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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
5 ?( y- M; ?7 }) _% M$ x% f5 P) K/ Z. i- Fto do-business 8 [% M2 T0 Q, b
rt random 360
6 I) a) q; h, g fd 1$ R7 J! H- L4 z0 ^9 i
ifelse(other turtles-here != nobody)[* P- B2 T7 ~/ ?, ^& }
   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.0 i& z9 H. T- f; [. u. r
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) _, C; ]8 A, d+ o# c   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* A  I2 q, L: R$ |* o, h" c# U
   set [trade-record-one-len] of self length [trade-record-one] of self8 u% C9 |) `7 q  R
   set trade-record-current( list (timer) (random money-upper-limit))
8 j0 O4 ^- @( }. A* s1 X. y
; j- _: o# M  i" a5 M% c问题的提示如下:
- Q9 n. b3 s! `
, u5 |9 U. c8 X4 R9 }error while turtle 50 running OF in procedure DO-BUSINESS
: d' ]5 U; q& h* Y* ?- B4 C/ i: C  called by procedure GO
0 x( Y0 R2 \; R* E& E7 COF expected input to be a turtle agentset or turtle but got NOBODY instead.
( ~- R9 C& T- S% c- k& ^
(halted running of go)
/ |' l* a* j  S0 L3 {! v6 U2 T! j8 o* a4 d! o" b" |: p! x
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~~* d/ Q5 O; E. ~1 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) Z8 s6 E  X& ?* N  n  Y/ ?. @
globals[4 t+ H) G- x5 q4 Y
xmax& P& n7 U! L! _& s$ j
ymax: Y0 t1 C5 U7 H, x
global-reputation-list
, r4 W; c9 a' N2 p! c# e; g4 A. j& p% b9 `
;;
每一个turtle的全局声誉都存在此LIST* C$ p) S# O: s5 I" i' V
credibility-list4 I! ]$ i- U1 R. I! h
;;
每一个turtle的评价可信度
. D/ q5 Z3 e. L3 z9 ]honest-service
( [  i* u! d0 S% nunhonest-service
5 r9 M+ f: _) y# W) U0 koscillation
5 K' i& N3 h% x) C9 @+ T- r$ e; |rand-dynamic
/ u8 b( r" G% m  o& A% _]
* D- [5 @, U, N0 n. N# ], G% y- e) {1 ?9 N7 Q
turtles-own[  Z( l" Z$ X4 Q% Q. I; q; y. `
trade-record-all
7 b# Q: k) |; G8 W7 c$ `;;a list of lists,
trade-record-one组成& Z- X% @- _2 i! V2 `: C9 `
trade-record-one4 o; P3 k/ g5 C
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& h* E0 J& a1 H) Z

& R  r9 h) y3 d+ H0 i: A;;[
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]]
: V3 i6 N+ a2 ^8 V9 O1 qtrade-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]: X: O# x4 a0 ^# f/ L1 b9 K$ q$ _% v
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; w1 n8 K5 Y( J; U
neighbor-total9 l+ m' x( |1 |0 \8 ~
;;
记录该turtle的邻居节点的数目
2 g) H4 J$ _# c7 Wtrade-time
; V& Y6 ]  N, D' a) j/ ?;;
当前发生交易的turtle的交易时间
! O3 X; N6 p& |) R/ yappraise-give4 j7 Q  P5 ^" g. ^3 W  B# x
;;
当前发生交易时给出的评价
& t+ m! @& K7 e" q$ _7 uappraise-receive
, c- r) |7 {; I# {3 ~! };;
当前发生交易时收到的评价* \  E  Q9 a; r3 c
appraise-time; T. H5 R$ g+ y; {5 |
;;
当前发生交易时的评价时间% b: ?7 l/ C4 v. H+ C  w+ U
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 C0 m/ {3 I7 ^0 k4 i1 P* A1 jtrade-times-total
( g# @1 u: P% D- Y, @3 O& y: y;;
与当前turtle的交易总次数% A: G7 ^6 w: l5 g2 k
trade-money-total
- R" \3 P; m( N;;
与当前turtle的交易总金额
/ p# Q/ j) u! clocal-reputation
+ H& W4 w6 ]/ o" ?1 bglobal-reputation
( s7 v6 K/ [2 w9 ocredibility
: f3 d" C; S/ c5 D+ v;;
评价可信度,每次交易后都需要更新1 [& w# X7 ]  g
credibility-all$ s- ~7 E; Q1 X/ k* F+ b
;;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& j8 B5 E. K/ ^: v4 F8 ^* m

$ R9 i5 V( ~# z7 z+ f' a. V;;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* C. |' m& n: C
credibility-one/ _. d9 D  a5 K# C' V2 {2 N3 E
;;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
. |" K) y' R( P, t/ f/ V# R6 tglobal-proportion0 k# a4 n$ Y: I0 y8 b$ x+ F
customer+ a% V3 b! H, W& V
customer-no+ W- h2 U* J4 R% K* x7 k
trust-ok6 ^: W* F' G. l' j5 f
trade-record-one-len;;trade-record-one的长度! n* T" S9 z0 K  p/ Q+ C( G
]
  b+ R0 c8 I+ Z: R+ A" z! a) I- [; R1 {0 C
;;setup procedure
: ?5 p8 j$ b( k( b1 b( ?6 c; j/ ^. v- I. O6 d9 {$ h# i; l
to setup
, G1 E/ _$ [$ k& G. S1 n& d
  F! _' ]' ?% O. C; T+ s& R6 o" Lca

+ V5 z2 `) m" y5 T2 {: h0 j2 Z4 Q
initialize-settings

! Y" Q, n5 ~0 k) r/ u/ ^3 M5 `# {' w+ t, q3 r- n
crt people [setup-turtles]

* u# Z  z+ ^: l- R4 b8 B! w) R- R5 Z
reset-timer

% m: {2 c2 c& B, b7 S# G- j
% V' a! k+ [5 n+ F: R! V& {$ _poll-class

  E3 D* b$ D8 R% l* X# s/ p" B& Z  U
setup-plots
- _! T5 `! x6 [8 `9 A

/ k  t4 A' C3 f! p6 Wdo-plots

# N6 _" f; D# F/ j8 }# f6 oend4 D/ O+ i; Q5 {, }* V+ _8 {' L
$ l4 A; g6 V" Y0 a2 |
to initialize-settings
& |* J3 k, ~3 d. D) o4 X  w$ v* i9 V% H6 p2 J; P7 `! G, O
set global-reputation-list []
$ i& z( }8 u7 v# D

7 ^3 P/ B3 U) t: H4 L& l4 oset credibility-list n-values people [0.5]
& n$ E( o9 h2 |# d( l5 }2 d

! ^. \; w* s3 N5 @7 q) cset honest-service 0
1 Z8 E: v& p/ {: v0 m  M

2 d( G- H3 z7 N( qset unhonest-service 0

  ]$ V" _- z3 w, I6 E9 O% q1 \  V2 i) A
set oscillation 0
" g$ s0 W7 j9 O" S4 I: x
. f3 n8 ~( Q5 [, D! e% j, u
set rand-dynamic 0
8 f) w/ s/ g- R. w) C
end( Z: K1 A8 B6 X7 o8 C/ c

* X* w5 w& K6 _% K: ^to setup-turtles
( ~8 s- z  y( Kset shape "person". d6 I9 ~1 c3 t; F1 _' \6 S
setxy random-xcor random-ycor
- J8 v. e% i0 e$ l4 U9 F( Sset trade-record-one []
) V) X& C' S$ j+ l9 \

* P/ }. |, @- d# x1 [$ \set trade-record-all n-values people [(list (? + 1) 0 0)]
. y1 w; E1 d/ `8 [3 {

* [$ w- T8 e2 `set trade-record-current []
& @0 m$ W. D8 U8 Yset credibility-receive []
: P3 o1 q: a8 |+ Pset local-reputation 0.5
/ m( I$ {" E* [% a- v9 Qset neighbor-total 0' Q) a# c" M9 t: y3 D: V& V) C0 v1 E
set trade-times-total 0$ V" {' l1 ^" r, X4 x- W+ G7 u/ r
set trade-money-total 0
! l9 E  C5 {# W$ G! z9 ~set customer nobody
8 B7 s6 y1 B- Pset credibility-all n-values people [creat-credibility]
! P7 l- |4 Q$ D2 H: Aset credibility n-values people [-1]
" q% b% j+ W  r0 iget-color
8 e2 E1 W/ @1 s9 ~5 I" C1 Z$ B5 N6 G

) s$ f, ]. ~  P7 Y3 _end
7 @7 t. o: a! u
* F$ K: o! f( f, O- Tto-report creat-credibility$ x  C, Q( K  @- i9 ?
report n-values people [0.5]9 v& d. C8 B. M( i5 n# F/ U
end8 G2 V$ G" n: s1 }$ g1 b
9 I2 ^8 e+ R+ B; u
to setup-plots; ?/ y. n$ U, y% @( A

6 ~% ~8 ?/ t1 cset xmax 30
( K/ l* U' D& H0 @1 _

# A+ E. x; N3 ~3 f% |set ymax 1.0
) f/ h8 k  r  t) T
3 B# g2 l1 F- d5 `! Z
clear-all-plots

& w6 o: Q% l  W, Z- N& i
4 ?; e+ r, S1 a% ~7 U' E8 Wsetup-plot1

" e4 \* g" m+ j- f* Q
5 W8 m9 c+ V. R4 e  Zsetup-plot2
4 T. m- v% a# h0 y
4 X) |: T4 h: u
setup-plot3

5 g& Q' ~8 ]6 P, v8 Z# m  nend
6 K( |# ~' |* L% ?$ C' C& ]: V6 }5 C
;;run time procedures
+ R4 E* K+ |! P* R: x1 ^
1 v% m5 k. W$ ^3 V/ g  R4 _' N& `to go' d& f$ U" F; P% o: |5 F

" k6 T! `9 A; Q7 c, Hask turtles [do-business]

2 t0 e1 S# z8 n9 Pend
1 W/ v$ m6 i. t7 ^  r3 ~5 ~
+ A/ l+ B" s  c2 P* s, Eto do-business 3 J6 |8 _9 [, G* `

( N5 Y7 h% |0 j. w7 M1 j
5 V3 s  D' |& c2 |" Drt random 360
0 T( [0 |. H: ]# c% J

. }4 u+ f3 s/ \: ffd 1
' `, m. M. ^7 d' Z0 a
  H- Z! Q& y) k) c* f
ifelse(other turtles-here != nobody)[
: a0 f( {8 V4 M* m8 W, R9 ~

/ H3 d5 h9 o5 M) z) C! Nset customer one-of other turtles-here
1 Z* M4 K& l" N+ D) |1 o* i* i

# q; i7 }( y* _7 X1 K;; set [customer] of customer myself

/ k8 N! C1 J; x5 K1 u5 u2 K( d' h9 ]+ u3 C7 t! \' @) V1 J4 q/ Y
set [trade-record-one] of self item (([who] of customer) - 1)
; s* w, J8 S- O1 `  m: O! p' j[trade-record-all]of self
# K, M( z7 _+ K% l% g' m0 m;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 F. _  i2 \9 X  v4 D( Y9 P, b/ A
7 y" {+ B6 R, k$ Q9 R- \; Tset [trade-record-one] of customer item (([who] of self) - 1)
+ p' I( ^8 y* r$ c/ I[trade-record-all]of customer
' Y* l8 i1 h( k- l6 U) H
2 v5 e4 t3 _. [: p
set [trade-record-one-len] of self length [trade-record-one] of self

0 r% t* h6 l; c7 \" R/ c, q& C# A+ ?/ F" {
set trade-record-current( list (timer) (random money-upper-limit))

  Z' m8 q) G) C( X. K) y4 r& K( \# N
# m0 @2 I& k6 xask self [do-trust]' V/ _% [* T* Y
;;
先求ij的信任度
% d6 h" a1 G' k# l. z  |9 s! A
. s& s2 r. Y. x7 A  H/ ]9 Aif ([trust-ok] of self)& A6 j+ ~9 v% E* J7 m5 F
;;
根据ij的信任度来决定是否与j进行交易[
6 \. Y7 p5 g2 ]# q0 m% j8 cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 X$ n( j% c  V7 `( Z0 B1 a. C, W: [7 C! q1 R6 ?  ]
[

% F% R, W' l7 A$ O+ k' m+ |" C$ R
9 X# g6 m. j+ h1 Ldo-trade

1 _3 V, D: I6 I  M  D- F/ J0 N2 r3 P2 b2 z3 X
update-credibility-ijl
4 ]$ O' n: m" ~. b0 b; R

6 h7 s5 i( _+ h- [+ Iupdate-credibility-list
+ Q7 L# D: i) R* ?3 D3 _9 |2 X- D# J
5 [5 s5 _# p! x2 Z9 v4 @8 M3 }

6 M( n$ ?; G/ s8 O! U: `update-global-reputation-list

& F. j( h5 N6 w5 U& a
4 i- o# t6 w" B( g# Ipoll-class

' w2 x& C8 W$ n6 y- s
: ]) {0 Q- M  i# Yget-color

2 I1 }# }* h/ {  N+ F! v; C/ ~6 T( ]
]]- r; e* \) _3 X, q9 x- M) T6 L, f

* f; b# k1 w- ]. F' N;;
如果所得的信任度满足条件,则进行交易9 M/ a- H/ h5 v, j5 _
& w, I" S/ z; [
[

/ ?5 L( E( c  \4 J$ ^
; _8 }7 @4 r$ Y5 \5 g2 vrt random 360

: z" j  u# C2 j  v% Q) F# B/ ?8 c. `) h4 v
fd 1
  C/ M9 u' o# I6 _2 A- X
3 j/ @6 k$ W6 D9 N$ E  p
]
! O1 _5 \- `; O4 G6 r* q
' q" m2 ]  A, n- l) a+ X
end
( V1 \$ w$ q. {
: b( [* l$ s1 D7 ]; a9 m
to do-trust / S% [1 Y! B: ]% j" F* q
set trust-ok False
6 J5 ^( |! f/ p3 h9 Q+ S" ^8 \3 i; ]9 }/ @: U

4 @( ?) W5 `4 H, o' H) j$ Mlet max-trade-times 0
, M& L3 ]* `" a, ?; ~( l1 [( U2 Oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 j( g$ |7 i3 w
let max-trade-money 0
$ j' O5 `$ `$ a0 p/ ~9 [foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 s& Y) M1 e3 o4 Vlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) ]: ?% Y! e( f9 ^6 c' x$ R. Y0 }* s; T# k6 b) K' v

7 S! _5 ^. t2 g! C  ^* M( ~! A, xget-global-proportion
1 d4 \  N' `8 T" e5 X9 o" elet trust-value6 n  J) m8 J6 y1 N5 k- V
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)
9 `9 T/ r6 `+ M6 Y# U. B
if(trust-value > trade-trust-value); {8 m; \5 M; K5 z  ]- s
[set trust-ok true]/ t0 }9 p" E/ D) i! w" z0 @/ d
end
2 S4 q( p2 F! u! ~% z) x
7 x* f! f$ y9 V  Tto get-global-proportion4 o: X7 j6 O' Q5 |
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 m# x, W* j1 j* _* Q
[set global-proportion 0]
6 ?# g$ `. k$ [0 H[let i 0
* P& ~1 R/ m3 L2 Z4 Z+ alet sum-money 07 q- m/ L3 b0 K1 p
while[ i < people]# ?; M& u# O4 J7 K9 G
[
# A' z! R$ W2 e0 Aif( length (item i% |: {9 {) M4 I  T+ c* b7 t
[trade-record-all] of customer) > 3 )
& \4 m4 `& X0 x* O, t& b8 F
[0 k& u2 ~, l/ ?" H
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" N) g. p$ N' G9 j5 R* `' W]
0 H2 w6 N% E- d+ r]: U5 q' Z& K" R2 c. l
let j 0$ S: h- _4 Q! ^9 D* n/ e# ]
let note 0) Y2 [0 ]' }# |% Q. W
while[ j < people]( t& i0 |* L1 A2 h- B$ b  A
[
* m& w- P9 W$ k& r. hif( length (item i
. E4 R2 p, w6 V5 m[trade-record-all] of customer) > 3 )
' u+ c/ a" m: q9 Y
[3 }6 x  I& `2 g
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)9 ~# P+ u5 q7 v! b" z, X( w/ R, R* P
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" ]# Z) r: e9 D! s+ y/ W
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ f) ?* {: p% Q4 g* ]( [9 o* }: s]
, b7 m  l, T/ m9 n! M* _]2 Y$ q7 H5 P- x$ Q; o5 w- D, H1 ?
set global-proportion note
& e4 V# `5 O# @- k$ z- R( Q) ^]3 [0 j; v; s8 X& K
end+ O) H& Q( _$ A" P0 g: C. w
% o' d2 \. e3 u: @
to do-trade  w  ^. l4 V) ]8 G. o9 `
;;
这个过程实际上是给双方作出评价的过程
& B; O7 Z& o! e0 d0 l+ N8 K2 iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ E# y0 j6 C" F8 w  E: b: S% R; G9 e, nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 f" F* ^( r4 q) S- V0 H
set trade-record-current lput(timer) trade-record-current6 s1 e" v; q! h! [7 v1 i  W0 |4 z
;;
评价时间
, a0 P1 s1 `) }* l* _ask myself [, y8 e  g' G& [
update-local-reputation
8 y. v$ P/ O& B' m- W  ~set trade-record-current lput([local-reputation] of myself) trade-record-current
. G$ Y% ~+ [7 a]
( q4 z7 [6 @# [! z: Rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, l& Z6 L4 Y/ e: E6 b2 I7 s4 M
;;
将此次交易的记录加入到trade-record-one
% a5 z1 ?8 ~7 f) e/ t% [set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  O7 b) h4 [8 q( I% x$ s9 c
let note (item 2 trade-record-current ); V8 Z6 O2 v) R3 q: ?
set trade-record-current! D- t9 s$ K. K% H, m# z
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 ?- ]/ E4 `, tset trade-record-current5 D9 ^* i! g2 u
(replace-item 3 trade-record-current note)
. q% }' J7 ^1 k- h6 j2 ~$ ~4 w
( v6 B% E; Y0 ]& d8 x& _4 r

) N0 Q* A- |; S  e% ~ask customer [
9 L1 g0 n$ M* s$ Hupdate-local-reputation+ Y8 M5 j" t5 K" P8 }
set trade-record-current
  k* V0 a4 V1 {+ u: e! l(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& j6 V. C9 U/ }- m7 T& c5 S) u
]/ Z7 Q8 N) A3 T( `% c  K

" X/ S% }5 O  c2 o; Y

: j3 ?( t; h; Y' j6 r; iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( T/ k9 S! i, u' u

7 g# N8 y. u  T3 v; x( U# Gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  Z# D7 h2 H6 ^  g7 D7 @8 M! G;;
将此次交易的记录加入到customertrade-record-all5 W& L; D2 Z# x: q  b1 g
end
- W0 f; x* J" s4 f5 S0 `) b' P  l# O
to update-local-reputation
, r/ h8 l0 {4 T- B" Z, o1 K; [set [trade-record-one-len] of myself length [trade-record-one] of myself
3 z6 F/ t6 [+ v2 r1 n
3 F, x, z1 E! O) ]' p- a
1 `1 W/ m( B) n" E: v;;if [trade-record-one-len] of myself > 3

# H5 v, a6 c: x6 w2 V3 Nupdate-neighbor-total1 o" e2 y" Q& k' u: v5 ?9 @7 q
;;
更新邻居节点的数目,在此进行, h. m; g) c9 P% S& N5 J' @5 w
let i 3
! {; G- Z" _  e  \. d  mlet sum-time 0  p- M# M/ t& N0 ?9 T3 a9 F* h
while[i < [trade-record-one-len] of myself]+ s8 ^! [7 {7 o) u
[
9 u# a$ M/ h7 y8 F9 t/ ]set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 Z, [1 d) a" ]; tset i: |+ R. b8 ]2 {7 k0 e1 B% o
( i + 1)

0 q* Z+ J8 E3 Y0 |( Y) S% Z]
; Z. d: d5 E5 h8 ^5 z4 C/ Alet j 3
" o9 Z5 b+ X3 r0 I$ T2 f% tlet sum-money 0
, w' G- U8 X  |2 X: \while[j < [trade-record-one-len] of myself]4 {6 `" ?% u$ J$ C' q
[* e8 }/ x4 i3 _" h& e* 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)
8 m& U5 F) `3 p, D  ~2 Aset j# {: J; u/ p5 B) p  X
( j + 1)
; a! @1 R: M  E- A( U
]) c/ l# k( z& j% ?0 G1 K
let k 3
" o6 W+ l8 z5 h2 ulet power 0( n7 N4 N) I: n! d: _" U, f) ~
let local 0
4 S  t+ Z' ?* c2 m( kwhile [k <[trade-record-one-len] of myself]& E8 }  g; R0 w2 `6 d/ p$ w
[
& o" c4 j  W. d$ b% U. m7 I4 Gset 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)
' Z8 Y, Q! h8 i1 g' _0 Vset k (k + 1)
6 A0 }, K4 J2 s# M& m]+ r% {8 s, K$ q1 ~, y
set [local-reputation] of myself (local)4 \9 G- H! U' |5 V
end
' O2 O% H" I; L6 T
  M) m( m! c8 {to update-neighbor-total: M3 x4 X# i( I3 @# o) R/ _  R0 ~
0 L# S" [- D( e; Y" P( l
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% p" B' A; {) [7 ~3 N9 ]$ t4 _4 p" W$ m; Q9 U0 E# U

6 F3 H0 S0 T/ W% u( Z4 u) yend
( ?# O2 A1 Q* C. q; \/ k
% D5 A7 }7 a+ U2 R  y  H6 {' fto update-credibility-ijl
5 \1 E8 W6 X- M+ F0 ?, m. M  R) n7 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。* ?9 o  T& M0 f% U
let l 01 @! P9 x5 Q0 G5 p" k  P" R1 Z$ N
while[ l < people ], W2 i7 D( b: F2 K' n' ?5 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
: e7 i! A, J' V$ R7 q: R& c1 n" A[' {4 X4 H+ X' F- `, |- D
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 P' S/ L- N; q. u
if (trade-record-one-j-l-len > 3)* V0 W$ q& v- ?
[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
5 o+ \* m) T& I1 G1 |# n) rlet i 3+ Y7 s, A8 i) B) d/ T2 |* ^
let sum-time 0( o) k  N" p( L% x6 @0 Y# ^5 I+ u
while[i < trade-record-one-len]
; e! p" S' d- E6 `3 H& r[3 C1 g  w2 K% a% N
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. @" ~  D6 p  f6 [" f% R% ^set i
. |1 q, k6 A9 Z2 I  V+ T, a( i + 1)
- i/ K. L* ~5 e1 M9 j3 d0 P
]$ ?0 G. J2 Z' r" A$ k& h7 V5 h
let credibility-i-j-l 0/ ~; ?+ Q: ~4 V  U5 ?
;;i
评价(jjl的评价)
% W8 F# r3 B0 H0 t, xlet j 3
4 ^3 F- c! B2 Llet k 43 i3 @' f2 @* V' O0 E
while[j < trade-record-one-len]
' J1 Q3 ^' P3 _/ g  J) ^# k[4 E( y2 e* F+ r
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2 u3 B+ v" X9 n4 T- 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)
' v/ R. z4 a/ |' D  kset j/ ^0 S! s" J" L* F
( j + 1)

: b* I5 F# N# e9 T9 |]
4 u- Q; o7 \3 L  J9 O, j$ o* 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 )): q& p6 L1 f0 J2 U" u0 E

. {9 ~& }2 Y. V
$ H7 T/ C. b1 g. x' w' B
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* q. u- y2 R3 d/ k. H0 v+ Z;;
及时更新il的评价质量的评价
8 Z; T8 U0 N1 a$ F7 r. ]) B! zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 G3 |, h7 r. n$ q
set l (l + 1)' a% }. l' V# l5 N9 H' X
]
# j# W5 a8 c1 }7 h! q4 f# M, Bend
& `# t2 z, _) R7 ~$ {) G" p: i
) M+ K( U3 P& M8 w6 o6 Eto update-credibility-list
6 {- f( X( `! c; ]$ s  h4 V7 U5 klet i 0
5 Q) Y5 V- Q& awhile[i < people]6 T5 @+ j/ {' ~3 m$ J' q
[
6 @) ]! z! C6 z5 i9 Nlet j 0
4 M; d. o0 }7 Q0 J" zlet note 0
* z  Y) X( {2 R8 U. C; Olet k 0
% J. y! c5 ^- n5 }. R;;
计作出过评价的邻居节点的数目
; F( k& U- H) _3 a9 c8 \9 }& Qwhile[j < people]+ M' N! P. ]8 }" n6 s
[+ m$ Q' r* o+ ?3 l6 o) G& Q8 N
if (item j( [credibility] of turtle (i + 1)) != -1)5 f" Y, G# h8 H, P2 e* U9 b
;;
判断是否给本turtle的评价质量做出过评价的节点; b2 X5 ~5 ?& W5 p& s
[set note (note + item j ([credibility]of turtle (i + 1)))
* K; L' S, t: ~% i. q. c;;*(exp (-(people - 2)))/(people - 2))]

, W" ^9 y* _  T% @- Sset k (k + 1)
4 f$ {8 n  N1 G& u* j; H5 u]
! P: `+ ]3 O# dset j (j + 1)
- r8 }. b0 r  G* L2 n  R]/ [2 P2 N5 x; x- ?1 h
set note (note *(exp (- (1 / k)))/ k)
8 l# W; c  I: T7 U" C9 lset credibility-list (replace-item i credibility-list note)9 A2 H  l" j1 G# k8 M3 _
set i (i + 1)
7 {, K- v6 l& Q2 `6 p) E: g]8 X: E; b1 ~1 \9 ?& |' j
end/ h+ Q/ ]9 ^( }: R' R9 u
! C$ i6 _' U2 n5 o: j- {4 F& w. f
to update-global-reputation-list
' V$ u+ F( N- Rlet j 0
- H8 b4 P4 H" _; G, [while[j < people]
, j# F- l9 }. L5 h$ u# c8 u+ @[
  Q4 w1 b, X! I6 H- g1 W' Hlet new 0! H1 K* H; ~6 P1 l
;;
暂存新的一个全局声誉
7 `8 ?% p: A- K! ?* ilet i 0
2 P: E: ~) H$ `; R4 k# Z3 Y' ^; hlet sum-money 00 o% w" z; z6 g
let credibility-money 0
) w" K+ I  ?9 @% a5 q4 V$ A4 R. m9 Swhile [i < people]: m7 u/ L9 R9 f, b& N
[' J) j4 I0 u: T! ?5 Q. p$ B! B3 K$ K
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): c$ ~% y* S' z! N$ }. C2 p+ s/ x
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' P# y" F3 {( F- ?  c, L, c
set i (i + 1)
7 U* T% h+ G9 X9 b]! m2 I' U3 L' ], i$ B
let k 0
* M( k/ O  A, `7 C' {- ?& L' ]let new1 0
* ~* e4 C+ l4 Z" L3 Lwhile [k < people]& A4 a& c  h% ^% n1 [
[
  A' B, E7 X: \% @9 [+ F2 s( nset 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)! D0 x* {) c: H; L- k- c
set k (k + 1)6 Z% M! d. n8 G' j. e+ b7 z! v  j
]* H+ U3 X# w  X: `
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 |7 ^' V& Y: z2 {' j0 w# {/ uset global-reputation-list (replace-item j global-reputation-list new)( C# W" o3 ~7 p* x# z) d
set j (j + 1)7 ]3 ?! d$ C3 ~  ?) o
]
2 ]" Z0 t- j4 L$ B! f- Gend
0 W+ j* T) ?2 i! G4 Q/ B
& r" W/ z& u& T% z: s
- }  ]4 v7 V8 j. i1 V( N( U: u/ [5 A3 K6 X0 C% u8 x
to get-color
4 {% R3 x) G3 k2 U( ?2 [% A4 X5 e! }7 C# w" p
set color blue

* O7 y# w- S! w9 r2 W3 @* i+ Nend
6 h( l) w& ~$ u1 F5 s& X+ E" t) t1 x8 U( J- R- M
to poll-class! v  A: X; m: H
end% w( h) U: R9 U' ^# O$ s$ s
! S" t: Q. H0 x5 G. b# ^/ U
to setup-plot1% w7 [  n: f/ }6 `* o) W. C* k* |

4 U* ?) l2 C9 D6 K+ }6 Mset-current-plot "Trends-of-Local-reputation"
/ e3 ]9 t3 R1 g+ _: X4 u
0 V1 R3 H8 z) j& R+ I
set-plot-x-range 0 xmax
' Y# Y% s# i$ I7 p- l6 ^
; a( e6 ?; i8 h* N/ v6 f* l+ l2 h. X" H0 g
set-plot-y-range 0.0 ymax

" Q: u7 J: ?" K* c5 D) I( dend
! w8 s  p) r. L" ~, C' G* n$ m* Q  W. [+ p: C/ {" T( N1 L) J; R
to setup-plot2
) s/ Q: J; s  F
# ], V5 k: @8 s' lset-current-plot "Trends-of-global-reputation"
; \# S5 _/ K: }+ K5 D$ q* j

; _2 k" Z/ z# ?& P+ j7 f$ X0 }/ Kset-plot-x-range 0 xmax

5 i, l. Q: ^7 F8 A
4 ]6 ]1 s+ M% `" K  P' Z) bset-plot-y-range 0.0 ymax
( G' v4 E- C# b/ \5 O, X
end+ O4 O/ X2 y& P3 _
$ z$ Y- z. P- P  W4 W" b$ I5 J5 `
to setup-plot3$ s7 k; p7 E7 m! p  `" E5 L; L" [; a% [

) _6 {8 J& D& ~set-current-plot "Trends-of-credibility"
! ?& Q& N6 \- @9 ^2 N" Y
; x5 j7 {/ m6 i# \- _! ?
set-plot-x-range 0 xmax

) B9 _6 U# N1 b# w
" t; g# F7 |( S! @% [" B5 oset-plot-y-range 0.0 ymax
6 I4 o& U2 e3 [' Q$ i2 E
end
* K' \5 A2 v0 n( B- n
! N2 o: k) f9 \6 [: a+ Zto do-plots/ r, u4 U5 G) [) v6 B
set-current-plot "Trends-of-Local-reputation"
5 F5 ?. m5 Z* R( \1 y: ^2 n+ Uset-current-plot-pen "Honest service"7 e+ }6 A" y/ j1 D9 u$ _6 }
end
( b/ M5 C& d5 v9 e& j" ?& ~. k, i: D
[ 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.
8 s/ E1 O0 N/ ^: J5 L8 D, g! r+ n) A  f$ T4 Z' k& x
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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