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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:/ v5 E# k* c& b3 J' }' a& w! J
to do-business + ^- `, x. B& A8 A0 D7 z) y' W# @
rt random 3608 ~1 J( O; D) w+ z
fd 1! d1 ^, d5 B1 Z, c9 g
ifelse(other turtles-here != nobody)[! Y  l7 @* V% f' 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.
* E' B- `; d  z- F  }2 k   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      |3 \* @& s  D: F' l9 }" U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& `8 |. r# i' [! p  Q
   set [trade-record-one-len] of self length [trade-record-one] of self; |* N4 R( P) t# \% c2 l
   set trade-record-current( list (timer) (random money-upper-limit))
/ o3 A' {2 g% J  m. |/ i, D9 P4 {. x- c; L
问题的提示如下:8 M, ]9 p4 _8 f! W
6 v( s- a7 U4 E( C% E$ G  S
error while turtle 50 running OF in procedure DO-BUSINESS& N! y7 \. {6 F& @9 `, e8 K: }6 {
  called by procedure GO
+ n) @: {3 e! ?- dOF expected input to be a turtle agentset or turtle but got NOBODY instead.
; I" ?' r6 S" j
(halted running of go); k+ a% h/ F, K; [; D

# E8 P# c4 {2 ?" Z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~~
) q) U  E6 q9 n6 {2 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
+ t" b0 s; l: L5 w# o: u" V* [2 tglobals[% k- `/ W5 [8 E" _6 }  p
xmax" @& V0 o7 r) E; w0 j0 k
ymax
6 b" J- d" }5 E" G, \. tglobal-reputation-list8 O1 m1 z4 _/ {! o/ n
( Z( e) {4 ~9 y5 S# @. e
;;
每一个turtle的全局声誉都存在此LIST, n- d) ?( F  F6 Y* f
credibility-list/ K9 c* _9 ^$ v5 F
;;
每一个turtle的评价可信度
! I7 n* g) O2 d4 d( Phonest-service
/ j5 N3 Y7 e- R$ q1 m2 Q3 Kunhonest-service
7 m& B3 L( M( ~$ d% Q& joscillation7 z( D4 R- k3 y
rand-dynamic
: d: a1 K' n: V5 T]9 s* Z$ \& o; `; M
" K3 ~& v2 D1 C+ }* P: a7 f/ [
turtles-own[) P# S" [( l4 A' M' L% Z: f
trade-record-all
# U; ^# m4 A8 g3 c- d1 B;;a list of lists,
trade-record-one组成3 m" Z. \7 c# H4 n0 s3 @7 j, y
trade-record-one' W1 D& g; 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* R4 H. V% s* s+ K) s

' U& L3 c+ H! O& h, |;;[
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]]
: b3 l9 g) M9 N5 g% |% p& \$ i) }) {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 L( Y" @3 k$ K, Z! Q* M- V0 Hcredibility-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list7 t1 Y# x# f4 b" x
neighbor-total0 m8 ^/ @" `( c' H, R
;;
记录该turtle的邻居节点的数目
6 a' q* v/ D  ?# c* ]& d/ Y! mtrade-time" \2 v: j) T* {, o6 k+ v7 i
;;
当前发生交易的turtle的交易时间
' r3 c* x; A: A* Bappraise-give
& ~; G* x$ Z$ w( q;;
当前发生交易时给出的评价
! k9 x2 q" }; [2 B$ tappraise-receive( y, n9 v+ S% k
;;
当前发生交易时收到的评价- H6 \" S! g( @$ z; C- y
appraise-time
6 p3 \9 z. z! a& ~7 D3 \9 Q;;
当前发生交易时的评价时间
0 t1 e& r/ R7 u0 B0 ~9 Z( Slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
' ~. s3 k  b, ?$ l$ p! z; ^0 `trade-times-total1 t: k9 Z3 Q1 L
;;
与当前turtle的交易总次数
. w: Q1 Q( z& ~. W0 }8 H, Jtrade-money-total
5 B9 t$ u; ~6 X9 ^) D;;
与当前turtle的交易总金额
% ~8 R' {) o  q! _; @+ e% K( elocal-reputation' S: J* T1 E, N8 x
global-reputation
; A: F4 Q' r" f  J  x2 Q1 `9 acredibility
) _$ ~, G% _. l: F3 ?9 G;;
评价可信度,每次交易后都需要更新
/ [1 _2 B4 w- K  d$ W* {credibility-all
! ?5 t9 s, l+ {* B0 g7 S  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# I" |( Y+ Y/ s+ t3 u5 v; N

3 U* y0 {( o- t) p+ j9 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
% ~7 }0 {) W& Q( `) }credibility-one
" v6 ?3 }6 ]0 u4 R, 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
) \) m+ \; b6 F6 qglobal-proportion
  n( m9 `+ `( f' [1 ~customer# A/ ?3 z0 @' t7 F; h! D9 [
customer-no, o- I$ E* `' P3 f& C7 W2 a
trust-ok
& |' v; P7 K3 o9 V7 U' Q6 @4 u) x4 strade-record-one-len;;trade-record-one的长度
: F9 I& j" O5 ^# x, T3 ^]
. {* O# ^! E/ g/ F
" y9 @% v: t2 h8 h, |8 L+ p: l;;setup procedure  \1 R0 {, g" ^/ ]' s' l% s8 M

) |# S; w6 `( G/ W2 O% p- Sto setup
( D- H; u6 O, h% a. k9 L2 s3 v7 t; ~5 c- q9 q
ca
6 S4 v6 U0 U/ y% a1 J
# i/ R3 D5 Q* L) W' p/ m# n
initialize-settings

4 I# }6 V5 C! O$ b$ d) n. b+ |8 W5 Z, C) W
crt people [setup-turtles]
, n$ W4 D9 X" T6 z. G

# P; m2 c, K6 _  @- \  N0 jreset-timer
3 L! N& J$ o) u2 |0 n: k3 z
8 i1 J# C( r& w& K* _0 [
poll-class
  _/ g" C4 P$ t3 x8 K: C  d/ I! W

* X. |) o: |% G% R8 K, c* L  gsetup-plots

0 U3 M0 R0 B# l6 y' w) [* k. B$ s  W: W" d+ N9 \
do-plots

7 v6 Q0 F% N& Y! rend1 {" e3 t9 g& J2 u

4 k; a+ h9 t5 Pto initialize-settings' r  U3 x7 |4 n# A! K

$ |/ \! i& B! a; B2 g( E. w/ J# w1 eset global-reputation-list []
, N" b2 y# `! a! ]
( z. C( b4 m8 U# J4 ]" L
set credibility-list n-values people [0.5]
2 e) Q' Q  w- l
8 }: C7 |! X- p* {5 x
set honest-service 0

" E' ?1 g) f2 Z/ q4 G3 f
& c0 T6 X* K8 h' W& r: _set unhonest-service 0
4 e; R2 d. }' C: f6 Z

( X% ^' E/ j1 _. U% o, Uset oscillation 0

5 s: e2 m/ K8 |8 a' \; H0 o' s& `( V  q: n
set rand-dynamic 0

. T2 x3 g5 J' W; f  zend
2 F$ L7 Q/ P: g1 X
: V, v# D2 g6 Q* ?( C0 l7 S. |to setup-turtles
+ |9 o1 n4 j) g4 ^, M1 f2 ]! Rset shape "person"
, ]% @& d2 N, t% osetxy random-xcor random-ycor0 Q, Y  a: h% ^* ]5 D
set trade-record-one []
& ?5 s# t. S. K6 |' S
) c- b4 r$ @% }% j- }
set trade-record-all n-values people [(list (? + 1) 0 0)] 5 d9 G$ |) W9 N' Q6 R
  T& v! I7 g, B, D" j. A
set trade-record-current []3 R- A, K5 K. l' u
set credibility-receive []
7 d: ~& D$ T6 }: Y8 a  Jset local-reputation 0.5
8 |# p: N" c7 @  e  f" _set neighbor-total 0  ?8 W. N" _8 ?* e* @- ]
set trade-times-total 0) \( O5 l  @0 X2 l
set trade-money-total 0, E$ P% Z2 u7 s6 d% ^* O
set customer nobody: F$ L/ d% M7 }
set credibility-all n-values people [creat-credibility]
; i: [3 T/ U  n8 u) rset credibility n-values people [-1]
: t/ i. n8 a4 F: }7 Eget-color; J$ q+ _+ l& O) V
) `8 W- f9 W( @4 f( A2 |
end) r* H9 M1 ~' |
' V1 {, c* O* A8 _, S7 z
to-report creat-credibility2 z; w+ S+ c% O( Q& Z% C
report n-values people [0.5]
0 S# B. `/ D8 _+ w2 vend
7 s: |0 t$ F2 G0 @/ J, F
" u) `6 g" a" ?to setup-plots6 H& T  [8 D* Q& Q
) i* q0 ]% l( O4 h6 e7 _! p! p
set xmax 30
3 W; a( o, t5 E

$ K1 [- Z7 L- o! G3 {2 M* aset ymax 1.0
2 Q* O6 z, d5 o; \# V$ p! R

1 L6 L- R  A0 q1 Z. Qclear-all-plots
% R+ ?& ?8 X/ I4 R9 P

1 ]& t  [1 s8 q6 P$ c- Bsetup-plot1
6 t. h; J% h5 W: s; E" v# N$ U4 T

; |! y' J& ?# j$ }setup-plot2

' A2 r# @! j! J
  @) }3 C' |: d7 Wsetup-plot3

7 M0 v& M4 q! m2 J: _2 x9 Gend
- P& C9 i4 X( p% Z: }, h0 g  @% Y; ~! f% q3 J4 Y
;;run time procedures. b# Z2 R. x! N. N8 X
! o# H$ X  v6 r& B- Y; W7 E6 T
to go
# ]5 s+ g1 T' c: A  E) F4 C5 N5 O! r! V3 `, B! A7 B
ask turtles [do-business]

0 |( h2 D* q  `3 J8 Z& Dend5 J1 s& ~0 E7 ~' J! T
% b7 v) P+ @5 a7 d0 L- x
to do-business - G+ U2 R7 [. O

: F! Q3 ^2 R# B: A9 g: ?
; j& V/ s: n! U9 {. Art random 360
3 }$ M! p+ I, @- i2 A4 |

- L" j- l# ~# Z  kfd 1
" X5 d  U$ X% ?, ]6 ~

& K3 n0 J0 t1 p- E& o) q- P6 Xifelse(other turtles-here != nobody)[

8 t7 d  a6 z/ ?. X( S. T! S* H( ^1 D
set customer one-of other turtles-here

& }$ F  N( |! I3 v" [+ O# q
( V" Q& Y3 O- \( X$ k;; set [customer] of customer myself
, e3 z$ }, {* p0 e! @
; H- m) }, J8 t9 j0 X
set [trade-record-one] of self item (([who] of customer) - 1)/ Y$ z* l7 D7 O! v5 e' W# N
[trade-record-all]of self; U! l: m+ u8 ^# D& n& g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ d. E4 r5 S/ J9 Z. ~" E
- s3 p% |$ N1 u# B, w" W6 R1 t
set [trade-record-one] of customer item (([who] of self) - 1)
. K  G( y- X7 j) ^% c$ u# j- f5 _5 a[trade-record-all]of customer
3 r; e) H1 f- K2 d. R
  G: o4 Z# `$ Q& t' E' \
set [trade-record-one-len] of self length [trade-record-one] of self

. S0 c, R- u9 J
6 E6 q9 N8 h$ [8 i- Xset trade-record-current( list (timer) (random money-upper-limit))

5 F+ j$ Y/ \$ e6 ^% d' ]) @( `+ s- \  d* \
ask self [do-trust]3 A( t# M8 B$ n& @" U, R( y
;;
先求ij的信任度2 m4 Q$ s( s% g

% g. N; Y- [! S, h1 e# L8 jif ([trust-ok] of self)
  G$ Y8 M' b7 O9 |/ \( A;;
根据ij的信任度来决定是否与j进行交易[
. B/ A1 T) k8 G: D' vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ ^! C8 s: v/ k  C/ F" T" g1 s, z5 p8 a% i, k$ X
[

0 B1 W: v8 e) o8 j2 b3 x% |$ g; P2 O+ \+ k: o7 L. p
do-trade
( F* w; x' g6 O7 @' l# w8 _
" }  U5 b; h! _: Q3 Q5 F" }
update-credibility-ijl

5 u. B4 g" n5 k" b; H, v$ L; Y2 j9 t& h9 n# ~1 H+ k- f
update-credibility-list
8 m3 M& r) E; V0 r

$ B  `" n; Y* K/ q! V
! S8 j/ _% O6 Iupdate-global-reputation-list
, v; L# l8 w. j! Y. x
+ L' J2 b$ T" N$ F3 S; w/ o& Y
poll-class

' T; g7 o. Z, s  @; j/ {# A! Q& o0 F/ P0 Y+ x. {) s
get-color

! T. M/ H! g" t+ o: H8 V% z8 S% P1 Q2 ^2 u  U8 J2 f
]]! F2 Z8 M& n/ s$ b
; @- P: P& R; k7 H
;;
如果所得的信任度满足条件,则进行交易
% R+ [( s2 ^; U4 f
. ~, w5 ]" W$ [! U3 [" ]) k4 V/ j[
0 \- s# }' J) i9 W

0 |2 D9 r; m$ [9 c- f+ krt random 360
2 `7 y, I& I  ^; M8 D
  R! N" z2 P7 T+ G  H; r* U. m1 H" g
fd 1
8 _! L% L+ V7 k0 L
' a$ L1 D2 C4 z( k" o! j
]

, s' W8 v4 o, g% {4 E$ `" W4 X* u  b, \& n. k
end
  l* R4 ]; \0 @! q: Y" C6 T- T
. N2 \8 c$ H/ j! S& `9 i7 ~
to do-trust
4 R# ~* E0 b$ _9 |set trust-ok False
+ y) j" |' [3 R
  s$ v: b8 G, |$ G$ N$ c* I8 z9 y
/ r3 ?8 T: g2 z! i5 H7 J# T7 X
let max-trade-times 0+ [7 Z2 x) t. s8 g3 G5 I( `  t. J
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! B( h  E  {; Y! T+ K# j. g( x: H8 {
let max-trade-money 09 b% G* ^9 L+ ?9 y  q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 b2 t# M2 W; l: s) b$ b7 I" n! Alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# C$ o% W0 n* b; l$ s' U9 t5 k  Z! o# T
" a* Q7 ]. @! r# X' C
get-global-proportion
! E  A4 Q: l, P  l* y; [4 flet trust-value5 I, x6 O* q+ v% z6 ^
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)

$ r! X2 q6 \: ?" k8 L' A# p1 N+ Oif(trust-value > trade-trust-value)) u3 f" E& u) C
[set trust-ok true]* s5 N" T, g2 u4 i- ?- ?
end
' B- |2 d) V# S* t
$ ^; m! d2 `3 p, h% `to get-global-proportion% f6 w- n! B  D9 Q# k- _. R" |
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# ?5 i) z* R3 Q. {[set global-proportion 0]
# `. b/ j: b( l+ b7 _[let i 0
- ]% Q: M0 j4 ]' ^! h6 ^. slet sum-money 0* Y: B; C5 F- ~" m" ?9 C. P& s
while[ i < people]1 R4 x& M" {; i4 ^# }& I) n
[
: x6 J( @. {0 g; B/ \if( length (item i
# A( n7 s& X- q/ `1 ^7 M[trade-record-all] of customer) > 3 )
) x: D+ f2 \& ^& @9 S1 j
[
/ f6 V9 }  t3 n: }$ oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 a7 o+ q  z% v; D7 s" ]( }+ U2 M6 Q
]
9 K! Z& Q0 v' A]8 h; j4 S4 D+ b- o# D
let j 0
% w* I  l6 v7 U' Tlet note 0* ]; O$ I& a+ Y; H
while[ j < people]8 \( z0 N5 X# M7 x. B) A! l$ a
[
/ L; R  ?% _9 u7 w0 L9 zif( length (item i. A1 O% g2 |2 j
[trade-record-all] of customer) > 3 )

( z* U0 w5 a- r# U4 [6 p# f7 f[
4 y& x% j7 o, M7 hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 `1 q( H9 n+ \' V3 K
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% i6 R; ~) U; C- h, j/ X[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; K# W6 T6 E4 {2 Z/ b]! C0 k# B8 `4 m( c0 M3 s6 p1 a
]5 O* N9 u% B! E0 {. f+ _6 k
set global-proportion note
, `3 D! c  x) W3 N2 y]
# \3 _# Y* N% o/ l/ o( \end9 _  V% A* R& R# b7 G' }+ g6 ^
5 B/ V' S5 B) U5 Y% ^1 f
to do-trade0 P0 p1 q- @6 L, u  p
;;
这个过程实际上是给双方作出评价的过程: i6 g5 ^1 [! z( D; ]' b7 R/ d3 b6 q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 i. H) A: D6 ?0 t8 ?! F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 G3 u# p' H# p6 I! h+ Q5 X
set trade-record-current lput(timer) trade-record-current. p. O9 l  x2 J! F! n$ U
;;
评价时间/ e7 x2 [- I6 m% t6 }( F  X
ask myself [+ L: ^8 l' \* n0 e9 M2 C
update-local-reputation' U' U2 ?* s7 W4 c  c
set trade-record-current lput([local-reputation] of myself) trade-record-current) m/ O+ s" {. o) [; V
]# q. P8 ^# I) V/ S
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- `5 Y- N+ W7 q( t. w4 x;;
将此次交易的记录加入到trade-record-one
  Q. E  {5 x% F- s% Aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), A1 \. ]6 q$ g  j& o
let note (item 2 trade-record-current )
+ v: {! z+ T: F9 f: @2 o- Gset trade-record-current
% ?/ H' h$ C8 M2 |- P1 K3 q(replace-item 2 trade-record-current (item 3 trade-record-current))
5 L  O: i. ]3 ~% M0 k7 Y
set trade-record-current
/ M& G% L& k5 ?0 {1 r' |(replace-item 3 trade-record-current note)
, S9 l) D) T* \$ }& A  ~4 y/ d3 E4 q/ F
( x" c' `, I% A+ M" C
ask customer [
* P/ v, R% F. S! r! uupdate-local-reputation+ [$ ?' D6 e4 ]4 K
set trade-record-current2 N" l% l6 `. k5 Y+ ^2 {/ n, ]) e
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, d, M! F" W% x; c
]1 N6 F3 A1 W7 I$ g7 d
0 g* I  H$ @- P1 y% ?  A
1 s( A0 \5 R! K( ?3 J& K( {; s
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; y" q6 i& Q6 E* c

3 C# G+ F2 a& h9 I2 xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' H- @) S% G8 g$ D+ Y$ C9 X. Q
;;
将此次交易的记录加入到customertrade-record-all1 [+ O' {  R4 `5 k; L6 K
end9 Y, ?; |' N# F) d7 d
( U- ^. L3 C, f7 N7 O# [
to update-local-reputation
+ }: n; v7 s) G3 v" V5 U' Eset [trade-record-one-len] of myself length [trade-record-one] of myself
/ c1 q7 Z8 n1 `. Z9 h, D" O) _& C( y& R- Z3 k( x

" |& c2 k) U2 B1 E% ];;if [trade-record-one-len] of myself > 3
0 p: ~5 }1 k) m3 J7 S
update-neighbor-total
( K% ?& y& o  L8 d;;
更新邻居节点的数目,在此进行
! Z' N0 [2 i4 H, wlet i 31 c0 n4 ]+ ^6 _
let sum-time 0( D' M* J% }: s6 E1 W
while[i < [trade-record-one-len] of myself]
3 s& z8 N1 Y& @4 H4 b) g[
0 t$ G! v8 C' oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* i) l5 s- K/ \( L! E
set i
* s7 J5 f0 |, r' }- N9 i# f( i + 1)

7 c; f5 [6 j0 l]
, H. O' }' D9 p$ vlet j 3
& s0 C* n9 l$ N+ d2 _let sum-money 0
$ h& ^: d: E; _4 B6 |5 T8 |! Ywhile[j < [trade-record-one-len] of myself]
( @) \/ V4 s$ C/ t7 z7 ?9 y[0 T" B% ]8 q% x+ o
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)) T" ?/ j9 y' v. l3 C7 @
set j" F! H. X$ N0 a% _( H# z5 r
( j + 1)
+ ^) u$ B, x+ p: ~7 L+ P8 f
]2 k* n: T, G# L
let k 34 v$ j4 n5 h. ?
let power 0- |# M2 k& r- O1 L& }
let local 0
7 b! X; ]& W9 |, N, U% R: _+ `while [k <[trade-record-one-len] of myself]
( z9 R' R8 J& k3 R[
; H0 l- N' ^8 ~+ x" Jset 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) + ^# I) [1 a$ X" R8 S# x9 ?: Z' D2 O
set k (k + 1)
- t% I/ `' M; h: Y" _* g]& c; i( \/ M7 O
set [local-reputation] of myself (local)
/ I/ M* `: n" q4 r( X1 P/ Qend
0 \) v0 R, z7 G& y, i( e# z
) f/ q# Y) G# E0 F7 t5 J& d- ~  Xto update-neighbor-total3 K- X- b: M% o* e
+ r7 Z, Y* R" k) ?  F( z
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 S) O. P" T" _' Y+ v. C
& p$ |! ~, H' ^# i0 y0 L9 }
' J4 c2 s+ ~% k
end; t) e" h4 p; R3 D  Q. }) S
5 m+ y7 L" M- z
to update-credibility-ijl
! _! u0 M- B$ l4 A# _, H
# V7 C/ X. N$ Q& A;;
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。( P7 w% d4 \6 J. A' B: O# T9 ~
let l 0
# g( A3 b5 O8 T7 C7 q! {9 xwhile[ l < people ]
) e7 R/ c8 P2 N3 b+ |;;
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
2 D$ r  D: {  n[
! u+ X, v* R6 s; N6 x! ~8 `' M4 W, Plet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( u8 |8 w4 u, U. Uif (trade-record-one-j-l-len > 3)% Q8 [+ R  V; }. u  E! P4 O
[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
/ D5 ^8 V- |( Qlet i 3
; j, T: Q4 B! i' N3 {" d  Mlet sum-time 0
) c6 a+ G: l! owhile[i < trade-record-one-len]
: I( Z" n" q" ?  {" F  ~1 A) }1 e[
4 `) e. h5 H( W* ~set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  X# h! C/ C. o  `
set i
: [; y1 X0 y4 X# a( i + 1)
- K  @# _' A! @
]+ N& D8 z7 \7 J% X/ Y
let credibility-i-j-l 01 y+ m3 u% z1 \! ~5 O
;;i
评价(jjl的评价)
8 v' I# b; T: O8 z: W  t' ?7 llet j 3
, J5 b6 }1 M0 z, C7 ]7 [! vlet k 4* o9 K1 s; r; l& x8 q
while[j < trade-record-one-len]) j5 z# }+ h5 _$ Q. @6 V1 l
[
, v. Z7 ~* d, U9 u( t" p) d* q/ 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# W1 ]; @8 ~0 D; S  C* C: E
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)* m/ G* ]% E  K, J) R5 n
set j
$ I& b, r" {3 V7 |( j + 1)

3 N# ]9 ?' C* b4 m5 H]
3 N+ [% t) a! t5 O  X: c8 qset [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; d+ K( u# R
) h# k" L  h9 o1 H3 E
& g, d/ f& s& k
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# H) M% b* t. u;;
及时更新il的评价质量的评价
) U* E# i& x2 q% }7 B  c# U% w: ~set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" ?9 b5 n3 k) L+ Cset l (l + 1)- B; \# \' G# c8 _
]
8 w. t/ N) U1 {$ o& L- Aend7 W4 Y4 I+ v, e9 W( `/ _7 p9 E

( G  y8 ]/ R7 v" B! Yto update-credibility-list
4 H2 s- ~1 f/ c0 u2 R  I! dlet i 0
( c$ }% I0 o4 H) p6 _" cwhile[i < people]
1 K+ j/ C" ?) E' |! [[
$ G2 d) T6 h1 c* n' v) u7 f' Ulet j 01 ]+ g" o, Z9 [2 }0 R9 z3 i9 a
let note 0" y% W% Y1 N, l
let k 0( s. G3 \& r9 Z
;;
计作出过评价的邻居节点的数目' x; o" C+ u  z. P$ ]) v, d
while[j < people]5 M8 a% w" i0 q, {  o
[
  R) p! p. r4 Q/ q! Oif (item j( [credibility] of turtle (i + 1)) != -1)
1 G- E2 e- \+ V/ l" v; |& i;;
判断是否给本turtle的评价质量做出过评价的节点, Y7 T- ]! t) u4 K( V: y
[set note (note + item j ([credibility]of turtle (i + 1)))
8 v3 V% T& ~+ t# {5 V' f;;*(exp (-(people - 2)))/(people - 2))]

: O5 I9 H; o' |; m1 D6 B6 r* Eset k (k + 1). o, q8 l4 l0 \7 j, `6 j0 n2 t
]
7 S: ]5 O* U2 d+ hset j (j + 1)
' T! h- Z5 ^" Z# H8 a]
0 Q" T- W7 A9 O$ G, a, Q4 l( n& Nset note (note *(exp (- (1 / k)))/ k)' R+ X2 X" G- n( [& O& w& T4 U
set credibility-list (replace-item i credibility-list note)
, \5 N6 s' v' H; b: o- J9 aset i (i + 1)
- d# o8 [( n  X" m& i& l# [4 K]/ q2 b2 V3 h6 H3 ?' t2 ?
end5 m2 T; c+ U6 X' }/ w

  [: `1 Z: c' `$ f& |8 Z+ a+ qto update-global-reputation-list* F8 F% @4 O4 e
let j 08 x" @  {9 K+ a+ ~6 L
while[j < people]
4 O6 S5 H/ _' {( X. d! q[
' ~4 G, Z9 w" h& x& D4 z. Clet new 0
  `4 h' R- R1 _/ b3 V  i3 `;;
暂存新的一个全局声誉
; I  e! K& Y' z( w9 C$ alet i 0) u* U: V. n2 u' n, J
let sum-money 0
5 q! c  F9 Y/ Mlet credibility-money 0
) @. L/ b0 u' s+ M- h8 cwhile [i < people]/ l1 p# ^5 O- }3 M% f: y
[' j* F$ D3 ]; F" u2 x
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 U4 n' j( V# w! _5 V) jset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# |0 ]( w/ s$ Z% R9 Gset i (i + 1)
/ r  s6 O# a" W* _]8 _" q8 O& C8 A% h' r; Y- ]3 O
let k 0
9 k: P" r6 A' z: d( v' Vlet new1 06 h0 t9 _5 ^4 t) o
while [k < people]
& d& Q& Y6 u! T/ y  T) D[$ w1 x$ @9 N/ g+ n' ?, `1 N, e
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)
& y4 p  N5 B% dset k (k + 1)2 c) r0 \/ ]8 ]
]8 e6 g( i2 p' `% Z' r" Y$ c' y! a1 G
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 g9 d  M; I$ A
set global-reputation-list (replace-item j global-reputation-list new)
4 _, N: i: w% @: l/ n1 xset j (j + 1)
4 q+ a% k8 f1 d* l8 T]
7 A; {/ [# P+ I# m, a4 Gend
6 B9 G+ R+ x7 w9 `  ~
+ K! u0 X$ D$ J$ \
+ b7 a+ O) ?2 T) B* J4 c
( H! }$ L+ T2 S8 Jto get-color
& V! d/ a7 w6 G$ m; U7 ~3 v
* ^' U' E6 L* B& K1 K9 D$ k1 y6 T/ kset color blue
. m; y5 F0 b5 U% Q' C# q
end- x: `: C" G! e3 p; d6 p

: X0 H8 [6 s& W- d8 Z0 Nto poll-class3 F0 |) _2 H# Q& X$ u* o" @
end
/ G5 }8 l# S' [, S, R6 [- B
- E" d; a7 O7 n& ato setup-plot1
7 \% |9 L" V! `8 K7 }: g2 k
+ \9 C* M* X1 l1 S% {& hset-current-plot "Trends-of-Local-reputation"

3 x& X7 s6 m5 P* c0 K4 Q5 D" J7 l) h- V' c) [* n: d6 U
set-plot-x-range 0 xmax

4 ?3 Y& N& ~/ g2 S& y( p8 G! V/ m9 o( k5 j6 {% ~  S7 v
set-plot-y-range 0.0 ymax

. a- |% J, V6 d0 y% J6 iend
' D4 x! j/ _4 ^1 ?+ Q4 a
  \: P* U) t; r, [8 }5 a- u) d# Vto setup-plot2) U' C% ?) R; P) Y+ c

$ d4 c* {- o+ g9 e# Pset-current-plot "Trends-of-global-reputation"
# s8 ^; j5 k* C. f5 q9 D
* S5 b& V. B+ w4 o" D
set-plot-x-range 0 xmax

6 x1 I$ h* @5 W: P9 P
4 V& R' o4 T! wset-plot-y-range 0.0 ymax
6 {$ @' _/ _# C# P- U, O" ~
end
; W* o* l, d2 _
( G& f" K. H& N) d" pto setup-plot3; U- t# d( E  U) R! e8 ?
% J' p! N2 q4 e! A
set-current-plot "Trends-of-credibility"

* @, y. k" U, ?  z' J
! {9 A1 m8 Z8 pset-plot-x-range 0 xmax
7 P9 B, m$ C& Z8 I
7 |8 i$ g2 W2 c5 e+ a# u! h9 Q
set-plot-y-range 0.0 ymax

" d9 X/ O7 {( D  f4 s& Fend, ?! e) p* B1 d  }
) }- Q0 B2 @- Y6 N* X! {0 Y
to do-plots, O; U+ ]' P' |; {
set-current-plot "Trends-of-Local-reputation"' U( n2 s) s9 ~$ Y
set-current-plot-pen "Honest service"
. X) z9 O2 h* I3 g& V7 mend
3 u3 g% e5 q# A9 v3 y
# x5 q( c, x6 P  l) r# Z& c! v[ 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.
2 Z# }& u! z7 S+ s& {  o( ?! k' S9 X( K! O
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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