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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:
* @8 o: T7 z7 G: wto do-business - `0 D7 r; h5 D* @3 r$ S- J
rt random 360
! l/ M1 z  t7 }3 j8 ?  ` fd 1) h% [# V* m) J7 V
ifelse(other turtles-here != nobody)[
- b& S; {  I- T4 V9 a   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.
* u9 m( w, S% K  T   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( E6 i. f7 P7 e+ x- i  o" x& M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! {" M2 M( l. E6 X" C, h4 |   set [trade-record-one-len] of self length [trade-record-one] of self1 p3 M0 N5 I8 W" Z
   set trade-record-current( list (timer) (random money-upper-limit))6 Q0 x$ ~. Y4 Y8 h" G
: f2 h  b0 `; b# U3 J
问题的提示如下:5 z4 K  W1 ~/ p& h3 m1 i2 p

# K: ]; p1 v: [3 s$ r3 p) r: Uerror while turtle 50 running OF in procedure DO-BUSINESS; r; q. n+ R0 d$ C/ F; I/ ~
  called by procedure GO8 w  X# ^' u" u0 @( R# d9 i( d
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 a  s7 m8 K9 d& Q3 V) O
(halted running of go)
  e( i1 L. X# c
) d9 `5 z: y1 s1 j* ^0 s; y! C6 }6 h8 ^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~~
  f5 x4 l* ?* r7 k; H' k3 d0 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
6 t7 R" o7 e7 c0 kglobals[$ ?: A" V1 z1 |8 ^( \* i/ h
xmax2 E! g. \) e( F2 v' p
ymax
" @+ u% D( V  p2 |9 M+ {global-reputation-list
6 K$ h, I& n$ _6 S& ]( [* p
2 F+ q2 |* ]# v2 \8 `1 V;;
每一个turtle的全局声誉都存在此LIST5 ^/ J' e* S* G" P
credibility-list/ r: G! Z+ r1 q  i+ f7 K: e! _5 L+ f
;;
每一个turtle的评价可信度
- @5 f& J: a$ g% {5 {; Thonest-service/ b) X* A: A5 E, {
unhonest-service+ t/ Z" R9 Z: ]* d' G! |6 B( E
oscillation( n# }+ y9 X7 N+ q# a/ ^$ d
rand-dynamic( a% H) `8 f! w& E$ p$ c! A( [
]
) E$ G8 |0 W* t7 A
: A, g7 z* {; Q- Yturtles-own[# e! I; b+ F) W
trade-record-all
) k2 _4 T  b4 D7 k( E  a;;a list of lists,
trade-record-one组成) w) a9 F: `  ?
trade-record-one
2 a! p/ V7 M. R0 r. o: B6 g5 v;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( p4 g* X# p) X4 J! n
: f: S; t$ [1 X
;;[
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]]
" k4 z( b6 G0 H2 U1 l' x+ ]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]/ w& E* t) q4 ~% w" @2 D# \1 B( U
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
# R) a& M3 }5 s  x" X8 g; T3 Rneighbor-total' m6 l/ W0 v" r
;;
记录该turtle的邻居节点的数目. u6 A% S! y7 ?3 d* F+ L
trade-time
6 n; Q' L  [7 z;;
当前发生交易的turtle的交易时间( {) }$ ~9 J- |. {) A6 o6 Q
appraise-give0 p# J6 G# L8 Z! j9 x' V
;;
当前发生交易时给出的评价8 C8 Z: H, R7 o3 e) ?* X
appraise-receive
: b! M1 s4 b* s2 o% w- D: ~( s;;
当前发生交易时收到的评价
0 R9 r7 h! S- v2 [% Z3 _0 j+ yappraise-time3 R+ a: s' H6 _1 i. h% }3 p0 l! Y
;;
当前发生交易时的评价时间, L! B' X. Y2 X, h3 A- v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 v, O/ {, N* S! z4 |4 O5 l7 atrade-times-total
0 Q; D+ x, ~- h9 K9 H* x;;
与当前turtle的交易总次数
3 z" T1 B2 g5 I3 n# ?. Utrade-money-total4 o+ J, b2 I2 F0 z. E& W0 B8 h& T+ L
;;
与当前turtle的交易总金额
  [8 ^' v6 P$ B, l  H$ O9 h* F/ Xlocal-reputation. L! G+ E# |7 w
global-reputation4 c, B' s) P. d) R- N( o
credibility
& m4 t- W4 _- E9 g1 O' @;;
评价可信度,每次交易后都需要更新# q# [4 s; p; z6 S3 F% b
credibility-all  s. |9 j6 _3 h
;;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
6 |/ D4 }; S5 E* P; D! H
; |5 t& o" D: I: K;;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
6 b- l* `+ h( f. }credibility-one
, f" u5 M) w) `- s( \3 m5 r  h;;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
! b! M2 l" t% u; Aglobal-proportion, ]" L; j- o8 O, Q' h* D
customer4 E. E* l) j7 j# r# C$ ]# r  f
customer-no9 n- F7 q+ m  F! C/ V( Z$ L! N: f
trust-ok* s: T$ u0 u: A& t
trade-record-one-len;;trade-record-one的长度
4 I! q! n# N- F1 L) g: z]
) A# o! N- }  e8 Z9 I  D2 N5 l0 ~# u+ F- e1 t( J9 ?+ i
;;setup procedure9 u- F' M" G4 ^! [( y3 e: M

7 Q+ X/ \- i6 f1 t) l! Wto setup
# b8 \$ {- K. h* ~0 I) y9 Y
0 y( y& M5 B' @" O9 mca

- Y7 K" A3 h4 |' H7 y
* g! ~4 v8 b8 iinitialize-settings
# M. P; A" t* [

; o! S6 R, y+ `% }. N4 {3 Gcrt people [setup-turtles]

% z- V- F# {4 z* F
* k2 |: B3 `: m) v& H$ D* a$ f: r% Zreset-timer
/ e% E1 A, |" i% k8 F

% h8 [$ L, [# mpoll-class

7 a* i' a6 Z) ~+ H: t' s
- v* N7 V, ~% G8 d$ w6 J- Ssetup-plots
: L# h4 i& A; Y  Q( h0 s$ ~5 y

$ N9 w; e3 j8 y  M- K7 b  vdo-plots

6 j/ A& L: \9 G( q5 ?( @end
$ i2 Q0 u7 ~# M# o- W2 \+ T
% y+ q2 r2 n* M/ z3 x4 Ito initialize-settings* z7 G6 d) _; R- f
: E$ _8 v; D4 u, a* W# r
set global-reputation-list []

  q7 T" V; U& `# B. }- m  e$ e) Q5 J% M. W- o
set credibility-list n-values people [0.5]

1 e; y6 N) Y8 {; |+ b7 y+ S7 k; \8 K/ l6 u& G7 O) K- ]
set honest-service 0
/ b; c2 a# a$ m
7 }& Q3 H& G0 \
set unhonest-service 0

2 x2 l8 _+ Z% y: n( |; t  z! o6 F( @, }7 f! b4 `5 @4 j
set oscillation 0
9 ?9 H) L, E# a2 v0 @4 |5 i  A" y" _- w
. r0 S8 t0 o+ `8 K+ U, O/ p
set rand-dynamic 0

" ?9 T" }7 t) e& d1 y8 ~5 R: tend4 e+ W* Y+ ~; N8 O

" h7 x8 e& E, [/ D7 O) Yto setup-turtles
: W9 Z: d. r. S1 N. I4 }7 P1 m) i/ Vset shape "person"
1 G7 Z3 X* m" csetxy random-xcor random-ycor
3 e& j% w4 x& d0 b+ uset trade-record-one []6 |* d8 m& z" R8 H. `) |9 O, c
2 |& i0 o9 P6 @; O5 p
set trade-record-all n-values people [(list (? + 1) 0 0)]
1 j# i3 o% G  _* @6 J5 D9 B4 ~, F/ R
( o% u8 o& g6 u$ a
set trade-record-current []
1 z6 `: g6 T3 ^+ {3 M5 Z7 \  ^4 Lset credibility-receive []( C2 `/ c' l% H  v" x
set local-reputation 0.5- u0 J# U# c& |: N/ u
set neighbor-total 0
( H4 U- P  N( Kset trade-times-total 0
; I' Y5 S2 }6 g. D( L  {; o  x  Fset trade-money-total 0
9 Z1 [8 Q, h) ?$ ~  {3 ^/ oset customer nobody
& j8 E; t# O* M, ]0 L; Uset credibility-all n-values people [creat-credibility]/ Z0 m3 u" f) T9 {
set credibility n-values people [-1]
: I- I- F, d) {$ ^! |0 f7 Jget-color
/ `1 c0 D+ x6 G$ j5 q* |
/ c9 A  f# N( c7 C- v
end0 _+ }- v& V# B3 _/ W
0 [+ C. Z8 Q$ j% z" P7 s  K! c3 {4 s
to-report creat-credibility5 j( R/ S8 {1 h/ r: |
report n-values people [0.5]
- U0 D7 X% Y. {  J* W1 R6 Xend
7 E7 p  y5 v. K( H  E* y8 c6 ^' a2 Z+ n
to setup-plots
" I4 y. f$ C) P, _; S5 O9 U+ p1 _4 z( k% M
set xmax 30

/ m( Y( h+ z( s0 A
; G( S( T; T8 B$ Q0 j1 ?set ymax 1.0

0 U3 `& j6 T; N5 t9 t2 `) \. |" Z7 Z
clear-all-plots

$ I# M  O* X' G% `2 Q# j/ @
( |2 {5 D9 V3 [* j5 |setup-plot1

  F2 e* M4 v- e3 _# W# A" S$ J5 u: D3 c/ v$ T: h. J$ d
setup-plot2
3 `# h. W2 ~. u) _9 m: P, w
  d* x  I8 Z& u& o
setup-plot3
' E# `: \  n  q# b) _
end& k1 O8 ^8 v  ]1 B) Y2 p9 w  X

4 [) ?7 N# G8 P! ?6 f; C1 r;;run time procedures( e% Y: M+ t2 U, P: w# t) y+ e
8 M' D9 @, L# q) t  S3 {
to go9 z' p: S& n* W" u3 l; k

/ w9 K+ a  c" _" ?0 ^0 h  task turtles [do-business]
! H) F1 {$ N  z/ a
end$ D: l; L$ E1 r5 h0 ?* h

; |4 w' l8 E" R3 a- z( i- eto do-business & U& @  K# f8 e# {* l8 ]

* p8 k0 Q' |3 ^9 v8 s$ R9 d* K- Y& x( `; e" s7 C2 L4 v
rt random 360

# z  l. u7 P, T, c! Q& |, p7 B2 A& y4 e9 i& U( G
fd 1
% K9 |6 I3 H5 I4 q, S9 \2 u- ^
7 P' A' W1 \8 n. _5 d
ifelse(other turtles-here != nobody)[

$ C% E9 s! y' F+ J! T
" Y- s1 D2 [3 x" s( Hset customer one-of other turtles-here
5 C; W/ n, z) ]9 d0 N# a
7 ]: k. a4 {6 b7 N' P
;; set [customer] of customer myself

$ N& W* w: q( D- M5 L/ X7 T7 ]; K% \3 d" Z, m- [- \
set [trade-record-one] of self item (([who] of customer) - 1)
" M: Q+ @# U4 L7 }$ W$ |[trade-record-all]of self
" k* [( u/ O1 b/ f/ H;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 C* J+ y$ v7 C# I( Q" U; u- L, O0 p$ C6 J
set [trade-record-one] of customer item (([who] of self) - 1)
* F0 X' X% J& V4 ~[trade-record-all]of customer
8 q! I, o# {' B/ U! f
$ }; V, X) D; W9 K* w' R; {* b
set [trade-record-one-len] of self length [trade-record-one] of self

- T; r: b  T) |
6 D% z' L4 a$ o& _set trade-record-current( list (timer) (random money-upper-limit))

- X* z% X" r; c$ j% f+ j7 u" Y+ T& ?
ask self [do-trust]! L  g3 E. u. W' z  ]% W9 s
;;
先求ij的信任度
2 m# L; K/ R8 [0 c, N5 N" [8 P, E0 c& m# ^& h( u
if ([trust-ok] of self)
2 v6 B  V& ~: L  |;;
根据ij的信任度来决定是否与j进行交易[; A) O/ k% a3 s( ~  d2 M* U( h7 M4 o
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ K! g5 i5 w( h9 B, R
1 S0 }; m* q( l[

) t: w2 @3 A+ Y1 q: B
, j0 L+ L! @. F) ]; `. Ddo-trade
5 o) x% f$ Q. h1 |- ~. w1 J
! M8 Y$ g4 b8 F( L; i! G4 R
update-credibility-ijl
3 `" U  O5 g/ J/ k# K: Q) F

* C9 @3 O: |& Wupdate-credibility-list8 l3 @7 r) e* d# C! S

; p8 G* x: p: ^% z
- R+ K0 U1 {8 k0 C% L" |& Z9 T: Wupdate-global-reputation-list

; Y0 u; j& G- |# i- V) y
1 F( V4 r+ R! N' `: e+ l2 l- Vpoll-class
: F; [3 o6 c, j* q% ]1 V7 I2 }

: Y4 Q% f$ B5 l" |7 ?get-color
+ `& ?1 X5 |. z! n' X1 @

+ W7 ]0 k; i1 f0 M$ K2 L]]( {: B) B7 o8 O

- }% g7 c; K1 J- ?- A. ?) o+ |5 c;;
如果所得的信任度满足条件,则进行交易
1 h& D. P; F8 u& c; \% p% Z: e& U
1 E; p! P# }7 ?$ U! b. ~! q[

3 [+ ~& J2 G8 R8 y) O4 K2 Y0 o+ X) G# Q5 y, v2 ~5 H; V5 w
rt random 360
0 T, v' x$ J  E/ `2 k1 @  ~' l, U

1 T, K, `* O6 B* p$ jfd 1
* n2 D  O( A. O9 F) R

/ p) H1 u7 u8 s9 c: V8 H# b]

8 M+ O' I/ V- ^- c3 X
$ L. @3 B6 l% w, D; a8 n* Zend

. o4 _! d3 L: E7 M; k, z/ f, S- o- B2 p# ^9 g9 m. c' N* j1 W
to do-trust # f8 g3 Y4 I4 j& w
set trust-ok False
7 x8 g( M5 Q5 D& o- f
) s- R# j" K) G( v- ~1 \* c

( \  N8 z' T! `' x" `3 w* ?6 Clet max-trade-times 0; ^) ]$ L* ~6 X
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: k/ M* M8 j4 |2 olet max-trade-money 0; s0 s  S- f3 P1 W& q' ?
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 j! g% f4 `$ p) c
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  M# G3 J+ Y$ j! [( P' `$ W+ r
4 l9 b* j. b/ Y, Q/ m6 D$ i: g

4 A9 f3 `  U1 U% Q0 Aget-global-proportion+ q( X  O" C+ v6 n8 b
let trust-value
7 k1 G: i7 Q% m! Q2 @5 d, P0 @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)

" v3 _( M: B& c# q( w/ {! iif(trust-value > trade-trust-value)
  d3 Y- ^, |. T" X$ i* J$ O[set trust-ok true]# G0 K6 s  _( m0 O
end
2 [' ^" N2 T: r. \* X# l& o9 T$ {  _/ o
to get-global-proportion' W: j! B0 {3 m3 x1 ^" C( ?
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% o" n/ w; K- a+ Z8 s1 o[set global-proportion 0]
4 P! I7 Y8 D6 y# _: O[let i 0
$ \' W2 ^0 I8 {4 r# _. Q4 U3 C$ Xlet sum-money 0$ v$ d) j, |' G4 p8 G$ t
while[ i < people]7 ?) l# `0 W) n$ l- T. g. G4 t; u
[) \1 O! r% [0 A1 a! T
if( length (item i6 B. V2 a# |0 j5 v) X3 h7 A
[trade-record-all] of customer) > 3 )

2 |0 x6 r3 R, M9 h$ ^5 ^: _[; G1 M- f% M$ ^# Y1 Y; }4 o
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ `$ Q# {4 f0 B]7 z7 x% ]3 g& v# P1 H( _" x
]
: ?. j# y# I8 v6 klet j 0
; ~- I; f6 A" c+ k3 \! o, Xlet note 0' p( R, ]- t3 e* ^+ E
while[ j < people]
- t+ L1 E8 b! C6 F, o4 t& n[/ c+ H# ]; G" V! O
if( length (item i
" o6 n( W: z1 O9 ^6 `; U1 d' B0 `[trade-record-all] of customer) > 3 )

5 E0 t  ]; v4 Y[
0 ~3 J! ]# j) X$ r! P) {% Q5 Tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ ]* f- c) M) d" M: L7 o8 o: l+ I% R
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) t" K& D( R# P# n$ T[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, M" H' M' C+ \3 {) y]# K  f$ \& i# o( d" q2 I% _
]
6 N! E- ]5 {8 J: h. Cset global-proportion note
4 U. h! K' e6 \! ~1 w6 V]6 j+ D% T  l& Q
end. O! C, r  M$ M" d" z
* k5 ?9 R6 n& B5 K% k. K* Y$ J
to do-trade
& A3 n3 Q; y, C: e;;
这个过程实际上是给双方作出评价的过程
; ~. N- V* z* E1 x: s( K# e/ E( Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 G# K* L8 H" Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& y1 z; C9 Y5 `2 r. Y: r6 R% w
set trade-record-current lput(timer) trade-record-current
0 |1 r/ O! H, m0 Y5 J;;
评价时间
3 L: q9 g4 R5 z& ]- S5 f8 g# Kask myself [
0 B( o: `" B/ l3 Zupdate-local-reputation3 [$ k+ G+ h4 A' W* e# S: P
set trade-record-current lput([local-reputation] of myself) trade-record-current' Z. F) m  ~; D0 ~
]
, v5 R$ G* o. }2 ?* Bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% ^" t0 e# W" f- Z( d( @% y5 v, S
;;
将此次交易的记录加入到trade-record-one
, S$ K, Y- r* Y& J" k' cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): j7 @" J8 `0 Q+ {+ B2 X
let note (item 2 trade-record-current )
& P1 m, k: N5 }( }/ Xset trade-record-current4 R* P5 Q* T+ v; _- b
(replace-item 2 trade-record-current (item 3 trade-record-current))
; C* ?5 M7 B7 Z- T6 [# e( v
set trade-record-current
/ O! _. D3 e. M& E6 Y+ [(replace-item 3 trade-record-current note)1 Z0 ?7 u0 Q1 \

, d; Y  g5 _! _7 Q4 _
( n  \9 K" e6 j1 o
ask customer [9 \! {$ Q8 \% e( b3 r% E
update-local-reputation
8 ^, S; ^, A" m1 R& l9 Gset trade-record-current% V1 X1 u. D! p
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 O6 `8 |+ F6 Y9 o# n
]
, l  ?: M) \  T) V
, S, I; V, k* q# Q* u
# m/ P) o4 |$ Q1 e5 l3 g* n4 s
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- ^$ `% i2 B  ]
3 w  \! R+ ^' t
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" M' h; Y, R) B; c9 j6 w6 b" I
;;
将此次交易的记录加入到customertrade-record-all
" C+ L; `- U: t4 qend3 I# U$ y) J& J  s4 k# W1 r
9 e0 F" J1 H- B' X1 @' T
to update-local-reputation
: e" T- Y7 Y; h& s6 F5 Hset [trade-record-one-len] of myself length [trade-record-one] of myself
! s! }' z! N4 N8 L
  q$ P6 Z' u& F# A% f+ V- F( l) X2 W! B% B3 j1 B8 N
;;if [trade-record-one-len] of myself > 3

. q, A5 s+ [" uupdate-neighbor-total& y4 k6 `/ u8 n5 a! O1 |$ X; j- v
;;
更新邻居节点的数目,在此进行
' ?% e* \  y: m3 J/ ^let i 3
4 t: c2 A% ]* nlet sum-time 0) |8 w" t& B' T- \
while[i < [trade-record-one-len] of myself]& }' d" Q2 f$ A: m" z
[
5 l  e5 H8 P' T6 j& oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# z$ n" |, d2 B, f4 u5 y& \
set i! ~! ^' a1 h/ I  p) K( H2 v
( i + 1)
$ t+ Z3 v- h9 o$ M5 I
]
- K  D4 ^. k- G, O9 llet j 3. }, `+ G  W* @' u
let sum-money 0
; S8 W: m7 a+ \0 y. z$ @$ Cwhile[j < [trade-record-one-len] of myself]
9 N0 P* G6 J/ n9 O+ d9 ~2 B[
" V* C1 E; y3 _) f( U; C1 eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)& q9 K2 C" p& u
set j
7 W+ A+ b8 W+ d6 o' X, e% o( j + 1)
, Q  l8 g7 G) h* x- l
]
: n% Q/ |3 M" O/ M! T( Alet k 3
9 h( v! k- o$ ^* X' P8 Z+ xlet power 0, ~  X9 ?6 D0 l% P! W0 f
let local 0: h2 b' z4 T7 d
while [k <[trade-record-one-len] of myself]
: ~4 F/ [( C2 ^% [  }& t% C5 \[, P& I9 F) e( D7 q# K
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)
1 X) W4 ~6 L0 Z( dset k (k + 1)& R/ s# M! f! T$ J
]' ^& @- M( N, P  s: d( f' r
set [local-reputation] of myself (local)
* \$ Y+ V: }# `  @end
- R. v) ^0 a0 H) X
( e! R9 Q3 n5 g! u) fto update-neighbor-total: m: o& O- s( c9 d

% s, P: ?' J$ Nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! F+ ^0 X4 P  l  l9 B  @6 F$ [0 G) L9 W4 Y

" O% |3 r* q+ b, r) gend
2 J& S" H  [$ |! Y% P: c
  L  m) c, W5 }- L4 d- Pto update-credibility-ijl
( u2 M' S) L0 y3 x# Y: v& w* B4 S( L$ K
;;
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。, A  P4 Y6 p& \  g( S- {
let l 0# E+ o: G; G- |) |- v4 ^0 h
while[ l < people ]' _- [6 N2 Q* i9 ~
;;
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5 j2 j, O% i; a7 q  p
[
- o5 g2 l/ W! N6 d$ `* U* T8 Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) F7 {& B8 X" ~6 {if (trade-record-one-j-l-len > 3)
& F/ V* d( ^5 s; _* @0 T[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
1 _9 U/ ?, z$ O# F! y0 W4 g8 o) mlet i 3
1 a: q. y# A/ G* ]. mlet sum-time 0+ T) R2 `0 F9 B
while[i < trade-record-one-len]
! D& S+ Y* t8 S[8 x4 C1 {) ^" k% [0 y+ B
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 q5 v* ~+ w# T3 b* P8 Iset i
3 P, [4 k# S& f( r( i + 1)

  x% I$ m. j2 Z: T+ S' z]
" q0 F- k# c1 h2 e/ Clet credibility-i-j-l 0
8 I! c; E: @. J) q' l;;i
评价(jjl的评价)* _3 \1 `% ^7 _. y4 Y6 K; E* L
let j 3
0 E6 d6 w3 @+ G, }6 D$ x3 U. Vlet k 4
* p5 X6 @- G5 i" @while[j < trade-record-one-len]8 d. G( j7 y2 h  r1 W6 c
[
/ O& e" T$ J' e' V) kwhile [((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) v& P) Q! l, J$ ~/ R7 Z# m
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): x! b# n$ v3 v; B( y
set j+ Z* B# B& @0 N/ Z- I
( j + 1)
  Y9 L& w+ c9 d4 u# D$ G
]. E2 M' r! w1 ]* E3 o2 Y9 Y
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 ))! l" k% p4 H( X0 J+ Z. l

% _# P, i3 X1 [4 `
+ H2 E7 h5 X" c# N/ k) i3 m" ~" C
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 j+ {- K: A7 u- V
;;
及时更新il的评价质量的评价
1 C5 L8 t; D- Gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
6 L. l' T7 N2 C: ~/ o9 F( h: Sset l (l + 1)% g0 K# Z  a& E/ }. }4 @5 g5 U  U
]* z! j5 ^- p: F4 \! P1 a
end6 _( Q& g3 ?& V0 ]
. t, ?2 b- U+ E( t$ J2 {
to update-credibility-list, k- A+ |4 [. b" W
let i 09 r# Z( E% O& T) H, A: N
while[i < people]0 Q" G; f( j, m5 p  O* Z$ [( {4 H; N
[
4 _, u5 m7 t% Slet j 0
& ~) ^" ?9 ]6 E/ F1 Z2 R6 Mlet note 0
! ]- m4 @2 p* r5 B* @. \let k 03 M3 J7 o% _( |; c5 y
;;
计作出过评价的邻居节点的数目
  @) `; E1 M6 }% ~( cwhile[j < people]
, q9 U4 a. l4 J5 \4 V$ c4 d[. s5 V! ~& D9 Z( C5 @
if (item j( [credibility] of turtle (i + 1)) != -1)0 Z+ {% v$ q" F% o% b
;;
判断是否给本turtle的评价质量做出过评价的节点1 E7 m/ J( q8 c
[set note (note + item j ([credibility]of turtle (i + 1)))
" g- D% L3 J8 F: e3 W: L( y;;*(exp (-(people - 2)))/(people - 2))]
/ l5 {- q6 ^2 l% J
set k (k + 1)
& h# X* u8 F" k' ~7 n9 s]# G& P4 X. Y( w. K! k8 w9 ^
set j (j + 1)" S" b  q1 A4 P/ ^3 [; W9 z
]
2 ?! B5 [2 J) v, t6 l) P" {+ ^set note (note *(exp (- (1 / k)))/ k)
/ ], F# J+ H/ H' ~$ Gset credibility-list (replace-item i credibility-list note)
# f! g0 Z6 L" L; Y- qset i (i + 1)- t6 ^6 {" y% d1 B6 d* _7 o$ j
]
- O4 _7 w' _+ _# [! ]# U: Uend
  ?, k2 f9 x( a+ V- \( n1 P6 W/ r# `8 Z. b
to update-global-reputation-list
2 W- v5 \$ @7 J0 [+ Llet j 0
/ p( l2 B  {. e0 _4 W  Cwhile[j < people]4 V, Y4 M) t: ^3 Q; B2 B: r4 @
[
: y. Z1 B* n* `* ?  nlet new 0! ]2 ?8 T$ C, H$ d% \4 ^5 X* J) L& O
;;
暂存新的一个全局声誉, c* m- ]; e3 v2 y
let i 0
  R7 [$ i3 _$ ^/ F& W1 }" L8 clet sum-money 0# Z* K( g& m# t$ N$ H9 h0 H
let credibility-money 06 z9 Y$ `  B" k# k7 d$ o6 D
while [i < people]
1 e# `. Q( A5 m# n! Z; E[
7 h4 Y3 B- m0 q$ D9 wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  U  A/ S* w7 Y9 v! _; |8 }4 |
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 Y4 x& q! b9 S$ D) b. U, ~set i (i + 1); _" ]. e5 m% U, m1 Z' a4 o
]
8 i( G- d* U4 p* [. ^3 tlet k 09 j6 i( g% A! @: ]. [
let new1 06 w6 Y% a+ I  [$ O3 I
while [k < people]
  I2 k  k- o. B8 p/ u[
2 X: a/ L. n8 N$ W4 _; F+ w1 ]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)
, d( }8 d  P8 K" @2 I: Aset k (k + 1)
- e3 I& V2 d$ g" I2 j8 n4 w]' n+ x/ g7 O  k4 C8 p0 q$ }
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# n7 E* P1 B7 A' s% T) k, lset global-reputation-list (replace-item j global-reputation-list new)
* N/ t1 D6 P, X- W2 I! Yset j (j + 1)
- p; J$ ]& Y* a  M]; O3 r2 N2 N7 r, A( {1 Y8 f
end+ n- Q$ V2 l9 u  p6 Y
3 `! F: p: t3 {5 p; D; W, @8 k
2 i: u# M4 \& ?: t

* ?: x$ T) s) x1 [9 @+ ~to get-color2 x' j+ V! A* R6 ^: q; O
1 ]0 Y* e! j" H8 ]) y2 |2 K$ V1 P
set color blue

& z" y9 f2 J" e& n5 G3 s5 |end! Q0 ]& e5 ]" z

# c+ w$ ~3 V& m2 p. c5 lto poll-class
! d% k! Q9 d) S2 a6 c; ?end
/ {% @7 |0 e. ?/ [) i. {0 F8 Y3 E! Y$ `( Z; ]
to setup-plot1+ L/ ?# y+ o7 _

5 O* f  i6 A$ o' x5 r# p) [set-current-plot "Trends-of-Local-reputation"

5 A3 N5 r2 V% q( V
" }7 [4 b. Z. {* ]  o' Gset-plot-x-range 0 xmax

  a( j, R& M, l4 c5 n# O8 W
7 m- D) E4 ]; D# w( D& K8 e0 ~set-plot-y-range 0.0 ymax

  V0 k1 E. m& G' h' ]! Bend6 c; s6 a# O3 U' e1 H8 g

7 M# j7 \0 J" E5 _$ `, m6 p2 B: U! s; mto setup-plot2
# t; @1 g0 {2 o: E) x0 E$ J9 L9 v1 N* Z; D& D
' z8 `2 h$ N7 Z% f7 ^9 p4 ~set-current-plot "Trends-of-global-reputation"
+ Z' U' v* G5 g" S! B
! q( ^. B% ~3 ^  C0 ]8 p2 _& g
set-plot-x-range 0 xmax

! O* u7 N& x. m1 M& l$ C$ c# A9 W* {# @* l/ e
set-plot-y-range 0.0 ymax

6 E+ j) W. `3 l% N; v- |+ T" ]8 cend$ L) w, u0 R' h( B$ \0 ~$ [0 I+ l! K0 \

$ E$ x: m+ J$ b0 N, sto setup-plot3* O, a) l3 K3 ?! R; o
7 H5 J( R+ P0 V  w% `+ n
set-current-plot "Trends-of-credibility"

& p/ e3 P# a& L5 B3 O/ s* ?5 `0 Z. ?: Q% M$ H; ?
set-plot-x-range 0 xmax
' e  O8 k( m* K* G
* Q3 ], D) l9 p! I: a5 r
set-plot-y-range 0.0 ymax
4 ~# |( e, g$ v  _
end
! y8 l1 l! T; w( `( `1 O8 e5 A( H. C& V
to do-plots& r5 b+ R6 ^- F2 q, ^
set-current-plot "Trends-of-Local-reputation"
) A6 X& n" y1 r! Q( X, J- {set-current-plot-pen "Honest service"# s# J4 _% @% c. `6 {
end( Q& i- q2 v+ ]7 i

5 W5 A& a4 k2 G[ 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.# J) z4 b' g# z
) m. A  J; K8 T4 p
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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