设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 17711|回复: 10

[交流] 关于turtle的使用问题

  [复制链接]
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:
. Z2 s( N6 z8 [/ d% R7 I+ `to do-business - N5 S' n7 Q6 k1 R4 J/ s
rt random 360/ U* N) a/ [* ~5 P  r& z
fd 1
' o$ G7 n9 u+ ?- L ifelse(other turtles-here != nobody)[) \- [7 i( F8 E' @6 |
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
8 z1 O4 ~% [/ d5 N8 a$ C; w/ F   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( D' z* R  @( a" S
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: T: J& M* b* g) j
   set [trade-record-one-len] of self length [trade-record-one] of self
7 i" u; F4 ~0 Q  ?0 R3 f   set trade-record-current( list (timer) (random money-upper-limit))4 f- S% {" u$ z, }3 z: i4 }

1 F* l& U6 j9 ?% b8 l3 b问题的提示如下:0 e" U* \6 t! ^' k

7 x4 J2 e8 }3 ]3 w) h: D2 Ierror while turtle 50 running OF in procedure DO-BUSINESS
" P: ?: U( t1 \; X& l+ f: N  called by procedure GO
) q7 A. S) A) G. \1 l# oOF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 i$ K! b3 W, B% u/ H' ?! V
(halted running of go)
- q6 g4 c1 i. G5 K9 W8 x, g# i5 p. P$ J4 J9 K4 z  s
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~~
4 t5 S  q5 z" [( t: ~5 }, x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.

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x

评分

参与人数 1仿真币 +30 +2 收起 理由
booblu + 30 + 2

查看全部评分

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
! h, K% B5 D3 w' E  Uglobals[: E5 ^; d" N/ P+ M( C# k
xmax
- a( F/ h' U0 t8 `. R2 _ymax9 ~& A$ D" d+ V0 W" Z* D" ~
global-reputation-list1 y8 X  ~8 o' p/ ]) h
2 q7 J+ L- y5 K; p7 }) m4 ]
;;
每一个turtle的全局声誉都存在此LIST5 L! m! j9 W5 d$ h/ n) b( [" V! \6 s
credibility-list
% T' ?, Y3 X% l: |5 ^$ ?/ \2 l;;
每一个turtle的评价可信度
3 N  `: F# k1 c& t4 w! ]$ uhonest-service
, Z  w8 N  {* R& H: |  junhonest-service, ]& A! ^5 c+ L9 R. J: K
oscillation, p/ K( [4 t2 \; r+ n' L
rand-dynamic% U6 K3 U; R- G+ L! f( c; s
]
5 e, S* A; I3 B* x  D, S7 `3 p1 o+ L8 `7 a+ r& \' p* ~. U7 W
turtles-own[
0 a4 }6 E5 R1 M# v* K+ F1 @trade-record-all- e) ]* f& p0 a  B9 Z
;;a list of lists,
trade-record-one组成7 d5 I) ^/ y% i/ e4 e  g$ s
trade-record-one- R6 T. G& C( f* x  A" c! R+ f
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. r1 C0 r4 E: @+ Q- T% c
4 _1 Z7 |& Q) n9 X$ X. v;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
0 y2 f  @3 [/ strade-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! I$ D% }9 Zcredibility-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: N# ~6 `6 a2 a. e$ d
neighbor-total) Y2 s* m( m) c
;;
记录该turtle的邻居节点的数目8 o% w3 [0 g$ y, o& L1 @
trade-time
, I! L6 N. r, e( J+ `. E;;
当前发生交易的turtle的交易时间/ F% [9 Z2 j  @* Q6 @
appraise-give
$ o0 {' I! [& a0 K! M2 K$ C;;
当前发生交易时给出的评价
8 m6 ]& v# {$ W* m$ fappraise-receive
' w6 f5 X, x8 Y) L" G3 v;;
当前发生交易时收到的评价
1 B" ^$ r* i3 V8 dappraise-time6 j9 R) F) {, I) [! f7 J1 f
;;
当前发生交易时的评价时间
0 }- A# Z' [7 u0 {local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 F' S3 y2 D% {% c! b9 a
trade-times-total
' b" v/ p" G4 W, `;;
与当前turtle的交易总次数8 ^/ t$ k% a& u! V5 J& I
trade-money-total2 b/ w3 x% t( b" a
;;
与当前turtle的交易总金额
% r- H& m: M) `: K4 P9 Z% }2 Ylocal-reputation1 N, D7 d4 P. U# y2 {8 D
global-reputation" o: I4 D: R4 q; U; W
credibility/ F( x  b7 l: C. I7 `' m( Y' `
;;
评价可信度,每次交易后都需要更新
0 Y8 s$ G1 d  B& e5 a" h2 mcredibility-all( j3 e7 q/ X: U6 D/ @
;;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0 ~) Z/ Z) |1 M; t* }* `* U

& Q4 V' @" l3 g/ K: V$ Y0 ]' K# I;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.58 J: [! c8 {% t4 C! H2 X; N) \! C
credibility-one
8 {+ k* Q* V1 g& O' k;;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
" A. D* b, Y& J$ ~+ oglobal-proportion
9 a0 H7 N0 H( D- i; `$ tcustomer+ j$ W- e( P9 P8 \5 S
customer-no8 c" E* u* ]9 Z/ \  k! X% o7 B
trust-ok: t3 O, \& G, q/ R, @5 n, I2 D- w
trade-record-one-len;;trade-record-one的长度' Q( |$ V0 c% v( O6 E) f  j6 U
]8 L5 d/ d, G. f9 F6 \7 t
# o$ f8 X+ j2 l
;;setup procedure
, Z; }* ?0 T5 ?5 T; r
9 h4 g# N, }7 c; w% Sto setup
. o4 K- Q7 }' y4 q4 k- o9 V% A. p2 [; e
ca

6 ?$ o) S% B8 {
+ `, O& Q7 d* Winitialize-settings
, Y8 _/ H0 e7 P7 g, W% |) v1 C  ?0 V# r

* E$ ^" E. L+ }( N3 vcrt people [setup-turtles]

2 O, l* R+ ^) I* q
5 W3 b1 l* E# x- Z& ^0 Q2 D% hreset-timer
+ j! r2 `1 }. O  E

( ?% f- U9 M8 q+ ppoll-class

: K5 B* u3 i- J: {7 x" F/ m, i/ i1 E) `) U
setup-plots
9 ]! P" I. a2 Y6 V1 H& n- [) |

; b' W! m) V/ K& t' e# L5 p, Wdo-plots
2 X5 B$ n  E, K% r- `
end
* W0 F0 X2 D+ P/ p6 U1 D- G; H8 z. c, a( m
to initialize-settings" K/ U% W3 f1 D, U, B9 ]- ?/ Y

% H' z; m9 C4 w. f3 j& v4 Kset global-reputation-list []
( Z  ~* P4 t1 D9 E( a+ j% j0 T7 r
1 g0 Q/ \3 t+ u" y' }- F/ t
set credibility-list n-values people [0.5]

* \, `) l2 u% y3 ]3 e" \8 x& L2 N8 `; h
set honest-service 0

3 _6 N9 A1 H) m9 r
, a( ?8 {- [/ V" K, A0 qset unhonest-service 0

$ ~! b' _- n$ W+ Z) v
5 `1 I7 x0 s2 m0 M2 Uset oscillation 0

/ J$ ?, p! v' O4 A# b
' }, [. |$ ?7 uset rand-dynamic 0
% {- f/ Q6 t, H3 t3 i% A0 j
end1 H+ @7 a. x% A  @* f
" k4 W& `' c. I/ L& V+ D' l8 u7 _
to setup-turtles ! h4 y, T( P  U0 w. {6 L
set shape "person"
) w) y/ H" s7 Isetxy random-xcor random-ycor
. a+ Y* l7 E5 i0 Z+ ]) n9 ~set trade-record-one []2 u- Z/ a) f: w: `$ x( c* h) R" o

7 H+ c, R6 u# C9 _set trade-record-all n-values people [(list (? + 1) 0 0)]
6 o: a( [2 S6 n6 r  |5 F2 @

8 T1 u& H+ T& v* D% a8 Sset trade-record-current []
/ r- b5 k8 _2 yset credibility-receive []
: h" l0 |# t. |& |4 K& Fset local-reputation 0.52 w0 e- f* ?0 z( t7 v
set neighbor-total 0( {9 K2 \( [' U3 H
set trade-times-total 0  l8 J8 n* r( g* E- R
set trade-money-total 0
$ f. O7 x3 S. pset customer nobody
7 _% V$ t; H: s8 }+ V! s' Iset credibility-all n-values people [creat-credibility]
6 W8 }1 m; G' ?) W) P2 Mset credibility n-values people [-1]' z9 [; h, n8 k9 R: U) K
get-color
1 j6 |9 G: {$ ]$ O3 g% M
1 {0 D. K6 k9 s. g; J! k& _
end! i: _. L/ z! c# a5 B+ o$ y

" G+ e4 E2 b  D6 d# Fto-report creat-credibility% j9 g7 L" u8 a0 R
report n-values people [0.5]& L5 d( q1 G* {7 m
end
. v6 l* E! w" W  i& a, N# L, I5 c4 ~8 v6 n& x8 u5 n% [
to setup-plots$ `2 U$ i3 T* Q, c& K

$ a- h, V$ s% |5 pset xmax 30

, t$ f) Y5 f; P6 ~, V  c- d) I  @
/ h, }3 k$ ^- ?" X) [set ymax 1.0

( u+ B$ s4 [0 ~8 C8 k
1 q! n, U) c2 B! x  f: W& {clear-all-plots

; [7 I% M- o& g$ C" F1 o7 u- \3 S, w' b+ E
setup-plot1
% f0 _2 Y1 K" r" g$ T3 ]; [
* X8 y- h. _. n8 m" W: b! G
setup-plot2

% k) L- a. P4 q5 Z# c; H" N6 T! Q& N5 v
setup-plot3
6 |) e* ~0 ^, F; ^2 H
end
) J  v  |" \/ D. G! R8 j! `
0 C5 e" K/ ?  ]8 T$ C2 ^5 |;;run time procedures
0 V) r( H5 K0 ]; d* ?4 T0 T
* n( I+ [/ c$ s, ]to go
6 V4 @4 h& e! m
9 e! b* J  o* }6 f! _ask turtles [do-business]
( H* U  D, E% N/ S0 C; j
end
% e0 V+ X' B4 \% e1 |/ ~2 |5 o+ x- x" X6 `7 b% s
to do-business
' P) B+ @) H: q& W# L

9 {4 b) \& M. V" Y, \8 c
4 o: I! M' r0 T  Zrt random 360
9 [+ d8 D5 j* Q: Y6 V# Y

+ k0 A, `/ p. X4 n% `fd 1

. R$ |  f. u# ^! M# H: N3 S8 o( T8 b8 K* r( V9 E
ifelse(other turtles-here != nobody)[
# H8 X" T* X% l8 G

; |$ j/ {* `) @: j/ V* o" R+ S% S# gset customer one-of other turtles-here
: c  o# g! w% r8 A, S! u

% _, S5 {3 G* [; F6 n;; set [customer] of customer myself

* P. O2 T  [! @( ~: R5 O
( o8 D  Z* a. _7 Xset [trade-record-one] of self item (([who] of customer) - 1)* h1 A/ e+ L# n) t
[trade-record-all]of self
6 f% `2 U" G- m" b( r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 a; \5 h4 f2 G* c# k# H8 j" d( X5 v) E
set [trade-record-one] of customer item (([who] of self) - 1)
. J2 Y; p  K( M8 u* [2 H0 a[trade-record-all]of customer

! H8 `) [0 [- G5 _( x3 J) Z, u! J+ q, |! ~; w: y
set [trade-record-one-len] of self length [trade-record-one] of self
3 j- y, i- G3 k1 ~6 ]
9 g; b5 i. o" P8 t; d4 e
set trade-record-current( list (timer) (random money-upper-limit))
. o( ], U  ?1 C4 m5 R

4 j) H% M: ~. k* C0 V& l/ Eask self [do-trust]
# k1 N4 |5 v; s" O+ X# t;;
先求ij的信任度
$ d; j9 D9 s% R* }- B- G, y1 D0 ~3 }& Q7 Y
if ([trust-ok] of self)
5 i# S4 e: g& }4 x1 M;;
根据ij的信任度来决定是否与j进行交易[- I6 R5 m) S7 [0 |2 D# M- t
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- S5 ?% A" K6 S, U  f
4 z8 |. y: `' L) Y! E[

) ]" S# B, h- M+ z9 f7 f
0 S1 @) \4 u% T1 zdo-trade
7 B! `  c+ W5 b  n& Z2 X* O* P4 ~
& |. \; j, a* z) \% }$ _! S
update-credibility-ijl
0 J" K+ ^* L& ~" o
2 V9 B2 |( N% p* Z* `
update-credibility-list
& |9 Z: h! j6 c+ C3 Z
+ {7 m! M' O: ]( F/ U

& ^& L8 K& Z) z2 vupdate-global-reputation-list

7 V0 [, \/ W, ~2 E3 J# W, e+ T( l) t* |  A9 v, ]7 M( ^
poll-class

9 n% m4 z: |( p" W
: `6 e- y7 D, ^& R8 H! N3 K( \; E) Iget-color
" e$ a) A% O' o* \+ @( v3 c$ m
5 T) `5 g2 e4 }' p/ |' a5 w
]]" x, s) C* W8 E- w+ d

2 D' H& H, _8 @8 A3 B;;
如果所得的信任度满足条件,则进行交易( A- b1 Y0 n% N6 D1 ?+ k* K* i: z
9 b- C9 u1 h" \8 ^  G
[

8 ^6 }- X4 X6 O) g( R; l" w! o" s* N* p
rt random 360

/ F% r) c( j$ b8 a' |% w; t
3 v' A  a9 Y: w+ p1 q' y% Z4 z/ Cfd 1

5 u: F' q8 d- D8 K0 s
* F  g* f! ?2 A) p; }2 A" C]
- [' N0 A# m7 p6 c
* B5 b( w1 m6 o
end
- C8 z& ]7 |" [1 Y. y

( Q! n( a2 x) z8 ^! Jto do-trust
! X4 _" E+ U$ p7 z/ Zset trust-ok False
8 j. C; I1 i: W7 `& q, }. U% _' c' U. D) f$ C

& F. j- i8 G, wlet max-trade-times 09 Y% O3 b1 l/ c& m
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& @9 b2 J. \- r0 K- k7 c6 Y
let max-trade-money 0
! N- F8 u) P4 }+ r7 Rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ W8 z9 t% @" J" ]' t7 v6 k1 h
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; n8 s# \  c( k3 L, B
# ?6 n3 X7 t& r6 X0 p* l0 m
/ p( |) R% S& W9 t) R+ l! L
get-global-proportion
3 b; f0 ?+ N% ]6 _  |6 wlet trust-value1 D0 k/ a/ X+ C3 t0 l- ~' b: L% f
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)

3 }& o1 ]5 U' @; `- }& P4 Cif(trust-value > trade-trust-value)
: O2 T9 u! T" }7 B$ W[set trust-ok true]) y- q9 ~  {5 S  u" v" i: I
end
6 r) B8 i  q* I$ b8 W1 C* F
5 U1 Q' j/ d1 `3 tto get-global-proportion
) H2 l7 {( s: c! }4 }ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 ?3 l, F; v/ p7 s[set global-proportion 0]
8 p0 k7 G& w# v/ P; \( C- S[let i 0" E  X5 B; V5 z% ?0 }5 b
let sum-money 0
5 a8 N1 q7 n; uwhile[ i < people]
8 l6 x# d4 h& a" \1 U[
% ]& {* A4 V& w8 o" Z8 g. Dif( length (item i
& K. t1 ^% S) i; V9 q8 h; U" I[trade-record-all] of customer) > 3 )
3 W: U; w' R. `8 i0 v& V
[
1 Q# \% {8 V; n, Wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* T# \4 g" l) V. Q/ B$ ?7 s]. W: e! A& o- ], l
], U5 B5 |. ?+ q: a8 g6 Z
let j 0& R) T' i1 m, n$ |9 r" s( Y" f
let note 0. B5 D  r% b% C8 @$ d; N
while[ j < people]6 N% L% O+ c# U! b& F
[8 ?* B; `7 ~; I2 |! c
if( length (item i4 s" @; R" |# e7 F$ p0 @& e# _& y
[trade-record-all] of customer) > 3 )

9 J4 w- v& D0 Y) k2 W[
1 R; K( ?6 {2 U! F& s& Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" m' K# c+ n6 I# ~& E
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  q6 \/ x1 f1 ?7 r- G% L9 `[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 h" Q3 @* I# H& u+ ^]
& Q3 T4 J$ x9 r3 m, @" f, L- h' E5 p]8 H# k! m" u0 j4 K+ Q" I3 e
set global-proportion note
8 I9 p( w% s0 O]! C8 s1 n6 \! E( {& }6 J% ^
end+ V7 [/ o: I- C' M) M- l6 Y) w  {
4 m* Z  z! b. V3 v
to do-trade
, o$ }7 w+ v/ \9 @# v( b! N;;
这个过程实际上是给双方作出评价的过程
' U% W% q* r, V2 D7 m3 Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' [1 x3 w$ ^0 P2 K$ r  k0 Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 i! a  c+ W6 j' h' R
set trade-record-current lput(timer) trade-record-current7 b# O9 O5 q. Y5 F  L+ I0 M
;;
评价时间
( e, K' Y9 l3 d9 _' z! ]ask myself [
& y6 k& t3 h8 q0 S+ q5 z1 E! pupdate-local-reputation
' d. p2 T- F+ n. ^set trade-record-current lput([local-reputation] of myself) trade-record-current$ g/ h) \# }$ p  D# E7 J5 M
]% L: y, J+ Z  V* v: Q5 D' n
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; }( d& ]5 z8 u. n& ?/ p
;;
将此次交易的记录加入到trade-record-one# v7 R  r' L' \
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 V3 b, E# r6 |2 B
let note (item 2 trade-record-current ). {. ?9 B+ w, k( j# y. D
set trade-record-current1 H% b% _1 N4 W* I  I
(replace-item 2 trade-record-current (item 3 trade-record-current))
) ]9 Y' _0 i( C: j8 W& d. m$ I
set trade-record-current
% D  F% i/ E6 M* J! H; I, r(replace-item 3 trade-record-current note)7 j0 t2 K4 a$ M+ Y+ x5 h
; T( e; f/ B7 T" S
! _+ ^0 ~* G$ u  V, y2 S
ask customer [
2 ?" q" B6 _# P$ q: L% _8 hupdate-local-reputation
8 _  A: a7 R) Eset trade-record-current
+ o8 {/ }' ~% }) h& U; J(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ S) ~8 r, _9 W: r( B]4 x& ]! {' w. b3 ?

) |; i' p, f; c) r
2 I, |- X+ j& ^+ n! a" j' {
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 i$ ^7 ?2 o. v& |
  B% g2 e, N" u6 I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 ~! t- b7 E6 c4 H;;
将此次交易的记录加入到customertrade-record-all
8 R8 M  Z+ z! Z6 I4 B' K4 o$ w+ Dend
7 B$ N: l/ S$ Z+ Q4 b8 y, [3 P+ F/ d0 Y: y
to update-local-reputation
, D" J! F7 c, J5 G6 Z8 F# e+ oset [trade-record-one-len] of myself length [trade-record-one] of myself
2 |0 w' U# d4 z2 _: w9 l, D- t8 L
3 S. ~! V" p& |. ?" r$ q+ p
;;if [trade-record-one-len] of myself > 3
+ F# m" }5 {) T- [* ^: O9 K2 ~
update-neighbor-total
# ?6 k/ T2 m6 B( w% y# u6 v7 u2 };;
更新邻居节点的数目,在此进行
( ^% d/ F. @/ m  slet i 3& N/ E* B2 a& g3 f& c( v8 s
let sum-time 0! J  d4 Q3 ~5 t- m3 R4 n
while[i < [trade-record-one-len] of myself]: ]% Q+ j4 p- ]
[2 f& i! G1 }- `% L
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( P0 T+ ]9 t- a
set i
7 R0 {: a: d  n: o6 r( i + 1)
; d( W# W. m! t% @0 o5 }
], G4 U3 Z  X# m3 S2 \0 n) v* O0 a
let j 3. M6 F; C/ @  \* `3 H$ l7 i
let sum-money 0
8 f( G: H8 m$ q1 B! B1 fwhile[j < [trade-record-one-len] of myself]
4 ~/ `# {! H/ p, `, O[
4 F( M. Z2 b# q; \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)3 m) A' n% }7 P# n
set j7 U! ^( w& I! }3 y6 K. B
( j + 1)

3 G7 n& C4 o: ^]
$ w- b# x" A7 X1 }9 {let k 3
7 C( J& u( B2 u+ z. w4 _# ^9 c; t& P% [let power 0* I* x" y: m* I
let local 0
( b8 O7 B' L4 s+ v: I/ z, ~; W* F# Jwhile [k <[trade-record-one-len] of myself]1 M* L" o( }* J  v  T! Y
[
0 X6 h& _# |" P4 ~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) # c& ^3 C( j0 S7 Z$ e0 Q. S; v! O
set k (k + 1)* m* y: ^. m' h8 W( M
]
) x- m# a6 P; }! rset [local-reputation] of myself (local)" [2 v* H% \- y. k
end
1 ~2 ~/ c9 Z; _, t5 i' b6 z3 S, ~
to update-neighbor-total
7 D' n( `' a. ]  ?1 f! R! I# S+ m! _+ C* _
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' t2 E, x# B/ I9 B

: {( E) X  Z$ M5 _/ o
2 L* [8 \/ o; S& L+ _5 s
end
* `+ H$ [4 a2 T8 I! F; ]! U( d; ~5 R* g& n2 ?
to update-credibility-ijl ' P1 v. }9 E8 u  X
  C* [1 X" U# B5 g7 P
;;
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。
" A6 X% ~4 j1 {& c/ [) ulet l 0+ ]- w# G: ~. L1 p1 T: m
while[ l < people ]
1 a& z* A- H4 v0 h( Q0 @# d! M. R;;
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
! z4 u% Q& `1 z; W7 r[4 K3 x+ ?% r: }1 p/ `! c
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)( _' F* A4 t7 e4 ]6 _" {
if (trade-record-one-j-l-len > 3)7 d* D) G9 a+ c
[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& h) y9 O1 W/ y
let i 3
0 s* g* W# c5 ?$ e8 d/ r  B$ {let sum-time 0
0 k% S. j" A% Gwhile[i < trade-record-one-len]4 s/ [2 w, [! Z5 e$ j2 M4 `: c
[
; U& m% {1 c# P5 @9 bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ z! I- y( Q' y9 }. J( \' ?8 Gset i
- h/ N# `7 z# l8 Z  m( i + 1)
3 P; N- T6 ~6 X8 l& E
]
, `* A6 p; v1 t- s! @$ Ulet credibility-i-j-l 00 N- n: Z$ O! W2 a! g+ d
;;i
评价(jjl的评价)
% o8 j6 e! n+ f. M8 u; T; T6 ]let j 3
" N+ g6 ?2 N4 k. ]+ slet k 49 \7 o2 g1 H7 `* I
while[j < trade-record-one-len]
, w" Y6 i* l6 h1 s! C+ m[
- l0 q( ^# z2 ~) ^2 Nwhile [((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
  A2 r2 K! s. C+ oset 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)1 C. S% h  V& ?1 m
set j
! {- J; m* P* ~- [& p) T) {( j + 1)

9 ]& W3 o- E9 B8 p]2 u1 E" P* W' G# G" C
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 ))
" @& J8 t* e; G
# J, U# U3 U* K3 J( e1 i3 ^
3 o- P6 @  c: s- s: I
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# G8 {. v$ O( B+ e% e
;;
及时更新il的评价质量的评价
" G( {- {/ {" l9 m# bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 m- p7 N" n8 M, m! \$ ~8 `set l (l + 1)( C9 \% y& s+ v: _% s6 ^) O: }
]; w6 f/ z* a2 I: S+ u( d+ D
end
9 |" N8 \% Q+ c( z5 ?( @. e' q8 v( F
to update-credibility-list. a* r  a# Y, U8 r
let i 0
" [* ~! a# c0 w- Z5 p$ g: _while[i < people]; w3 O) |% H, G& T- v* ^1 s; _+ X& U
[9 L3 }  P. C( P% x) N! _( z
let j 0, [9 X2 U# o3 F" |  K# Q: M' D7 \/ @
let note 0/ R+ d7 j) `  ?6 A& r/ O6 N
let k 0: b3 R8 r8 `; K8 i4 b! ?% @; z6 a; r
;;
计作出过评价的邻居节点的数目$ X- F' o$ U3 h, T! x
while[j < people]' N( x; e( E& F2 C! A9 k4 m
[
" I! W4 V" W, ^& v+ Xif (item j( [credibility] of turtle (i + 1)) != -1)
8 `! i; x7 e' q;;
判断是否给本turtle的评价质量做出过评价的节点0 u$ h- V' E' Q0 V. j% e5 L
[set note (note + item j ([credibility]of turtle (i + 1)))2 k; y6 H: C5 o/ A
;;*(exp (-(people - 2)))/(people - 2))]

' N6 q) k; A: P! p) U& h$ M' Eset k (k + 1)4 V2 E. r3 u2 E# [, G# f' P$ s
]
% K& a- J' ^3 d1 P  j+ ^' h7 oset j (j + 1)
( m3 ?5 i2 x: y, P- \$ B]
6 \  B! m3 x5 D. e4 M+ gset note (note *(exp (- (1 / k)))/ k)
- Z" U4 x( d7 c( K" s6 r" Uset credibility-list (replace-item i credibility-list note)8 @% r$ c) i' A! I" q- g
set i (i + 1)
- s& n$ q  d4 [9 C( s4 w. i' ~]) k  D+ ?8 G* R
end
; i" F& P9 ~2 j! R8 |, h7 C
+ @5 r' c6 Q; H" z4 W4 `1 f: hto update-global-reputation-list
3 r9 r3 o. I1 D/ S+ d# Elet j 01 K, h6 E& D; i- T6 o. W
while[j < people]
6 C1 a" S% u# H3 w[
: P% l( V8 O: _- b- clet new 0
( \2 j$ h" J* W2 }8 t' u1 m3 ~2 S;;
暂存新的一个全局声誉& Z4 n+ v" ?' b# {
let i 0& ~: D  Q  }+ f3 b
let sum-money 0- ^/ l! `. t, _4 F6 M( `" }
let credibility-money 0! n" G, G2 ^+ z  U" W1 s" s7 c
while [i < people]
5 u5 N8 S4 F/ x% b9 `[
* I: @' C) I3 n( L1 oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 ?, J) N% h! E( mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- G# p- G2 T' T# T- rset i (i + 1)% ~% B( y) c3 i4 `" e
]
& }* ]1 I% w2 g" y+ E1 X* x$ `let k 0
4 O- i6 r, _' [: m  {7 glet new1 0
  t* r: u4 ]$ x, `while [k < people]
2 {% Z0 u! v; T) |* W[
- _2 o: I, f/ ^5 t2 a, Vset 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)! @. m7 [/ K) s+ f3 U+ ]. Z7 i9 R
set k (k + 1)# G9 c7 E2 `( }' K
]* t& Q% S# J, i1 ^
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- Y8 M4 ]- w  _6 x8 ]! Wset global-reputation-list (replace-item j global-reputation-list new)
$ p4 B/ A4 T$ aset j (j + 1)5 p' G% p' d, I. v, H% P' l7 z
], g! e5 q% g+ ]1 O- G
end! y! A3 X0 r! s4 X4 V. I
2 f6 I/ H: i* }( a; Z

" P/ Q. G) }6 Y( G% R6 C# V- m. E3 @8 c$ I
to get-color
5 u- O  Y+ D, V2 V0 w9 j9 r) x7 P
set color blue

7 v( |7 `! H, {$ m4 p" K/ G9 mend
* }4 ]: ]! t6 c) P/ v4 M8 c: A* M+ Y3 a" B' A4 r
to poll-class
( Z, Y1 d1 {8 L- f) Iend
2 [3 P2 A: s& b0 H+ V* [) g0 Q, B  |  g+ H' M/ ?
to setup-plot18 [  ?" E$ B+ F- U5 W: C
8 I! t/ ^! K: {: [2 E+ w
set-current-plot "Trends-of-Local-reputation"
0 g/ K* A" X% l9 S4 X2 n* a( ^+ O
( `% h$ Y# L0 A4 s. E
set-plot-x-range 0 xmax
, ~& B' f$ Y* I5 ~) _7 j6 C' _
- D) q- y) `& K! L# b# U6 [
set-plot-y-range 0.0 ymax

6 v1 e1 l( C' h& a7 {: zend# O+ j) Y0 j! {9 d! a- j: \

+ `" Q1 J- i" H2 Ato setup-plot2$ z" }3 m  ]: W1 L
, Q' Z+ y" ^0 a7 s
set-current-plot "Trends-of-global-reputation"
! u: Z6 \( o/ H0 d# |+ X

8 ^- }- u1 E  F0 u# Cset-plot-x-range 0 xmax

, r8 N9 W& h9 t1 G2 B% {  L+ p& z% I  f: T' a' q3 d5 ~: d7 ]
set-plot-y-range 0.0 ymax
0 t6 p" k! t! c2 a$ R/ R' I) Q
end
1 Z7 F, z9 ^4 A( z3 k6 N4 I8 Q5 y7 p+ [- A1 d# s1 Z
to setup-plot3
( [' L5 l) n: w. k% P; b3 x4 F* a% w
set-current-plot "Trends-of-credibility"

( D& E4 }! e. k  \7 D- J3 u" e' M: n/ L& ?9 M4 C$ K: l
set-plot-x-range 0 xmax
5 u) |3 J, M3 @, w0 {, c

1 |! I5 w$ n2 Y) f3 xset-plot-y-range 0.0 ymax
) R9 K- |0 e, p
end! b: O; t+ s* h+ ^0 V5 F

  G$ m2 L% j# V- c4 I) w7 K" {6 W* ^to do-plots+ y  Q. P+ r9 W# M& F- c6 d) {; i
set-current-plot "Trends-of-Local-reputation"; {! J0 H1 |, b1 q$ c; ]% j* f; V  m
set-current-plot-pen "Honest service"
9 U5 n8 A) R, ]5 L% Gend
) @. @: z8 m. ?0 {( ?; u0 F1 T% h" l* M
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x
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./ V7 J/ G% P6 O: d( @/ K  D
5 q! r; C7 K+ Q. x: R
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?
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-8-21 18:41 , Processed in 0.029276 second(s), 17 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表