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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:
+ M9 q1 y9 N  k, o' @+ }to do-business
# ~% N* Z! v2 U" P rt random 360' N/ v+ R4 X! e6 C5 Y" Y; `3 s7 e
fd 16 i& d/ v5 |. N1 U) M6 h
ifelse(other turtles-here != nobody)[2 ?! {' ?& Y% I( e/ c3 b# W
   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.
; A, x; p, v' I% l; h& x   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 |% |5 Z2 S6 `- g  h   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 [3 s/ E" p" r. J; Y2 j   set [trade-record-one-len] of self length [trade-record-one] of self/ D9 F: Q2 f0 {, U2 `" D) X/ B
   set trade-record-current( list (timer) (random money-upper-limit))
" ]' i* g) P% |' R5 a) u1 V8 D5 g* }+ e
问题的提示如下:. `% O* }) w5 T/ B( V7 |
' t, @" S5 K+ M5 J2 |) g
error while turtle 50 running OF in procedure DO-BUSINESS
2 P7 Q+ D' h3 C+ Z) @  called by procedure GO; S7 j- s7 d5 `' u" I8 ]/ }! w2 G
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; t2 d+ C" N- X) O2 F8 A5 j
(halted running of go)0 i% X8 ^5 z; ?% L  X
/ K& Q+ ?( a" l: ]+ O$ G/ ~
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~~
9 I! _3 C+ j; g6 _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
( s6 h6 t+ l, D! w: |) Uglobals[( w& A) \/ U' @0 c8 v
xmax4 Q6 u+ R6 p" a
ymax) m! q" H. E0 l6 y: N+ E* {$ t
global-reputation-list
, k2 M, }  Q; d( ^/ ?6 F7 t7 |8 [8 t* M! H7 ?( ?
;;
每一个turtle的全局声誉都存在此LIST' Z! S- l2 Y. j
credibility-list7 D: I, f" F5 X
;;
每一个turtle的评价可信度* }! U: x6 x2 t" j1 y
honest-service3 t* @* C" X9 Z) n4 \; j' l$ `" G
unhonest-service( }" D; y- _* N* ?# r3 f
oscillation! ]' ]+ h; |, @* d8 C5 c
rand-dynamic
. O0 {) Q( }- F0 G' m]. G# F* B. f& _. ^* W1 b
: }4 b& e- r" }1 K/ f& v2 s
turtles-own[& ?  s* O  A; H( {5 w
trade-record-all& t* p3 b( U) i7 D5 T5 N7 n
;;a list of lists,
trade-record-one组成1 ~' c& S  }) c
trade-record-one
9 M) Y; r% P% N+ y& E;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# }+ R; p4 m3 h. I/ C

2 B$ Y% S, A+ D2 J;;[
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]]* @/ @0 O0 u9 h2 I3 P
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 C* G) W$ {9 u1 y9 t% ucredibility-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
3 d, ]" r, }( G' B& ?+ [neighbor-total
6 [" g8 E. U! X8 s;;
记录该turtle的邻居节点的数目, m7 f! R6 w3 z% A+ o# S
trade-time5 \6 s5 a, K: h) z- J/ I- d9 q
;;
当前发生交易的turtle的交易时间
9 D& [% ?$ G( O5 N+ f' aappraise-give
3 r* Z( j3 `3 h' t$ S;;
当前发生交易时给出的评价
2 E; \/ B, h3 Z& u# I/ `4 vappraise-receive9 W/ _" Z  v) g: T
;;
当前发生交易时收到的评价" W* k8 X. S4 f3 J
appraise-time
+ x# W4 O( V1 G+ [;;
当前发生交易时的评价时间
! v+ z- [3 V( s2 j  ~local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ o5 }: R1 N2 z3 d  b- ytrade-times-total
2 j7 q5 L. E6 C, v" u- Y/ A& P;;
与当前turtle的交易总次数
5 b2 a0 d& }* m+ |8 @trade-money-total+ T9 K" q: K: r) |: ]5 y
;;
与当前turtle的交易总金额/ `9 k" Z- E* E" C: ?3 Q$ }; d9 ~) L
local-reputation
+ L  H, u, w% n6 o! w, sglobal-reputation
9 Q# M" d$ G9 H* ~6 z! L4 b. Bcredibility9 ~% d) u1 n) Z  {. i
;;
评价可信度,每次交易后都需要更新+ G9 V  l8 h6 a+ |( z
credibility-all  ?% q' @6 k6 Y9 W
;;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- S" f7 H0 k& p2 r2 D, c! P
0 a. m, k0 |2 L6 ]! Z( [
;;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: c8 s3 I% `% Q! M4 e& g1 W5 v
credibility-one6 ?% [  z) y8 L7 p8 w
;;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- s% C5 c" D) y( z+ X& i) Q& {! ~) m
global-proportion
) e/ J) O% h/ i4 Z  @5 j  Y  d( Bcustomer
. l6 J. I8 U- x" kcustomer-no
$ |$ M9 T* Q* [& gtrust-ok% W; z# s$ n) d  m  D# r* Z
trade-record-one-len;;trade-record-one的长度
) q$ v. H9 t$ [# O% L]
( L# O5 Y% V  I9 Q+ W5 j% f  e, b
6 ^& S* N3 N  `0 K% x;;setup procedure
$ p" `# J4 v0 k7 j9 U) l; J. g: O$ C4 |5 I- A1 B- n) {* p
to setup6 X4 \" c! p  h4 l
. r8 y. h8 F) B" }' Z
ca
% P+ P5 w9 I  ~! V7 E
, r! M  k" `) O. u* D; i
initialize-settings
% f# Y) }; O% q! S

7 Z8 l( S! m  J+ w$ wcrt people [setup-turtles]

' Y$ P: j7 M, p0 ]7 _9 m
$ ~5 v) p- z* I/ a; q( |) |3 zreset-timer

0 c* N/ a3 [# O' n
8 F" a8 z8 {+ L: a. zpoll-class
) T! k; B! N0 q

4 P* ~3 Y7 `1 D/ n8 D& [4 N9 Wsetup-plots

9 Q% t- y. U0 w: `/ A- p+ H: S3 c+ x0 s, {
do-plots
/ O6 I! I% o4 W+ h3 v: M( @
end
- v- _2 W* i  }$ Y9 X2 d* T) R' q
to initialize-settings
/ X$ m" Q) B0 ^4 g" g2 h
. Z3 J6 U# r* s; g1 e- Vset global-reputation-list []

; R6 G' D2 P0 t$ ^" a# X5 ~
0 v; n9 p- F5 k6 a% {5 ]set credibility-list n-values people [0.5]

5 F! {4 v- E% W8 m9 q. l5 f
! `4 G+ H* h( |set honest-service 0
9 Z4 n' |; l* w" r

* e; |0 _6 ?: e  Tset unhonest-service 0

6 N" w* ?$ ^6 A7 J, z2 U3 V" _8 j% G( W) t: J$ e- G0 w
set oscillation 0
3 }# f2 j5 J) {6 r2 e8 ~

& @3 m3 Q5 w/ `( vset rand-dynamic 0
' L1 \' n& {  R/ _. I
end
6 n' e6 T, q4 g9 z/ }5 v
# M% v" I; `- H2 r0 P/ {to setup-turtles
. Q  m" P. I/ E& h9 @+ G, ~set shape "person"1 o6 V9 Z2 c5 S- f2 k, f" C
setxy random-xcor random-ycor1 ^, H) f$ B' L' U4 G# T- L$ ~
set trade-record-one []
8 A5 m5 C0 P3 |* ^/ Q8 w& T
% w1 w3 d6 X" J! _* c: U
set trade-record-all n-values people [(list (? + 1) 0 0)] ( g! w8 {! b# s8 n! }

0 V7 \* H0 |! G4 y0 R6 I$ dset trade-record-current []
3 D/ Z. ^) k. S. o- Tset credibility-receive []
* b" N0 y. n" |, n$ nset local-reputation 0.57 I9 Z5 i; q( V# K) ~
set neighbor-total 0
" T; \1 \# {. U  @- d! T1 J/ dset trade-times-total 0
: e5 Y) o% B: Uset trade-money-total 0- F5 v5 F, @' V2 F! [$ c3 P8 K) Z$ Z
set customer nobody) O/ h6 a1 X2 s
set credibility-all n-values people [creat-credibility]
& S2 x2 I0 u. P+ R  Bset credibility n-values people [-1]
/ X. f7 H; U7 s. yget-color% p8 I+ K$ z* C. D. V: \
/ h5 O4 J, t. A% _6 n( L
end
* ~- J2 ^0 H5 r) t! h5 O1 ~: n6 M4 d# W: N5 b* \+ G
to-report creat-credibility  v2 I/ w3 L# U2 ~: `) J
report n-values people [0.5]
7 x& [* g) @$ G9 Y) a8 lend+ K: L8 a1 L7 H0 V3 c: s" i
/ ^8 p" R7 l+ |: D
to setup-plots
8 O( h8 u! G* k: g7 r2 V! a7 N" h: m9 t
5 ?& |* Y7 N$ ?- a6 t' P4 ]set xmax 30

- ~' y+ k$ b8 P; R$ o6 s/ X# s) P
, T4 h3 ^; l+ Z3 xset ymax 1.0
8 y6 y. e0 T. F, z$ d
5 D$ }& ^1 g4 m* l/ V
clear-all-plots

3 [% y5 i6 z. ]; s* _3 h1 K) g& _) m( m/ W5 G8 g1 B
setup-plot1
9 d. M* W8 ^2 z# ^; J4 N" N9 t) R5 P
( @+ J  g- h: x9 ~
setup-plot2
4 u) O  ?" e+ X, _9 f6 q% Z/ c% e
. y0 d) C7 E( ]+ l! }7 e" ?% }
setup-plot3

- V) {( _' l* a5 l. X* Kend
4 c& ?' m4 |2 k' E9 d* |3 k% R
: x8 f1 G1 a: \+ G: y;;run time procedures) n0 @2 b( X5 [3 K* X

2 s  _) E' i3 b7 t& i% _1 B) j: z4 Wto go
0 x+ P8 P7 W( G* F, r
3 w3 {# p8 u; K5 m/ q9 a. _ask turtles [do-business]
" S$ d  w' s7 o
end
/ F% C" a- T& Z9 T4 ]6 G/ r" g0 N4 t' e% s0 g& S2 u* e2 {
to do-business 7 R  `  H6 F" f( i/ k6 g
7 u! t+ H# y- ]
) V. N; @9 H7 H
rt random 360

7 f$ k1 j" }' K! v6 U! K
- v# o; v. z$ W, G$ q( k3 X" S: dfd 1
" c: Q, z+ b; j/ W' g. {

$ X7 i+ p6 K0 w; ]% I* tifelse(other turtles-here != nobody)[
2 }" B4 T3 ?2 i% V& k7 i& U$ p
+ Y6 E. E( u3 g( g
set customer one-of other turtles-here
- p5 m0 ]. d3 P! Q7 ]
% B0 g$ v0 W2 a- s' [5 `0 i
;; set [customer] of customer myself
' z: B3 S+ \3 \4 s# l7 N& L. p8 n

# W( n# S. R/ Q- Aset [trade-record-one] of self item (([who] of customer) - 1), K( o! y- @: h3 D; }
[trade-record-all]of self
5 K, |- D3 Y$ P8 @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 C4 o% }/ F$ R" U6 c0 c

2 n2 V1 i1 J& @' aset [trade-record-one] of customer item (([who] of self) - 1)5 Z" I4 P9 \' k5 X5 a
[trade-record-all]of customer
6 v: m" ]" d2 ?/ d: Z6 N7 U8 [

; {" T" p/ ~) t; _- x7 _set [trade-record-one-len] of self length [trade-record-one] of self

' M# O" X. E  w. H% g2 H; ]5 L
2 Y6 t" Q2 M- Zset trade-record-current( list (timer) (random money-upper-limit))
$ Z0 x& i) ^% M- L, q3 A, s" m3 f

7 J, l. h) A- m' jask self [do-trust]
4 N6 K% n" M/ ?0 H! j;;
先求ij的信任度
4 F  S' h: \1 m6 E* `( q* `% P2 w
if ([trust-ok] of self)
0 J8 R: w( n8 K1 A2 K( {" ?) q;;
根据ij的信任度来决定是否与j进行交易[% C' w8 p% a% `5 l8 u: X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; o; h  `" F) M' o. P2 z' y

% C- U7 W8 S' k" n. a6 Q; N  F[
  z. I$ Q! W* p: D" ?

! p. Q! @+ ]+ i. R1 Tdo-trade
7 |& {- H7 X! R( v, w4 b

* W- c2 |! v" v" F! f5 wupdate-credibility-ijl

' j& l4 }/ Z' D+ m
4 E' z: ?8 V3 h& o" k0 u, r; ]update-credibility-list
7 l0 V3 R2 y! C  Z
7 D: O5 P2 L/ I$ t1 N8 z4 [/ F4 J
  D& d3 w, A) d. S
update-global-reputation-list
0 `% X* [3 Y0 |. K

( ~4 u! {; [4 @. h/ e. `poll-class
' A# O* F+ `/ ]% W3 ~

$ K% D- P* M4 ]+ Rget-color

% v; I! d& V: x* }% m  r% F' y& n* L6 R0 ]* U0 R8 c& _
]]
; I+ s4 Q: t+ n' Q& K3 L6 K6 y) y) B! |# T/ {
;;
如果所得的信任度满足条件,则进行交易
2 ^. g8 k6 ]' s9 O+ c6 T
" o- P0 t: p2 a% l  y[

4 ?$ r" q- d! G% ]
) }' q" f0 [$ @3 `8 V! mrt random 360
" X& j& s' q; A) _8 L3 O: _+ ~

& o2 I( o0 E* Z3 r7 X6 Xfd 1

9 j' {, X" Z4 E8 A* x6 I: e+ |% i. h& u/ D5 P
]
) p+ ^4 O  \. Q$ H% W

- n9 Q3 a! u! M; @+ ]end
/ Z" i  v; i! e, g% m
+ u& W7 f( Z9 Z0 Z$ T
to do-trust 1 d: A1 `$ T2 ~) D: j/ k: M8 ^5 v1 B
set trust-ok False
, g$ X- d2 Z3 S- [5 C, ^; P% s& G. [$ }
7 K$ |' j# e. i( o
let max-trade-times 0
& W8 P+ o# d4 p# T; A  J/ \/ nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' I7 N2 U/ |6 M) H$ q& Olet max-trade-money 0
% y. j" R* ^$ ?9 k9 Q9 bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 j5 Q! c) |3 ]8 v
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; E  q5 k8 R2 l  m! @; D& y) l8 S
" t6 Q6 `, W4 |# m4 d! @

+ j) r& i3 C+ Z* T. {2 P6 L9 @" lget-global-proportion/ G/ S# ~3 T4 P3 n) E7 q7 X
let trust-value- x9 O- T9 r" L4 s' g! s5 N3 \
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)
( c; b- U. D- q4 m
if(trust-value > trade-trust-value), }) f+ O" ], X' Z1 N5 D0 G
[set trust-ok true]( C  L) D# A0 u  ~8 U+ P# Y
end
. J3 X0 [; i* H8 t# k+ q4 X  y+ T4 r% B+ {; i9 p/ c
to get-global-proportion4 d) x( D# @" X7 s6 W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)& h) m3 l1 ?1 c7 f
[set global-proportion 0]! V% n9 |; Q8 X& E
[let i 0! n' |4 ?6 p( Q& m( e
let sum-money 0  G2 ?) v& L7 }0 H3 c
while[ i < people]! b7 c# _# p- V1 [# X
[
4 h9 J* J3 x# `# g  Kif( length (item i
. G1 r0 a2 w8 T0 i3 y[trade-record-all] of customer) > 3 )
5 s  ^! e3 ~, P6 i
[+ v/ R# f( V* a, u* D' e
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  f# `7 Y# Y8 E1 a1 z8 i
]
: Z. C+ I* h+ k1 j! }9 K! T]
% i8 u! ~! E3 d, a  zlet j 0. d4 r. w, u. Y6 q0 Y, O/ n
let note 0# M- a) e4 y& \* t7 i
while[ j < people]
- p- ?  m" T$ \) X9 {[
! L* V  b9 G4 x# k0 P8 Z: Hif( length (item i# X6 n. G7 W" n8 k/ ]+ T( D
[trade-record-all] of customer) > 3 )

/ z& M3 q) L5 i2 K7 n[
, n* Q9 x9 ^7 W9 \ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( h5 b( e5 D' ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 ]; \$ P5 ~9 m& A0 b
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- Q/ u( O  y; K+ U( ]]
* ~8 j+ Z" K) s: z]9 S' @" p$ n3 ]' P
set global-proportion note- i7 m* ]- {( q# D
], C2 m* E4 f; ^" j
end
% ~% K9 z& E/ M: Q4 `8 W! |0 e
8 ?* k  C) R# Y& Xto do-trade
5 f' `2 m" b3 M% q. h;;
这个过程实际上是给双方作出评价的过程
2 }: C1 v' e2 h8 [* |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 b5 m  `9 W+ w# p: i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, ^9 D: Q8 c9 u; v1 {6 J% `set trade-record-current lput(timer) trade-record-current  v# g6 q  |( M2 M" o) T+ T
;;
评价时间
0 K1 o- m5 \  h9 U/ ?- Wask myself [
4 J( g2 D9 h+ x: E. V% b* S+ _4 m0 Aupdate-local-reputation
1 X. p7 d7 z6 i+ Z: Mset trade-record-current lput([local-reputation] of myself) trade-record-current6 {' `, r, T7 h- O4 n, n/ f/ f
]
3 |" }, n1 H2 ?5 xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' m% f$ E3 \$ Q! L; N. J& B
;;
将此次交易的记录加入到trade-record-one
+ F3 E/ |+ R" l) n: kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. B$ ^. ?* T; s8 Clet note (item 2 trade-record-current )6 b0 r# L# h! ?% |6 r. X1 Z
set trade-record-current
3 b! R( J3 z; i( p+ b: s; n(replace-item 2 trade-record-current (item 3 trade-record-current))

$ E, [1 [' t+ G/ e) o, jset trade-record-current7 L" H  C+ b) ^: r: i
(replace-item 3 trade-record-current note)
& h- K% Q- T& |0 a
8 `( l6 r: j" Y

( C3 |8 z" o( Task customer [
& u" j* P; E1 q# A& T/ k" W9 eupdate-local-reputation1 f2 H$ L9 m# b+ W8 J# i0 w
set trade-record-current
& C8 P! e- T, v" p' v+ W(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, L6 M0 z- k/ c) E9 N  u( C]* [2 L0 P; \0 K
. O  R- Y+ H7 u! {2 w# O( E* g
' w; \) s/ y4 r$ T
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: K$ g9 N& s* K* f2 b2 u* V& t

# H- W5 p. x$ V4 L; h6 @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 u4 m0 N7 F$ v1 c& s) O( b;;
将此次交易的记录加入到customertrade-record-all
: T( t  C* o. n# ]: Uend; ?/ M' k( q) P# W! d6 U

( j" M+ Q( ?& q# Nto update-local-reputation
% v, [- q0 P/ _set [trade-record-one-len] of myself length [trade-record-one] of myself/ Q! }0 c/ C8 m9 y
9 z4 q* @+ u( E: M0 D! x) i
) t3 R, M- B. n" j) Y
;;if [trade-record-one-len] of myself > 3
7 m3 W7 z: g* f! N* @$ c
update-neighbor-total
' i" n0 @5 h8 d% J" N* H3 f;;
更新邻居节点的数目,在此进行1 ?5 w$ c& U: }& L2 p
let i 3% W& Y( J* J0 R0 J
let sum-time 0) L% ~9 N- t3 V& ]
while[i < [trade-record-one-len] of myself]
- C9 t* A, [- O$ C3 \# H- I& k[
5 l% Z, V1 P  D/ ^3 Sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) o7 R- q! L/ g, aset i9 s; ?  F' y# v
( i + 1)
* Y9 V4 B5 e* Y% L4 u# c
]4 T2 D+ w) ?7 m
let j 3
% Y. J/ p8 a! t9 h8 }( w4 Jlet sum-money 0
9 a5 z, X, B5 Rwhile[j < [trade-record-one-len] of myself]6 i9 K4 |6 r) h
[( D) E2 l2 }9 d/ Z
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)0 r& m, A; S4 O3 U5 b  j) g0 \1 z
set j
/ ]8 f7 m/ J' g: {) j8 l+ j" N( j + 1)
1 m% l* I5 M- q$ ^; c
]
+ \: W/ w, l& t2 w: O- W) C2 {% e8 {let k 3& x3 b# h) [& V3 L
let power 03 Z& w  G& n- M
let local 0
7 V/ ^$ B- d- O; a* ?+ k, r4 Gwhile [k <[trade-record-one-len] of myself]& B5 D" ]8 C9 y
[# l4 f- H, v1 l* ]5 @7 p  l
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)
7 q$ o. V$ v! tset k (k + 1)" z( y1 Z) R% y6 {. L5 O
]
7 d9 B( h3 F* i/ H  K. X+ ]set [local-reputation] of myself (local)5 i7 y, v, g4 R+ x% q# e
end3 R  |# d( N4 j6 F! j) L& e

% ^, ~) T( [" x, I, t% }; }7 S4 U1 n/ ato update-neighbor-total
" a; y, }! Y9 W! V* m# c; j1 k$ k0 P$ b
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# }4 C' z; g' h% T' S; g$ u# K  J) R, P* J' s. Q

. E1 [" ?* t, D3 n  }6 ^end
4 r$ W, n" S; i/ z/ g. |$ v& h0 k. d) j4 M# t6 K9 m, h
to update-credibility-ijl 5 M: |( g1 P! f6 i. J$ b# m" ~
! ~: Y6 N( |; m! C9 |; ~) P% ~5 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。
' ]& O- |5 t3 f6 Tlet l 0  R5 E- s+ O0 N2 z4 s4 ^( I
while[ l < people ]: A  j; t3 E) `" M4 t9 X$ a
;;
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
6 [0 T2 x8 W" H7 `, ]" [! X[) n- H8 {6 G1 C) W' S/ m! e+ X
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 h; J; O$ h9 \8 U/ S8 h* ?
if (trade-record-one-j-l-len > 3)
0 k3 k% `, k; {( m- H[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; F6 O/ k; |2 X2 r& `+ ~
let i 3) p. v; W! x! Q) K7 C; q5 V
let sum-time 0% Z& q! t( T' g' S- M% e
while[i < trade-record-one-len]  @' J: m2 O& i$ ~+ h2 |
[& P. G) Q( l& w6 v  V- s
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) i! r; N& W# P' R( P# l
set i6 v$ J% o! _6 A8 m% X' Q) l! m; s# S
( i + 1)

# b# e) N& |" K# L' Y$ L5 I$ F$ o]
! u4 a: \! y- Zlet credibility-i-j-l 0
: Q. n) z8 q3 z# J" P7 x0 {. d;;i
评价(jjl的评价)
9 b% v- {0 |3 b2 clet j 38 h# r% m; P7 b" U# Q5 w1 o' K5 ~
let k 4( r8 ]$ m( w$ P" V
while[j < trade-record-one-len]
8 D3 y2 @/ y7 N/ b% g[8 o# P2 G; {; @$ d" P) l
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/ `/ Q8 `9 w' F& J- @
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), d6 J% M) c( i2 n# P8 g
set j
% A8 O5 o# j: X6 N0 B% R# x& `" |) p( j + 1)

8 I$ ^, _, S3 J2 \# b9 }: B) @]
/ C) T0 [# o1 j! nset [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 ))
5 d- o  {2 m6 l6 D" C( ?5 h8 G# m( h2 q9 j- g5 d, `
: s0 o! Y& A+ H! z  w
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 _. Z, L- ?* g; m  u) _' c3 C! M
;;
及时更新il的评价质量的评价
$ S, w4 }1 e+ ~6 gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ ?6 d) ?+ c0 l" [3 q+ s2 ?
set l (l + 1): ^8 h0 w9 ]" t7 o0 V. k
]6 t/ ?! N8 l$ q! j4 N) H1 Z+ L2 l- w
end
. a( _9 x9 u* J# j7 C5 L! j- n# `9 t
to update-credibility-list
% ~) e, ~( V4 d/ }3 Vlet i 0
. r: A  {$ j7 K- l" Zwhile[i < people]% J7 ^( D+ d, j9 R
[1 l) d+ M& A" o# S4 h: i+ o( v. C
let j 0
8 p, G) I# m5 [8 f3 g" ^, Ulet note 09 z0 u% u9 ~: y: Z  k" c  `
let k 0
6 R; c5 L5 Y- I; p6 q8 v& u# o: E6 o: J;;
计作出过评价的邻居节点的数目1 m/ k2 g( i$ s' I
while[j < people]* U, R3 H- A! Y" O" A9 _+ r
[
) J8 r8 M( w( B" g, X+ O9 a0 bif (item j( [credibility] of turtle (i + 1)) != -1), q' M& F* b/ y$ G- N8 @  G
;;
判断是否给本turtle的评价质量做出过评价的节点$ |  ^0 _: Q$ m
[set note (note + item j ([credibility]of turtle (i + 1)))
8 C" z' Z# \, O8 I;;*(exp (-(people - 2)))/(people - 2))]
4 A+ J7 i) c; G& H2 q6 J) a
set k (k + 1)& X) m) B4 l1 K) _! T5 w8 I
]5 T$ @* S* o/ H! \
set j (j + 1)
1 v! A4 l# x" G2 b]
6 z- U& s' r2 j. Z7 d1 pset note (note *(exp (- (1 / k)))/ k)1 t5 a# L/ ?1 _$ X) z; _; j
set credibility-list (replace-item i credibility-list note)
5 n4 ?3 ]! h% Z7 k$ A# B5 E3 A8 |set i (i + 1): P1 _6 [" D( k6 U2 M- `
]6 S/ @, Y* Q& V' R2 Q* C! K
end
# i3 n" R2 W- e! Y  ^9 ^: Z
4 z6 w8 }# u0 N9 P8 \to update-global-reputation-list0 @/ m; F' z) [# H6 z
let j 0, l' m' k7 m+ ]  ]
while[j < people], h) J4 V0 g! k- b6 E# K
[
& Q4 y/ ^# J( Llet new 0
2 D9 H% C) p" w/ b1 [# \" Q;;
暂存新的一个全局声誉6 \8 z: K  x9 z+ f* i& D3 r; y
let i 0
* i" N, z" L) w) ]let sum-money 0
3 N2 Z( i' i6 x* j, D) n" T1 clet credibility-money 02 x/ J; l( z" H
while [i < people]  ^( @0 y7 N2 P+ e0 \% }
[. R+ N4 `1 D, D% a9 U
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ v/ `8 J' p  t0 }* q, i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- q' S- T# k% m7 @5 R8 E
set i (i + 1)
  `$ I+ c' m& W1 F" R2 {+ g5 _]3 e' @, o1 l  T4 M! h! W2 D
let k 05 I2 q8 B& g1 K, u) N7 r' {
let new1 0' {" \: K' X. B0 ^$ [; ^" x/ B
while [k < people]% u7 ^$ T5 E* t( k$ t4 D
[0 E- Z" J% c- S1 h7 C: @! p+ d3 d; \
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)8 R7 k* R- ]% c( I% V1 s9 F7 W% G
set k (k + 1)
% R+ f' y. Z- e]
; @4 W" c% W4 f3 P( dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 c7 |  Z5 q  ~+ Q7 d0 r( dset global-reputation-list (replace-item j global-reputation-list new)
: b# ^3 K; _! Y3 B3 ]& Cset j (j + 1)
+ ~0 n. d+ S# C* e]
2 m/ l9 m% {# h9 C$ w7 g; K& Uend6 q! j* _: ~7 h- ?# v

- s. q, k4 D- J8 W. S
8 X( f' ]6 h) N$ e/ O5 T. j1 R0 }/ U- ^9 ]  ^6 Q# H' g
to get-color& A( u$ F1 S7 l; W% N

/ D8 H, O! r6 W2 P. w5 Rset color blue

( L* |7 M/ j/ L2 B8 @, [+ oend
: Z8 b: I" Y' J: g2 M& Y1 _+ v/ l. T( k% m+ I, r* D% i
to poll-class
5 I( z9 _8 i6 Y; H3 uend
3 h- T$ ^7 R$ S! d% Y' |2 s" J7 {
7 q% u9 Y1 e) G. }1 ~to setup-plot1
& o9 M' k! r' X+ J4 L) n: p1 a$ W: I- ^+ [, c3 [- e$ |. x6 ?3 `
set-current-plot "Trends-of-Local-reputation"
6 s1 f$ B3 y! m& h' C3 W2 O9 ?% A2 w

6 D: q& N8 B( r+ y% \2 l  Cset-plot-x-range 0 xmax

6 ^4 F; b1 Q* q: E; c1 J( q. t$ ]3 s. ]) R
set-plot-y-range 0.0 ymax

+ `! ?+ U: z5 ~end3 D6 Y7 g4 i) G& |- z
4 g8 m6 a3 I1 \+ `- i, f
to setup-plot29 P/ `  E+ l2 r! v$ ]) }2 P; a
" U5 V6 D' O& f4 `. s& p+ a
set-current-plot "Trends-of-global-reputation"

. M4 z8 l# F3 ^. ~8 N5 Z. e; H  H
set-plot-x-range 0 xmax
& K( M7 _8 {% J" ~) @3 L
# t( H! W6 o! m4 i2 a" o* d* H
set-plot-y-range 0.0 ymax

  u# F/ H* u* O9 u* Send
" _& B% \# ~: x9 O, L# c- s- o3 t: b* r3 u3 I9 |' Z
to setup-plot3
5 |( v$ f* P! s  H% L/ e5 c) p; U3 U+ y: Y& d
set-current-plot "Trends-of-credibility"

/ Y! F5 S( q) e% P3 M
' `; W5 L( s7 E0 a6 [" Tset-plot-x-range 0 xmax
; T( x$ p( R9 e9 N6 c% _

8 C2 x4 n" \. ]8 C; n; ^$ s. Nset-plot-y-range 0.0 ymax
) }5 R# A6 S; M2 j5 L9 Z/ a1 I
end
, M  T5 ?3 r3 J9 |# w( i4 b; ^, p
to do-plots
% h6 T7 Z/ a+ ^7 `- i. O% g$ Lset-current-plot "Trends-of-Local-reputation"5 r! R% H1 p0 D7 F: |' |
set-current-plot-pen "Honest service"
! f1 f  i; ~* `+ x/ cend- _: y# F( k0 [% n; g
, b5 \( m; ~$ K0 O- [+ \) o8 E* s0 {9 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.
+ A  b! b! k0 X+ L& \' H7 g4 t7 X% y5 R, ?8 j+ H
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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