的评价时间4 y( O% J, j. Z, I# n; _
local-reputation-now;;此次交易后相对于对方turtle的局部声誉5 H4 `: N$ t; N& O) L* K" W$ ?
trade-times-total" ^+ C: M/ h# Q1 y0 B0 E' w" B
;;
与当前turtle的交易总次数
" H8 H" S4 G0 \  Vtrade-money-total6 d/ p- `3 C3 w
;;
与当前turtle的交易总金额
. {7 g' V) B& u9 a- T, ~; S; L* [local-reputation3 ?8 |/ o9 v# ~/ l8 X5 m8 i
global-reputation' z0 `! T( ?* i2 m) [! [+ R- P
credibility
& |$ M3 G5 o% |0 K0 C& I;;
评价可信度,每次交易后都需要更新) d0 ^- a( @  `: d2 F
credibility-all* Z! L# _) U/ ^7 i1 I! Z
;;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. V, j* O5 k; z1 J0 M/ U, f2 p" Q

  X! L7 P/ c9 L+ v7 _" [;;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; `, h1 z1 Z: y4 i
credibility-one
  h4 N' u& j8 y. G0 p;;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people3 F2 W" c# S7 |  ~$ ?! @# c
global-proportion# o/ s6 ~3 p$ Q! A( j7 m4 c
customer" r6 x" r! T$ @$ ?* f$ P7 T/ b
customer-no/ a+ ^' [/ {" {/ \$ O* ]6 g
trust-ok9 Q) ]) G8 H) S
trade-record-one-len;;trade-record-one的长度  g! ]' D4 p: g. y
]- w4 H1 F1 J% g  z  D
1 q. k9 r5 O9 q* a$ Z( }, c1 {0 Z0 A
;;setup procedure, F3 A/ M  j. ]
- w) ]4 x; i- g  M  L4 z% R
to setup# p6 ]% \! ]! H& N7 ~* i& j

  n4 c2 F* E' J; aca

& i; {  `* s. Z( N
& Z) K* z9 z4 h1 zinitialize-settings

$ l$ E, ]6 j7 w( U
1 V- v* V  P. i' O4 m! E% Lcrt people [setup-turtles]
6 T1 A+ n. k) Y7 R* M
' G+ n+ [1 @- s* f4 T; i3 F( }9 `
reset-timer

( I0 M1 n/ u0 h4 {) D0 Z  V6 ], m  c) _/ H
poll-class

0 w# A, E9 E. J: _6 j
- a! R4 E7 G  L9 i/ m" W5 P8 Ysetup-plots

0 u$ `: D3 I% `& v* b  K# Y% ~6 w$ _0 j9 V0 k  ~. f
do-plots

& A" ^' C) [, d$ Iend! e/ Y% q: w/ k7 Z" P

6 D% b/ G& @5 ^; c! V4 X$ W4 \to initialize-settings
( M3 A  {/ l3 _/ \+ v* {( I5 T0 x& k6 L9 _* h3 C; S
set global-reputation-list []
0 n+ _. Q0 g; R9 }. G# W! k7 |

$ ]5 A' Q  J9 j% tset credibility-list n-values people [0.5]
6 T2 f, Z8 p# ?/ I2 @& u: i2 M

9 `5 `) X/ o6 x* |$ i# O* Lset honest-service 0
& X; W! y# }6 B$ N$ F5 w6 [
9 B" E) H, M! q
set unhonest-service 0
# g# Y; Y0 b6 x: L2 R

, u6 Q8 s# K! `/ Qset oscillation 0
" l$ M; }; A* O5 k$ z

: O" J8 ?9 V2 M7 l* ^" jset rand-dynamic 0
6 W% E% c3 M- S4 B
end
& `4 S/ q) B/ m: u3 }: z9 {) m% |, z1 e5 q- c5 ?2 u) |- n
to setup-turtles 2 V- N5 A1 U( k# o) ~/ H
set shape "person"
0 A9 V% J8 V6 g; A: lsetxy random-xcor random-ycor" Z% [2 s! U" q# ~5 X
set trade-record-one []
: w  [" K% l8 ^+ p  D7 C

# s" V1 _3 Z% @' I1 ?/ _! zset trade-record-all n-values people [(list (? + 1) 0 0)] 5 d% i" K: A8 g4 ^- h4 O5 w& y

  g' P! x4 L( a' Y  _set trade-record-current []0 v0 g- S) \0 _2 c
set credibility-receive []# {* ]6 R% O( ^5 |5 Y
set local-reputation 0.5
% C  I; l/ _  W) Y  Y' R" Z9 qset neighbor-total 0
+ I4 @) f3 c! R+ K/ e( s6 e6 e6 `; jset trade-times-total 0
5 `; `7 R/ j5 U, @4 Cset trade-money-total 0* y  Q4 Z! \1 F: d$ }$ P9 ~
set customer nobody# k* z! T5 |( p+ i0 D' ]3 G0 k  h
set credibility-all n-values people [creat-credibility]
+ j# W0 c. u/ \/ {set credibility n-values people [-1]
$ T  J/ d& t8 Yget-color8 n. i6 Z( a" K" m- ~6 d) u$ i
4 r/ Z( i. y; I
end
, b7 C) r; d/ P  @3 l$ I
' I$ y7 j) ~' d2 L0 S$ a% Q& _to-report creat-credibility) r$ W5 K% t' b# }% s2 Z
report n-values people [0.5]; L3 p3 x' w3 R) C6 s$ j
end
4 b  ~; V7 Q5 Y; w! z* }% v( j  Q  A+ ]) O  Q, B$ R
to setup-plots2 |2 r# @2 o& \  F  a) X) S; ]- h
/ T7 S3 m% Z# g) Y6 U
set xmax 30

* a) E% ^% P- n. n
5 N6 H, f4 ?. r' k' H) cset ymax 1.0
' t3 O1 R' C: v* n. {$ R
, O' f8 r, ]3 P9 C6 ?! O; s; l
clear-all-plots
8 ^4 M" ~) ^5 X2 U# Q
7 ]8 f! c+ G6 O5 `3 J$ Q
setup-plot1

" G, t: A. t  l
$ j# o8 o: _) t( ]/ q8 r! O5 m. B  n7 }setup-plot2
& w" X' R  O" E3 D3 [& O
: U% z4 t9 y5 D
setup-plot3

2 r+ V/ V! y& D- Iend+ [0 E5 q% Q0 u2 U' w* d% n7 s! Y0 m
5 O# Z% B5 T+ Q7 [8 J) o5 ?
;;run time procedures
2 p+ D7 n! o+ U7 n- Q  _9 `. H, Z& C) P
to go9 f9 c" ~; q) j! w+ H

) e  J1 M& ~, N' x, uask turtles [do-business]

' h3 o: z7 n, {9 l6 b1 \5 S, W4 jend
* e5 h' w/ H! y# _; S9 r% j" V1 f9 g
to do-business 0 |3 M7 i9 o) t2 x1 a

  _0 A: p: e  p9 d! f. k4 }8 y
% v9 D. B1 M0 u$ o5 Yrt random 360
% I0 c0 r( G2 ~/ k$ I
9 t  @; F: N. l8 s
fd 1
- y3 _0 O. P% C9 Z7 ^: W
7 ~1 K( j" K6 L" p/ j+ n' N
ifelse(other turtles-here != nobody)[
" _3 \+ F5 ?8 @) i  A& f
9 u7 Q+ x5 N* Q. b1 U: i
set customer one-of other turtles-here

0 j& `9 b& w% E8 k6 m- j/ K: @
$ M2 P( a- A. w# P;; set [customer] of customer myself
6 f% Z% q% P+ Y+ n$ X* X
6 t' |! n! M+ r0 H; ?
set [trade-record-one] of self item (([who] of customer) - 1). k& ~" N( O$ k
[trade-record-all]of self% N1 ]8 n% I3 G% B  ^
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 t7 n9 O7 ~* g' O; R

5 y  v7 s( e# Cset [trade-record-one] of customer item (([who] of self) - 1)
5 A1 |0 a- X3 @% [7 [. i  o9 L, }  f[trade-record-all]of customer

8 f: B0 W; ~- [( }7 o; {1 ?% s* `( C5 l/ _  c$ V
set [trade-record-one-len] of self length [trade-record-one] of self

4 i8 F# J4 l  b) P
, f5 v$ r' v3 Yset trade-record-current( list (timer) (random money-upper-limit))

6 u2 _6 j1 I) ~$ S/ c' H. t: ]6 s* t" f0 `- U
ask self [do-trust]
' s4 t' h1 M+ M: M7 R  N' p3 x;;
先求ij的信任度- F1 a4 r* B% W( @! M: x

% H" a. G6 L6 o4 x- T) E, mif ([trust-ok] of self)
1 T  _5 d" q  d;;
根据ij的信任度来决定是否与j进行交易[+ Q& x" y) v! k2 f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) Q; f, b& v% Q
1 R' u% k3 s) A8 k9 `" q5 y  {
[

7 l9 N! \/ u+ N) B8 c4 m& T; x
; i+ X2 n  A7 U; r& D1 X( ^( \/ ddo-trade
1 ^0 A* r& j4 d6 S2 K2 p+ \( `
* F) F( s$ {* \" _2 t) o
update-credibility-ijl

: r6 B1 ^( @( u0 W1 Q' d& I2 z, Y8 I. F2 m4 n: S
update-credibility-list* y) C! m: C1 v8 v! N( j; t
+ l  [# k* Z) X

9 X+ D- F. r9 k& f, a8 ?update-global-reputation-list
: a% P% ?# [. x% Y0 W
; Z9 e. H, u. `$ Y9 J  c2 i$ p
poll-class
( P8 z. r, u; _  W& ]2 f7 N, S

8 D* B6 o5 f9 \8 |get-color

, O) C, V0 `+ ?% h, w" w2 V/ [( Y+ k* q) a  y4 H1 }  m# H9 j
]], f; X7 L2 Y1 e: L
1 {" _3 k, ~4 W" c3 _; i
;;
如果所得的信任度满足条件,则进行交易
4 I1 S. Y; }: D0 H: a4 t% c4 h
! `" Q: Z& I$ C! k" _% ]. v[
7 C+ n7 ~9 f# P2 {' r- w/ I

% Z! G3 m) n9 s- K/ Jrt random 360
# }' @4 M  ~+ V6 n" M7 L0 v

" ^4 P1 _& V1 y! D4 M1 afd 1
2 ]- ]6 O- x4 t: ?

3 I* h- [4 C( u]
6 E! J: Q1 G6 l, F

  c' N1 s9 r2 t+ V5 k7 R7 l7 c8 send
# I/ [9 @( m9 C/ {

8 T/ s" [1 I+ m0 f  Oto do-trust
8 R2 i" `: ?" }set trust-ok False% @) ^2 F: O+ Z% U! m

$ {8 X& q% Q" R
. D( A- I9 T0 E& D) K
let max-trade-times 0
8 H$ J: `4 y& R4 M- C+ mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 u1 G. [* ~) A& H  m# Ulet max-trade-money 04 J4 t6 D5 y9 [9 B( R
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  C. R9 Y# m6 }& _let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
! l0 ^' L6 {9 W! F9 p0 v
% m9 l4 C/ H# W

# P, P8 |# M. V6 j2 ^1 s5 d" Uget-global-proportion6 \2 [- e+ r+ R
let trust-value
4 m, @2 T3 m5 d4 Z  Z: t4 P- wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
* b, [9 b) q) i
if(trust-value > trade-trust-value)( y9 {3 y" H' a  w
[set trust-ok true]- L1 O. L: j& _: h0 q6 O$ T
end
, _( @. V1 m9 H
5 T( V4 \" n5 G( R7 k4 f' [to get-global-proportion5 [" |4 a, ]! a0 Q  u% ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 N) H& O4 V* D( j- D3 a
[set global-proportion 0]. b' H) J! J; R: t
[let i 0: _* P0 Q+ \7 `8 O* J
let sum-money 0" `* ]! [5 `6 M" A
while[ i < people]3 J* P7 x. g/ ^! ^$ E7 Z" J, }- Z( u
[
; `" ~  S, K. U  O, r" R( tif( length (item i
3 l, A& {" J! l3 A8 X& w2 ~[trade-record-all] of customer) > 3 )
) X" S& q' Q$ H5 Y/ T
[
: ^. {$ B- V7 B# c0 @: D+ j0 ?* ?set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 ~: F1 c. R, Y2 J, @$ L]/ p$ u7 v) o9 s9 ?
]
+ F# P9 b  b, e" V+ U- d. \" x# blet j 0# }( b! z- F- D! x
let note 0; O1 [  g& N- b: B) c/ m" [
while[ j < people]; ^; z) U/ A' \$ d: w
[
1 E1 Q, U+ }' Vif( length (item i
1 C8 b4 }0 x! f. Y6 V[trade-record-all] of customer) > 3 )

* r, K& A+ t$ w2 O0 M[5 R. f  D7 Y: q# e5 r( n
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" [( s" H5 m( |/ q5 K& C[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 h( `$ X0 \( w[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. O- C' G9 f5 {0 b$ n
]6 d3 j7 R: O2 b) d& W0 J
]8 y) _( }1 N( F# j, L
set global-proportion note4 G0 _$ n- d- `# s5 D4 l
]3 x* P; m# G& T4 }, `- V+ I
end
7 n. S9 i: c# _2 E; H" o% i/ t
$ b4 X/ \, L2 w/ [; qto do-trade
0 ~9 J3 ~' S+ x/ G;;
这个过程实际上是给双方作出评价的过程
+ x: n3 Z: l) f8 G9 Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& `- a+ n4 q" w+ o) M; oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 m: _( g7 A. A0 C. R# \5 }set trade-record-current lput(timer) trade-record-current
1 O: T) r9 d/ w8 l1 ~;;
评价时间7 M* ^* u( K# S  `
ask myself [
! E) N, D' ^2 a; W6 v6 rupdate-local-reputation6 @1 j) N. S" |/ _- m7 B
set trade-record-current lput([local-reputation] of myself) trade-record-current) G: h; r5 ~: x% l& n
]
7 E4 i, U; N  N& K1 h: p/ _# Eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' U* r6 k2 h$ K6 Q
;;
将此次交易的记录加入到trade-record-one
& J6 K' |, x4 E) v1 v  H' c) b8 |set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* r: }+ S0 l3 E  Slet note (item 2 trade-record-current )
& e4 T# B0 d/ r) Y7 c$ Sset trade-record-current* a% m9 Z- G1 V& u( R% ]3 W
(replace-item 2 trade-record-current (item 3 trade-record-current))

. o; {1 g* s- Nset trade-record-current4 W8 E. A6 L8 F# l
(replace-item 3 trade-record-current note)2 w4 A: M# d7 z* P% K7 f
/ R, V5 D  A8 s6 _. h' U
+ p. h0 D5 R' a8 |
ask customer [
; Z3 V" S) M/ I5 G/ D: Bupdate-local-reputation
( K( l7 R4 [) K8 R4 J- pset trade-record-current" }' I  j% T9 v
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ r( h, D* R. m2 O8 A
]
% S$ H6 e6 x  H' J/ d% Y5 ?( a2 s* ]. `5 R+ m/ U. h1 {# G
/ u1 V0 R+ A/ e* D
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  m4 p8 c+ Y" c

0 z% ^0 R9 b( o% Q8 oset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& B' I( @$ s+ c% s;;
将此次交易的记录加入到customertrade-record-all/ W$ ]3 G1 p9 Z# g% c5 ], v* h
end+ h9 M& S$ v6 \" F1 |+ e" N( D' D
( T0 D6 p0 ?' V# w8 P( u8 H# W
to update-local-reputation4 E, B8 p  u* V2 T6 ~$ s
set [trade-record-one-len] of myself length [trade-record-one] of myself/ \7 M2 ]. H/ e/ D

( ^- q, J: g8 G) h$ M
/ m1 Y4 @1 R9 l- J' Q;;if [trade-record-one-len] of myself > 3
6 O+ \4 o! N( w; s/ t
update-neighbor-total
3 n3 Y& I7 M( F, E8 [) t;;
更新邻居节点的数目,在此进行$ j  I: {. K1 R$ [  `% ?
let i 3  V- E6 p: v; |. }7 F
let sum-time 0) a3 G' b. b( P0 o
while[i < [trade-record-one-len] of myself]& I& m: Z4 I6 r5 y, h0 T% C( p
[
1 X$ b$ x5 T( O9 a  k7 j+ Oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 n) u! F0 \, Z! pset i, n5 W* [2 M( d# D+ S& J
( i + 1)

) Q: j! q8 {# H% V]
+ [* ^8 h' _, c4 qlet j 3
  O  [; H: b4 _9 b2 plet sum-money 0! W- t$ p# f0 B) n
while[j < [trade-record-one-len] of myself]2 X8 h1 {5 v+ B% j
[% n( n; d, S, |) M! \9 |+ r
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)
) a+ f! B9 E5 yset j
2 E5 C1 X* c6 ~& |7 V( j + 1)

' N$ N9 b3 M% }" o]( _4 E0 E0 f3 d3 N8 _
let k 30 d, C! u# ^3 F- W- a2 z
let power 0
+ h4 y& K; t: }+ ulet local 0
2 I5 M7 A) [8 d0 A" i3 C: d( bwhile [k <[trade-record-one-len] of myself]7 K) E5 Q4 J5 V3 f  ^+ Y
[
3 Z- F8 U) w% [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)
& K! t3 M. Q$ Bset k (k + 1)& x* F2 p. _" z0 I  I; ^
]
, u4 r: l1 A" z; g2 y: ?4 M. {' Dset [local-reputation] of myself (local)5 d8 ]9 P- ^  Q; D
end
" c' M0 x4 H. ~! W3 n* d' u; ^( a8 i2 M( E) O/ d3 r" k
to update-neighbor-total
8 y* ~3 k& `9 n# K
" E7 A' r7 L: pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; D3 M- B) l+ a; u
; R8 ]& C2 |3 u% k

) |5 v+ r" I5 H# i& }end/ E; C) \" F% k( \6 e/ S

+ B0 u" o, V- e) m/ o3 N* jto update-credibility-ijl . b9 u+ @! Y/ L5 `( R# k
8 _& j2 Z% W* i. V. F. V
;;
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。
) @& X) T* y5 M) ~' Dlet l 0& @0 g# |  J* ]( z  t3 P: r
while[ l < people ]
" L# {& _5 d* d4 F* x, w& U;;
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
% ~4 K  O5 t8 b& D; @[
9 m  w3 K* |/ a2 rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ L6 H, [. H- F/ W( i
if (trade-record-one-j-l-len > 3)
$ j* C) h0 P( U$ G# n5 F[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
- h) p6 ]8 p/ H2 x0 Q: u1 |let i 3/ \( F6 O7 c/ K7 f7 }# ?' I
let sum-time 0
& l, @: }/ K5 z" S, Jwhile[i < trade-record-one-len]
4 H1 O, h9 s2 K! Z+ ~5 a( {[
2 w% x" O1 Y+ S0 m# x: @: _set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# U5 r& u+ E8 U$ R
set i
  `6 Q' U. N$ @& o( i + 1)
( m% u7 j3 |4 e/ M
], Y# q. m4 g3 K( Y
let credibility-i-j-l 0
# y5 t5 n8 M6 F. U, m7 H;;i
评价(jjl的评价)
% q1 k0 ?4 y: x# J* s+ Rlet j 3# ^7 H9 v( j1 _
let k 4
4 v# u0 J, f8 ?$ Gwhile[j < trade-record-one-len]
- x. f( M$ C' `: e% d9 A[
; l% D/ `* G' f8 {( W: xwhile [((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 |' n. r3 l& B$ |4 i* `5 C$ P7 {# qset 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)
# o0 y+ }3 b9 i1 uset j
3 a3 u% H5 s4 T, \' Q0 V6 e( j + 1)

$ d- S9 Z% {7 M/ B6 B]9 g0 r: w/ s+ [/ h' R% f8 D& h
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 ))
$ A" R& e- _( v6 `! l' O7 E  k

9 K4 G0 M5 x5 j: e# P- mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* M' I- f" Z9 X. P5 N+ j;;
及时更新il的评价质量的评价5 P% H9 T; T% ~: R
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 U$ |$ Z" L) {: R1 [/ {; ]" M: ^set l (l + 1)
  ?+ U' u* T" y9 z], `# {0 J; W8 M1 a$ a, {
end
. m% E7 e# D0 y5 x9 H5 l
; h, ^; J2 j* j8 `  X5 wto update-credibility-list; n5 Y% ^/ w1 `: v9 O! ]
let i 0( f* E* }) J% F0 c
while[i < people]
% _0 \* V! `3 A3 I2 Y% p  A[
* a: M+ d4 y) Q0 y( s+ ilet j 0
: F( C9 a% r! [& r* m! o( X" p5 ^5 ^let note 0
5 K) t5 `9 E& A# F2 f- c. ?% C! Slet k 0
' R/ K! Y8 u9 q;;
计作出过评价的邻居节点的数目1 B. h3 L7 d5 r% x$ G) [, a
while[j < people]
5 p8 I9 D1 y' V0 {: v3 J" c. }[
7 w  b* a- T/ y2 Sif (item j( [credibility] of turtle (i + 1)) != -1)( O7 _7 @" O  ^6 g1 n7 z6 o
;;
判断是否给本turtle的评价质量做出过评价的节点( V* `' S$ k: ^$ }" z
[set note (note + item j ([credibility]of turtle (i + 1)))
1 N. d3 D% G6 k$ u- X;;*(exp (-(people - 2)))/(people - 2))]

. v* U- o  Z( K, U0 Cset k (k + 1)
# o- I0 {+ M. T7 g% k]1 `. h: f9 I6 y9 N. x/ ^
set j (j + 1)
  x1 _" a  B, c6 Z- Z]
2 L' E9 U0 W: A; q4 t$ K, b- Q: ^- ~set note (note *(exp (- (1 / k)))/ k)
( [# W$ ^! h; S, G7 e+ K- B2 Tset credibility-list (replace-item i credibility-list note)+ B! C) V# z8 a1 {
set i (i + 1)' U& A# m; N4 P3 G  L3 H
]9 Z1 F! |8 [% [. x* x& y4 C3 C9 K: i
end
9 z" L% z, t( G1 Z6 N) v$ w  K# F: g  v
+ j4 L' |/ f! l+ t2 N3 |to update-global-reputation-list
, r; F0 N8 E; I2 Q5 Q; Nlet j 0
2 v: ], x% J2 ?while[j < people]
! c6 |9 b$ c0 l0 z; q* N. D. u[1 \" w, G& ^1 B6 v/ i: o  P. ?3 s
let new 0
. O# S& S0 P$ A+ b0 k;;
暂存新的一个全局声誉
: l  F7 e4 P5 R; llet i 0
1 L, m+ F+ q$ i; ^let sum-money 0
# q. c4 Q6 B* ?let credibility-money 0
) s& i. }5 t" ]' z; B1 C+ n; Swhile [i < people]3 C# \# e) |) J+ Y6 @' Q
[( n: q+ k2 \; \% v
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  c/ f" j, F4 |2 _. q5 L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# c/ V5 m$ L7 F; H+ Pset i (i + 1)" K- o) c' {7 O2 K
]
- B) }' w4 S0 b( p/ _! F* @  mlet k 0
. R* A$ A' p1 a) B3 t3 }let new1 0+ C5 n! D- n8 v0 Y) J. u0 \& ~
while [k < people]5 y/ X0 u. k2 F1 y& Q/ u
[6 y( V6 [" Z6 L* O# y
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
/ Q& _( k, O1 l' q; ?set k (k + 1)
) F. W& T$ M2 V8 [1 U]9 L' _* s, l# ?3 s: {# O
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; h2 H( Z3 g" y+ B3 y$ {3 s
set global-reputation-list (replace-item j global-reputation-list new)! M3 A* `, p: r* P! C, c$ O" N
set j (j + 1)
. D* y0 r; C; L8 F& }" ]. p$ |) L0 b3 N]7 m- U/ N; f& j( E$ E/ s  C
end
8 P' |' {; ]4 R6 ?5 |* p, v: E
$ p; u! X( q7 e0 C, v# Y6 z7 d& }9 _3 ^$ V2 d
1 I: q3 ?2 K8 p$ C+ |* ?1 L7 M
to get-color+ g& u" `( o1 y/ ~# h  E: H. a

4 }: O0 U( T6 S8 |; M' T. wset color blue

  ?1 @" u# F) y) A' F8 Yend" c) ]+ N: ~1 z6 t! X. o
0 Q4 G, P# h" D2 }( U8 P. R
to poll-class  \' ^+ j  h5 [6 J& D* A
end
. e4 Y  V6 M7 n
# _7 `- E/ g& k  s6 y9 nto setup-plot1
) }( m2 ]% |# C$ Y
4 D3 ^( K" J8 b% ]% Uset-current-plot "Trends-of-Local-reputation"

+ k% G! h1 V7 X, P3 I2 @9 d. x' T- W: d+ N& T) k: }) _0 j
set-plot-x-range 0 xmax
/ t: O* Y7 Y) `' Q" U" `

1 Q8 e" j- ~) S8 e  yset-plot-y-range 0.0 ymax

. A# E/ o4 H5 Y/ l1 H& X3 l1 send
0 w1 P. _+ L0 M" A. j( h, K9 m; W6 h3 A1 |% P8 d% G/ R  Z
to setup-plot2
6 b4 x  z& M4 I# b& Z5 D$ O4 y3 f( N+ y; w) K3 \5 R; }9 i$ w
set-current-plot "Trends-of-global-reputation"

( w2 ?. O% g2 J7 F0 p; C/ X* E+ ?8 n. R
set-plot-x-range 0 xmax

4 X( m) p- b) Q! J  y% j& w1 U& Q7 D6 c0 x6 x; A! k! k, L
set-plot-y-range 0.0 ymax
' W& y; o4 }2 s7 i
end
* a% ^% }) c, k) j0 G* K( x& Z4 l4 i; \; d1 o$ a& k
to setup-plot3- O6 k7 P$ g" s+ r, H& K
$ u6 o) u: x! v8 }
set-current-plot "Trends-of-credibility"

) Q, q% F. A3 ^
2 |3 V5 b2 b/ }- V0 _: |9 w4 wset-plot-x-range 0 xmax
: N# p5 N- o( ]% }
4 U6 K* p2 O. O& Z+ ~5 v0 ~
set-plot-y-range 0.0 ymax
8 g, h9 D& O  C+ I2 x6 l0 i
end) o3 _0 X$ v' w8 q" u7 w# O5 s( x3 [

; a9 C! u$ m, `8 Uto do-plots
. g: `" e, S% ~6 xset-current-plot "Trends-of-Local-reputation"8 W* z3 Q/ f8 G9 G8 a
set-current-plot-pen "Honest service"" }; X2 j/ g( m8 F5 ]) M
end; B; s, X1 r" V( X, e! @6 l( E( S
0 A& e5 s, Z, ^. P9 v3 l
[ 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.
7 `- o) {0 e) H8 O- I9 W- z
/ h* }! t# i  N! Q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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