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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:: h2 b* L+ p% d; D2 L/ U) i
to do-business
: D4 y& k0 K8 g0 n, v+ e6 C8 c- u rt random 360
- A, v/ O% s9 y3 u1 E fd 1
, Q& U3 W7 h1 V  A% s ifelse(other turtles-here != nobody)[
6 ]4 p( V1 U1 |" V   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., V8 W" s- D. U, i
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      O$ X& T6 x8 P( R4 s
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 l+ p4 r( m1 q; A/ B: S- Z, z# i8 c
   set [trade-record-one-len] of self length [trade-record-one] of self
" l/ l9 [5 V1 }3 K4 \1 V7 y  q   set trade-record-current( list (timer) (random money-upper-limit))
* T1 n/ o4 h0 l# g. h7 ~; b7 U' n' K
问题的提示如下:
# f9 _0 Q( B2 I8 C+ ^/ P- i* k0 `6 j5 }6 ?1 i
error while turtle 50 running OF in procedure DO-BUSINESS" H; z5 Y6 k% M0 w
  called by procedure GO! i1 l) p  w) C0 e: W) g/ t) `
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ f+ h& a8 h" X' s5 Y
(halted running of go)# i# H; z8 F% W1 G
* [$ B- a* O0 `/ a% l& F0 B+ t
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~~! v1 A( t1 Q' R' J3 ~% v. W
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
# [1 l. m, J) G& U; @globals[
9 G# Z0 R% N* j7 _* E- b: @xmax6 o9 b0 C, ~. `6 [- y0 C
ymax! Q6 _; f0 q2 W
global-reputation-list
* M/ O, v' R+ ^4 I) U2 n2 q" u1 Z* u) |3 I" e7 ]7 F0 ?8 m
;;
每一个turtle的全局声誉都存在此LIST
  i  J9 K5 M6 f. w% v" p' Ocredibility-list" K. S$ U. m) a, C8 d
;;
每一个turtle的评价可信度( O9 x9 ^# ~3 }- z7 }, G2 \
honest-service
3 ]# u/ Y1 t* C' K* [unhonest-service
  [  C8 r3 I2 o& Z' Ooscillation3 J& U  h! J1 g- k+ F
rand-dynamic, R) G0 A) c' T) D# m( [5 R- C
]
% j' }/ Q: [2 P# E0 T% b  Y
$ y1 \- v  S, R& Uturtles-own[: N! p3 V8 U8 Y) J8 y; N
trade-record-all
6 ^+ t4 {% W, R) a! p;;a list of lists,
trade-record-one组成
9 {$ R6 a) ^$ T  j0 T7 v$ a3 Ctrade-record-one
. Y9 O+ r) Z7 ?; j( };;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ ^! Q* ~+ Z4 \2 r: Q
2 L; y# M* ?3 t% Z;;[
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]]; o0 {7 z3 T% J
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], ^6 s  |& f  E3 ^+ x3 R$ a$ h
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
0 ~% q" z+ j  E/ \8 l9 d5 |3 Tneighbor-total& X+ i9 ?! w$ f2 i
;;
记录该turtle的邻居节点的数目
* x( D3 q' v# C# d' \7 F8 Z+ Ptrade-time( o) K9 I  g5 b3 Q+ n( u  [
;;
当前发生交易的turtle的交易时间9 {" H4 p9 ?+ g+ g% C0 i
appraise-give
) M2 u, P; w/ m( z) o;;
当前发生交易时给出的评价. a& d# P" l# E( \  v7 @# W
appraise-receive
( I' ?  M, o9 a3 c, ^, m;;
当前发生交易时收到的评价9 `9 N* X: ?  \8 c1 t
appraise-time: x) q5 W2 X, g, v# T
;;
当前发生交易时的评价时间! l* a; i" z# }" B7 h
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
9 O" @2 l- [- Z( q: b  n5 A& x6 Ltrade-times-total
( o0 }3 g: Q% s9 i! L;;
与当前turtle的交易总次数: _1 J) |& ^! q/ b7 M5 c
trade-money-total
6 I1 V$ K0 S- j5 e" T- K+ \( d  _;;
与当前turtle的交易总金额# ^) U% b& P5 @+ d  C6 Q' O& {, o
local-reputation. U- Z1 k  T! _4 R
global-reputation
0 C9 E6 P8 y8 [0 }6 Qcredibility+ B$ P. j. p0 O, R
;;
评价可信度,每次交易后都需要更新
% ^9 ?8 x/ ~3 T7 \0 G! Mcredibility-all
; }5 E& [1 V1 x) A;;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! R9 e- ^9 i; H9 b
7 ^' L5 q; C" N8 N7 a
;;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. c0 B' R6 G& M: G5 J
credibility-one7 ~3 }2 ~+ J7 J8 _* O
;;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
0 S% M) j4 d, E/ m# Zglobal-proportion
7 h2 o( y! Z3 \7 S. G3 |5 Ncustomer
; s% s: }( W, Wcustomer-no" B% O% Y+ h7 b
trust-ok7 I/ }! F2 \7 e; Z0 Q
trade-record-one-len;;trade-record-one的长度3 H# ?! W  K4 a+ w; W4 n1 ~
]
7 k7 E& @7 q3 R: g- c5 W4 @+ u& s
;;setup procedure) P( f) Y- P7 f
( ~/ H6 E0 M7 P6 j9 P
to setup
7 i* _4 y6 i+ O# ~; V
2 G% A* ^/ H+ yca
* i8 V  R9 }0 Q' K

0 g1 n! N5 v" w4 Dinitialize-settings
9 {( @! m* D: S4 Z* b1 v0 ~
" ^5 Z2 V, c+ q! H" A) g
crt people [setup-turtles]

, s# E9 ]. O, d8 L* e  m: B+ {& H& e- Y7 q& K7 ~- Y* a, e" ^
reset-timer
! e3 m. @: N# n4 W
' H9 k: B" U, A2 a( W' }! C5 C
poll-class

* i( D5 _/ l. A3 M1 x" _) b. L' J8 o0 x" X: R
setup-plots
) z" N0 _6 P( `( j

5 d5 A" H3 c: `  zdo-plots
- w4 C  l' b% |) |  O% z# c# U
end2 _: X  [0 p* ]
5 m, B; h1 O% Z$ n* {4 b
to initialize-settings' J( q: K, d" U% e. X6 l5 K6 E

8 b& Q$ Q3 Y- Z& \1 u* Tset global-reputation-list []

) q. m# m) d* W) z7 v1 h  y. _
& b" j% W/ z+ T; \2 tset credibility-list n-values people [0.5]

9 b. P. t- [2 R1 v# g' ]! q7 e4 s+ _- g4 Z2 j5 j
set honest-service 0
  G7 f* F/ B: k
5 e$ V: L! M+ f* a  j, ~6 G2 F6 T: I
set unhonest-service 0
: y/ V- k+ J5 W; w/ ~% l  d3 q+ q

& r  g4 E$ b( K7 P9 y/ b0 F  Mset oscillation 0
5 ~. _1 j* m0 u$ W& o8 L
- Q$ I' C* I' w( {( o: p
set rand-dynamic 0
" O. O. Z' ~- f
end
- ~0 L+ B8 L+ ?2 m$ j5 `; i
1 ~- f  C5 \: l6 U. t5 \- nto setup-turtles 8 z1 t/ p+ A8 }* w- i/ j
set shape "person"
9 [# V  |+ g/ E( M6 t+ Lsetxy random-xcor random-ycor1 j9 o& ~. s6 u) y  r
set trade-record-one []% Q1 V# ~$ l( a4 s* ]

7 O% m3 C( q. F2 ^! n" M$ q. zset trade-record-all n-values people [(list (? + 1) 0 0)]
; f+ |2 K5 l+ J  R$ \
8 h" M. n" {/ H' D
set trade-record-current []5 x3 |3 L7 s/ m0 \$ ]. S
set credibility-receive []# I% i0 d: D& L6 q* i
set local-reputation 0.5
" `- a$ o, R$ _set neighbor-total 05 f' K( H# S0 P9 u1 Z
set trade-times-total 0
* R9 V& k6 z3 F" R8 R6 ?set trade-money-total 0" N# V9 r0 P- a2 I# e" w  p; j! i! @
set customer nobody4 T6 l. I1 g! i' o* u
set credibility-all n-values people [creat-credibility]6 v% ?5 C! z& o$ Q# |* G
set credibility n-values people [-1]$ Y4 j1 e5 _6 c6 B  @# _- _4 A" o! ^
get-color0 c" L9 E8 b3 s1 t# J
  s# m% k5 `& J: B
end
& y, }' w/ U# @( m1 G) S9 p$ z7 o1 x9 f6 K0 V: b+ p' |
to-report creat-credibility
0 [# s" T% b. F' }report n-values people [0.5]
  ^- H9 Q8 D4 u2 R# J$ Vend, @- f  z, V0 s: l

$ K" u  o4 j7 f/ ~( c! Lto setup-plots
1 \. u% I2 m# ?# w) v# I7 u0 G0 S( ?$ i5 U2 w
set xmax 30

7 }6 h9 J4 b" m( C+ A/ ~
$ q4 r' C# w8 x* m. U4 eset ymax 1.0

- H0 P0 Z8 k# @$ r  ^1 N2 l! W! D! Z" G0 z7 R/ [5 Q* u
clear-all-plots
+ M/ e- l0 E) V% U2 N) l

4 B; i) y+ C  {& S  T. }2 f) }setup-plot1
7 Q/ ?5 i. ]2 M" ]  Y
2 f1 f4 [4 q, j) q6 O7 Q
setup-plot2

1 \5 I; C0 G6 `# V& Z, T5 ?
* m  f* }" W3 [+ Ssetup-plot3

+ ?- D7 t+ \, J1 G1 t& Oend
$ y" U) W$ Y2 w
2 \. e3 \9 f6 M;;run time procedures
6 \/ ?0 y: w/ _5 ?) n+ @2 ^  q$ c% ]& f4 Q0 V: G
to go
! |5 J1 W, Z- `% q/ v/ f" s# o+ T" L& y! C# x% A
ask turtles [do-business]
$ @1 d+ U* C: K0 t
end
8 e) R, q; J, w8 c! m# I1 I5 I/ @9 @! p& m1 ^' M) U
to do-business ) f7 v7 q, H- ^/ e" j
2 {4 L7 T6 a0 N/ E
. V/ b9 u1 p: H9 r9 t
rt random 360
$ k# d4 K; Y5 l
1 {' G3 y7 |* j+ |) k0 j
fd 1
5 H3 p6 W9 l0 \* T, C) Y7 t0 e
% }4 z8 J$ l* W) |) H4 |4 `  n) f/ F
ifelse(other turtles-here != nobody)[

5 S2 N' A+ |9 K8 b* m/ w2 D2 p, f; y2 i+ P  x! E% W
set customer one-of other turtles-here

/ F5 W9 {3 U7 x8 f  V7 ?( c  b
$ w# L2 L# o1 x) V;; set [customer] of customer myself
$ X2 \" z0 Z% \* L. s& `
2 [2 J9 \3 Z. q% L
set [trade-record-one] of self item (([who] of customer) - 1)( J2 U5 F/ _4 h: I4 ^
[trade-record-all]of self6 t  ?4 l" y! M
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& ?- Q( f* Q; S# [7 D6 J' O5 ^
; Y! [' n) \1 @: q' t7 ]
set [trade-record-one] of customer item (([who] of self) - 1)
$ h8 v! @0 Q& W& ^( y[trade-record-all]of customer
( j/ J* X* W6 e! r) `; Z; z

. W1 y# u$ ~8 S% d* ]; j2 Cset [trade-record-one-len] of self length [trade-record-one] of self
3 `  S7 q6 x) |  d1 ]$ v% E5 ?

% P( E. K( @/ V  V9 v; uset trade-record-current( list (timer) (random money-upper-limit))

  c9 ~2 X% h0 i1 l7 c% I8 C  z% ~5 p( l9 z" f) l
ask self [do-trust]
  o$ R5 J7 ~; `; ^- R! [;;
先求ij的信任度' g9 f" R; q, G3 i4 O
; t$ u) c9 r5 w; e( k
if ([trust-ok] of self)& _0 {. M3 p8 `5 \* Q' v$ m2 b$ x
;;
根据ij的信任度来决定是否与j进行交易[
) f7 p6 ?: T' H) P- r+ E/ ]ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 P) a# O  h/ `# u
$ S4 ]' ^4 A& p[
, D; |8 f' y/ o! R1 q) A
0 ?* K) e: s3 X! b* O1 y: Y
do-trade

7 K0 X8 x. T% G7 [- d) q1 ]# Z5 m8 y7 F. p& y
update-credibility-ijl

. t4 V; }% k$ d9 J9 v) A
$ C8 k. O* V" [; Kupdate-credibility-list
; E* ]: {1 h/ R$ F
7 g: V1 f0 i- O
& o$ ?  b3 L" M- R4 F
update-global-reputation-list
, }3 n4 [' S( Y' w
9 i7 @' O1 V8 {" |2 X- y
poll-class

: ^6 c' J' D6 j0 g8 {8 v% p% u, Y! E$ e" c% m' T2 p
get-color

5 a9 P3 g, P( x. j; F, ?1 [* O% G& Z% y
]]+ w8 p. k+ k: z+ D3 L; K9 ?" N
8 e% E& P7 a& }# d. k
;;
如果所得的信任度满足条件,则进行交易
- J; P" }. r3 s8 Z# R2 ?5 c9 A3 h2 D3 s6 N+ o2 L; |' _7 X$ i
[

+ l7 N/ q! W  z+ g6 v" {4 u; j$ Z3 l8 t- q* s( g: A. A# A
rt random 360
( c# P7 P4 r' Q# E

# z$ l6 r8 B4 vfd 1
) @3 P7 j8 V1 c& `% X; w# E: V

7 F; s" C1 r+ _+ n]

. S( m: z6 h9 Q. `4 F) n3 A$ Q. G) _& ], }) r. c
end

" l2 H) q( |# O$ D" v3 S( y% h' w2 C4 }2 m- r6 \
to do-trust % o: o5 ^- r, l7 L
set trust-ok False9 c" s: z' K" X* X& d. W, f

" O5 P9 ]: ?5 q3 N$ v9 G( _7 ~
$ F2 N5 b- M* ^4 y' r5 q" X0 V  X" r
let max-trade-times 0
& u# g4 K0 l; k. Y, kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 u9 z, g  G7 ~8 `- K; I2 H
let max-trade-money 0
  n7 q7 Z; W1 S1 G! R' w' [, j' W/ tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 L$ A; u. M4 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))& K0 W5 Q  O/ l9 o

3 x* t8 x2 n, Q& I* |7 j  N

( M1 A! s! b! `' m  xget-global-proportion8 _/ a. `) l  Y
let trust-value9 u. G, R( }/ D7 @. P& |( q; o
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)
. i) `, d- Z& X6 J* D& @* s- {
if(trust-value > trade-trust-value)
9 j4 ?& a* O8 y/ z3 z7 R' {[set trust-ok true]
$ h1 U" m9 ]/ L4 g9 y- C% rend
6 T% M; X3 D6 b
& K, D: v9 J( k$ N# t4 H: k' T( fto get-global-proportion$ A7 D% v- s& c5 B8 @) v$ L
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 ?1 c! |9 P$ j/ S[set global-proportion 0]
% C% a: T9 i- h9 j[let i 0, Z8 [- W) y( K& H
let sum-money 05 a3 c& c3 W4 b4 K
while[ i < people]
, e% n* X9 \8 G+ z+ ?. o  |) ~2 v[
7 y; l1 [7 {  iif( length (item i! |# u4 H- u" R: J- I3 p1 {
[trade-record-all] of customer) > 3 )

' I& K' W$ X  m8 V" [$ E) \- k3 Y1 A[- r$ z2 n5 h2 o6 \8 U
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ j! C/ N5 T/ e- ^8 T) n]
) J( M: P* k+ V; e& j. i8 Y0 a]
5 B* ]% u# D5 dlet j 01 e$ t" J* k0 X2 ~& p7 u
let note 0* J8 q* O( b  i
while[ j < people]" _$ c! e" h- `6 M; `9 }. H
[
1 _. F% o. j, }( s3 `' Aif( length (item i! i  S* A: b/ a1 Q, z3 D! Y3 O
[trade-record-all] of customer) > 3 )
+ H  m9 D& O6 \: `/ V
[
& b& m3 x7 Y! m' ~ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 o7 A0 R9 Z0 |- u; X
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- d7 Y4 D. z. G) M[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( C5 _+ Z3 \+ z$ ]# t
]0 l7 L+ B: j7 G& m0 j2 g- t
]5 j  P& j8 t8 n* N
set global-proportion note
2 J% b" l0 a9 _* X9 V( [* o/ k% c]4 d, W, t% G; w
end
) Y3 G) h- P" E: \4 A
7 [. d& ^; n! R: c. b0 ]( Q- dto do-trade
& _3 D0 |& c. I4 k0 K+ k;;
这个过程实际上是给双方作出评价的过程
& W% ^. C1 O9 ~" a' Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 R" f$ `: p9 ^  ^7 c! xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 J$ n4 o/ E1 k! t$ H2 `
set trade-record-current lput(timer) trade-record-current
1 K4 `* N% f( N& J/ S  k$ \;;
评价时间
, L8 ?: Z0 i, {3 Z8 {' _ask myself [
7 J3 {7 O- S6 W$ P3 {update-local-reputation& ?' H1 R# ~( G: i
set trade-record-current lput([local-reputation] of myself) trade-record-current6 D4 p/ g" B4 Q4 i( S( x9 c
]" c! s" ~) h' |1 X
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ o) R8 Y  k+ j+ u9 @$ E
;;
将此次交易的记录加入到trade-record-one( Z; _) c0 v4 D$ O$ L& {
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 `+ i6 J; O; L+ H4 R3 n! f
let note (item 2 trade-record-current )$ B& N' A* l2 P- I  _, `
set trade-record-current4 ?8 W( \( x+ o% G1 ^3 J3 D) j  V  ~
(replace-item 2 trade-record-current (item 3 trade-record-current))
6 k3 x5 g$ t! g  I' o8 D2 V
set trade-record-current1 a- T; o. h& o: t7 t3 ~
(replace-item 3 trade-record-current note)
  ]; b4 h2 ^5 x/ n2 A/ A9 c; R0 Y# n/ G0 m8 J" X  Q
- D, Z/ I# }/ n: o
ask customer [8 B. K3 H# n7 Y7 @
update-local-reputation: t* Z# [0 J. z! `6 T' Q
set trade-record-current
" N  s7 r6 n& N& b2 l6 w, S5 G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) N! I/ g% j! N: H. I. a
]/ U! G! b" ?/ k7 N6 A- M, n$ K( z

5 ^1 Z  U. F0 U: J: S2 P$ u; U* P& E

+ x9 M+ `; R% w7 T) Z9 xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ H% ]! b, l7 r( R: ]0 }
4 k6 a) Z. C- e4 h
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 z) x* [$ _+ B3 j$ L# O  ?" U;;
将此次交易的记录加入到customertrade-record-all* F6 i8 S7 e4 f8 ?' Z' a
end
2 Y& @" r) @1 _! ]
5 f; l, A3 e7 Gto update-local-reputation$ H6 b) Z5 u9 G/ Z9 n9 r
set [trade-record-one-len] of myself length [trade-record-one] of myself
- d+ k5 G) T+ ~% P. w; e* n7 S' o: j9 g# n/ [7 z
- f6 M1 W1 D1 @
;;if [trade-record-one-len] of myself > 3
7 ]5 k; A+ k3 c' [$ L, M+ H) r
update-neighbor-total
! g  \, G- ]  b$ C* m;;
更新邻居节点的数目,在此进行6 f" _& z/ N7 x- X) |4 T
let i 3  Q0 O1 p7 A  E" V
let sum-time 0& }6 ?+ K; [1 b( t' T
while[i < [trade-record-one-len] of myself]. B) e3 {" Q, d% P
[: v  d6 S2 x" s7 i! t
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* K' J3 ~: R# f5 Aset i! q0 Y- {* B5 Y" X2 f: ^
( i + 1)
9 ^7 c2 e0 _( q$ R. i) W
], B' `; ~# D" O4 E4 b9 r  m- [1 a% g
let j 31 K! Z7 b5 J% f5 g, J2 s
let sum-money 0
& D/ W( U2 _' d0 Zwhile[j < [trade-record-one-len] of myself]9 q* p  l' A$ l, A6 h- O
[
: k* V& |* [1 {% _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 \: B' \  o/ {1 H! @2 W/ C; D" u& |set j3 P  b$ ~- ?( I
( j + 1)
' _( P4 `2 R! [+ u. J5 l7 n
]
; }+ Q" ^7 t0 {/ e9 Llet k 32 z! ~  J4 ]9 e: G+ C2 T, f  [: j
let power 0
+ h: L4 C7 {! ]& b5 vlet local 0. r% f8 e. {: E! ^$ {# n3 U- J. I
while [k <[trade-record-one-len] of myself]
4 g/ Z( v# J; r% y8 g( L[+ j2 E7 F" @- J" w, x/ B
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)
! F* {4 s! R! x1 a9 i, ~set k (k + 1)
, A. q! f) j4 C- q! `/ ^+ Q]( x; E9 U& `- x, Y
set [local-reputation] of myself (local)
6 r& ]3 O" ?3 o- G% J3 {1 e* Y8 mend+ U8 D! ]3 K. c$ q4 W" h9 N, d
) }2 O9 A/ U2 A
to update-neighbor-total- \% [6 w& |0 \( r& \+ }( v
# v+ z- c  `  K$ i# z( X
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 g, W$ p3 [6 T2 Q4 W' L" E6 ~( c( V  O& Q$ j2 S! r
- @/ d. X" A! H4 m! D* G
end1 e# W, r. B& x, U1 _
! n2 O5 D) j8 H: a
to update-credibility-ijl
' h! M$ z/ ~# ~3 G" ^+ O- I4 @( c! i- I+ X, Q6 y7 I
;;
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。
* }4 g+ i' J% n* X$ flet l 0
8 j6 O9 z7 ]* h- Q# nwhile[ l < people ]
" ~. _- D2 |: h! i" \% K;;
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! I, R/ a& G/ d+ Q$ X! u  H4 G1 w
[' u# h* E- n; ^# e, {7 G5 l& Q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer). m( k1 e* H( p5 |+ Y9 y& d2 ~; Z7 X
if (trade-record-one-j-l-len > 3)
* G2 t4 k+ u3 _. x1 P[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
* w2 z  I9 C9 @0 b5 blet i 3
  ?7 B0 h( a/ h' l2 g% p3 X0 Klet sum-time 0. ?# }$ V0 o; l  H. T; U' X' s
while[i < trade-record-one-len]
5 q. o, X2 J5 W4 ][+ p. ?; R: m- c2 ]5 T% W
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& i7 l/ o! A+ U$ H" I6 @
set i
2 M3 v- G3 Z! o- V* G( i + 1)
# ?% K& C: R2 B- f' ~' Y- T" @
]
/ ^; N: z8 ~! e+ e, L2 ^+ _let credibility-i-j-l 05 Y: J3 r* ?; z8 R5 W
;;i
评价(jjl的评价)$ G. U2 x( b" F' R
let j 3
9 n; m5 O9 M4 |; g5 h$ k: olet k 4  c+ A3 V% F- f& u% f$ f* M
while[j < trade-record-one-len]& `# p1 F3 F2 r( H
[
& t, c* q, r/ p8 h: gwhile [((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
. W0 V% j$ r) n- h( Q) Vset 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)
. T) ^8 v+ ~3 q. i+ _7 `set j
# Q6 `1 x  v+ @% m+ n( j + 1)
/ H! m5 p( u: L3 g1 _  k& T
]% N" K6 o0 ?! ~3 `: i+ 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 ))9 I3 }9 N3 P' C- P6 x" a* R

, D# m* v$ i+ \! N4 P1 d
3 a$ \3 d! B+ q2 a
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 i5 x+ s% y6 I;;
及时更新il的评价质量的评价
1 T0 `' `6 C% y6 e! ]/ J; _set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 M$ @: N+ Y+ c7 i. L, ^2 h
set l (l + 1)
5 |/ o5 K9 Y* c5 d; t; w1 X9 a]
' ]% z6 }) x# s0 _8 L+ P! J9 }end
* a( g$ d9 ~5 k$ N' T
$ d9 d) m% w9 ?; w( `: n5 Fto update-credibility-list
" n- Z. C0 |$ }, X$ Slet i 0
3 i) y- R! H) ]2 x; m; y  i2 _while[i < people]
6 o9 x/ J, A8 N3 P- ?, m[
. C4 v% e1 q) T! n7 n2 W2 {let j 0
# t' }+ U+ I' g' y( Y. u9 ?5 xlet note 0
! g" a, S* J- G1 N9 {let k 0
: ]2 u9 m0 L* F;;
计作出过评价的邻居节点的数目
  B4 C, t5 z) }* Wwhile[j < people]4 N2 |  r% O& h& S9 p6 o* T8 @
[: [( `4 U6 {" h+ k" |' A
if (item j( [credibility] of turtle (i + 1)) != -1)
, t' z5 W* i4 r( [( }- o! N;;
判断是否给本turtle的评价质量做出过评价的节点
/ z5 n7 B+ T& w. r2 s[set note (note + item j ([credibility]of turtle (i + 1)))
) H0 h1 R  H7 Z$ R7 u# J) l0 b;;*(exp (-(people - 2)))/(people - 2))]
' r9 t' x5 d: ^% A+ ]
set k (k + 1)9 ?/ r  p) K2 O, G  w
]
& b/ Q# @: C! q. e- e* Yset j (j + 1)' `- _8 N) ~' _% F. ]# @
]( {. t5 Y5 p' G: U2 g
set note (note *(exp (- (1 / k)))/ k)* n: s7 D0 q$ _$ Z' q
set credibility-list (replace-item i credibility-list note)' D; h4 I, x. i- i
set i (i + 1)
) j$ a' }3 W" q# |) G]
* D/ L- Z3 U3 T2 Z3 I. `end
; `5 u) O9 c% _2 j5 b6 i  n: G$ ^! ^3 O
to update-global-reputation-list- m8 i% o* u+ Z5 G
let j 08 A& C& ?) V: g" C
while[j < people]# F/ h& c1 [. H! u/ ]
[% t( `, G- Q: x# q1 V
let new 0$ E4 v" m0 @  U: W
;;
暂存新的一个全局声誉6 H* `+ m5 ]/ K5 n' }5 @
let i 0
! Y$ `/ F. I+ g6 x  ]# Wlet sum-money 0, b/ F8 p7 `6 t, r8 @# `* @& [
let credibility-money 0
1 T7 N# Z9 g" T. W1 J* jwhile [i < people]+ N( v. k  m( M3 X8 _- V
[
- _# ~  i- l9 T" h* i) w' e, @; T5 lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' P' b3 c7 P6 `/ L$ m8 c* i4 }- [set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 u9 V: Q$ O- S0 j: m% \/ R
set i (i + 1)
' P* ^! r& `2 v' R]' _* x: d5 M6 t* ~# D8 A/ ~
let k 0+ b' x  C. n6 n  W6 ]' t( ^: f5 Q
let new1 0
6 b! A/ N0 O9 S4 dwhile [k < people]
0 E2 M9 X1 x" ~[; p+ ^# N- e$ x0 F( x
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)
6 E' @7 s1 u1 L9 z5 B. Dset k (k + 1)
1 n0 }  E/ z: _! z]
5 c% P! c( J9 b! Oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & u  _. J' j4 t7 X" y6 |
set global-reputation-list (replace-item j global-reputation-list new)4 f' n/ w, ]5 V
set j (j + 1)6 S) B. v( R( R  }$ s/ d6 T: z0 _5 z
]+ v+ D+ O8 X% v, I( A0 E: v) K
end' W3 A3 M! y* k6 j& z

/ O& o6 K! K+ ?$ H, Y& z* \- }7 K2 ?2 u
* N4 \* b' _$ _. F$ S" S8 B
to get-color
; E" q' u/ N  E
3 [8 w' N9 B) e( }set color blue

+ Q' F: S( p, Yend
9 H1 ]: w8 A3 `1 @& \+ k& N! b; K8 c8 H, [* D# w
to poll-class/ q' |* o& F( E) N% N& D: ~
end# M; L! n# S6 c2 S1 R% K' @0 Z* p
8 l/ [+ m& @* |  ]/ X
to setup-plot1
3 b) q( N8 a5 m0 y( J6 c/ W5 r! N: R3 Q, A6 A5 S
set-current-plot "Trends-of-Local-reputation"

2 r- N1 @8 q( ^8 t, H6 i) d' D3 \
set-plot-x-range 0 xmax
1 x9 y7 T& U6 R$ [* C# G6 O

# g  C6 I1 M* K7 Z2 Q6 [; Xset-plot-y-range 0.0 ymax
0 f% F8 y1 D* U  a. R
end& I% H4 O- r  }: S" t- t
4 i9 J  z' Z; _
to setup-plot2
4 c% y+ M& T' w% J0 P
8 Y! \5 d; o7 D3 C* ?set-current-plot "Trends-of-global-reputation"

! ]# L$ [* }& R
) b0 L# l3 g: l& H& _, |1 eset-plot-x-range 0 xmax
# |3 @/ v, E# o, j! ~) M
; o0 G- s0 B# H, N0 J: H" b7 `- e$ B
set-plot-y-range 0.0 ymax
3 ]" A3 l2 A( a; O1 {
end
  n% i4 d5 P0 g" r- K
3 Q0 t' t: v% `; V0 h, zto setup-plot3
3 i1 C  H* ^: v% i- X& o( Y7 j; ~. W; t6 `( P4 M) G
set-current-plot "Trends-of-credibility"
! X. `  T. q  f

& Y: I; \9 p& i. `$ wset-plot-x-range 0 xmax

4 E5 p, f1 s0 O" @# N) e( {: n+ v$ |$ a- s% b4 F" y! b2 `
set-plot-y-range 0.0 ymax

1 ?1 l8 f3 V& M' `6 [. _end8 N9 r; M) p6 X6 @& Z# f9 c

6 a) b* B5 m- W, @# lto do-plots
! X+ \, ~# V7 c, E, Hset-current-plot "Trends-of-Local-reputation"' u) F- `/ q5 q9 m) Y5 \, f
set-current-plot-pen "Honest service"
* ~/ y) K2 G8 ~5 r, O5 l- Kend
; C6 J0 r4 [* _# d/ t
* m% p* K; j; i. y. T" `[ 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.. G: ]2 e0 f7 \$ F8 w/ B
, M, t+ i+ \8 b; b
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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