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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:; v, D6 `6 ^3 s  ]% `  [- [7 L
to do-business # `9 B! {8 U" x4 a4 J
rt random 360  [7 y7 M: x* u
fd 1
/ c+ W9 T% o! ^. L6 {. F' t% {0 I ifelse(other turtles-here != nobody)[8 Q% m" G* x# l, J
   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 j) f& D" ^% g2 v9 D7 ~   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! I) G) L1 k( Q6 w) t- ?   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& Z% A/ P6 z9 z' ?
   set [trade-record-one-len] of self length [trade-record-one] of self, K# W- E7 k+ P8 Z4 \. z. m
   set trade-record-current( list (timer) (random money-upper-limit))
. l3 S: O, D# Z. y/ r$ H% W8 z' O
9 g" q$ g2 ?+ k8 O1 X: l问题的提示如下:  u: F( |8 a3 \' d  j
2 B3 c6 r4 i' |9 _
error while turtle 50 running OF in procedure DO-BUSINESS
$ m% g: U+ `% O$ G& A1 @) t- @  called by procedure GO
2 d( j: Y2 z' {OF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 N4 \& g0 b" @% }2 [4 {
(halted running of go)% k' u7 l( C3 t9 _
- P  |4 Z# U3 i, v
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~~
* u* x: D; E  F4 l. y) H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: E" B0 {' \' C' A) ~- e( @
globals[
5 a" q) ?# E2 S1 q. ?) X6 q& mxmax; R7 t: A" P, ~8 R
ymax
  V' G. B/ x3 Zglobal-reputation-list
. h& }- i7 ]8 b8 M: x9 Y9 ~3 `7 i$ E; E% ^7 Q4 m
;;
每一个turtle的全局声誉都存在此LIST
3 G9 k* z- e$ O! C/ N, Mcredibility-list
8 M1 I: f5 D  H5 ^;;
每一个turtle的评价可信度" T* G  k: k/ d; v: n) E' N. g* A# a
honest-service
: [/ [# Y* m3 _0 q. w1 D7 ], S0 Ounhonest-service
5 V. d3 x$ O' ?# _' Qoscillation% k" G7 ^& U6 @) M+ x$ g3 R" w( N
rand-dynamic
# @3 j+ u# O2 Q]
* G. I2 c- k. S* c( y/ m$ K+ l# x- D) R
turtles-own[
- s  [9 Y# q9 \' O' d9 T! otrade-record-all
0 Y. Y7 K) o4 r;;a list of lists,
trade-record-one组成- L2 y$ {  N3 @! T+ C, I
trade-record-one
. P0 Y; N! ^' M" [+ a;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, R2 G0 K4 H1 u( M# q7 Z- F# Z1 D' w& A1 B* n7 F$ ?
;;[
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]]
( D' K2 Y! U( U5 u" P5 x; F$ ]8 Rtrade-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]
$ @% A+ d6 r7 u: W8 xcredibility-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
6 h, P8 {6 F& @5 q8 K5 vneighbor-total
6 W/ Q6 I8 i8 n;;
记录该turtle的邻居节点的数目1 v! a2 `% m) d! g' v# k* B
trade-time
& l; H3 l6 D0 P# s;;
当前发生交易的turtle的交易时间/ h! ]. R% F; I/ ]; E  G( A
appraise-give
2 x  I6 C( x0 o* N4 R;;
当前发生交易时给出的评价8 W: Z' c4 K3 [2 `3 q
appraise-receive8 y* I5 a/ x. A: n
;;
当前发生交易时收到的评价4 R4 ], i  Q1 x. `- ^5 t" [
appraise-time. `; D" T$ R2 ^/ P6 q% m
;;
当前发生交易时的评价时间- L. l/ U, t) M/ _7 S1 L/ x
local-reputation-now;;此次交易后相对于对方turtle的局部声誉+ z2 t: z% Y2 w3 L$ p) ]8 u) o
trade-times-total" M3 V; c4 p  ^: z$ |0 W- ^6 P8 z+ A$ y
;;
与当前turtle的交易总次数
5 e8 e3 J: }& A3 J; p, b$ [( ltrade-money-total* p7 J% C& x! t' [1 F
;;
与当前turtle的交易总金额
2 K0 G; C- n) h% u! a2 j. ilocal-reputation
- M7 ?' Y4 T4 t& oglobal-reputation* a8 R) D" _. X' Q8 L
credibility
! A* v3 s( [1 W0 c0 S1 ^& ]4 k# F;;
评价可信度,每次交易后都需要更新7 k6 C5 E9 t* v1 z
credibility-all
# A$ D& e  a$ a! H1 v4 J: u;;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5 h; S9 l2 G/ g/ K. a) Z' Y

) C; V- z; w" Y; }% b  R* ~;;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
4 e" x! z7 {! t  }credibility-one
; S7 N% h/ Q  E, ?! c;;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
  d8 `( R8 P( Q: y2 z8 Jglobal-proportion0 q! m. T! ?/ P- b3 L
customer
8 C' M( o( ]; s5 j6 F9 _1 l& Xcustomer-no. T, V7 B; Q0 S( T4 R3 A' j; j
trust-ok; |) @- B0 u6 i1 L* V( L
trade-record-one-len;;trade-record-one的长度
% a4 i+ i/ O: p5 S]/ `7 M9 x( j2 a2 ]/ W7 a8 G

  i: u- s3 ^. K* H+ Z;;setup procedure
" e: n+ j9 ]* ]; E5 }; d5 D; j+ Q3 _7 m% C8 Q: x
to setup
6 L; U! [2 n: T9 c4 t" }+ Z0 U
4 c4 X" U& \5 q' `ca
, u& h7 L, I" u* K* B+ E
1 W" m# n5 s( K; L! ~, q2 Y4 ?/ L
initialize-settings

) c# F" `8 m6 I6 M- d" q/ O! H/ e, _( y$ d. L! I( d
crt people [setup-turtles]

. `' ~8 f, B( L) ~7 [: X, _' Y* S! W! s
reset-timer
( [5 F# A0 s8 V# L9 v) f& i$ B. d
( I* @7 l8 I  G( i( i% i
poll-class

- |4 c8 q) D0 Y7 C/ I4 Z5 I; l" ?5 F/ o9 w9 E
setup-plots

7 P4 `4 C. D- V' Z6 l& P7 t% x  [, o/ C: I4 E. C# R1 `+ J
do-plots

/ z: z" H" s! iend0 B) U8 l) \3 r, D: F" C0 p" A

" T1 x! n5 e+ B/ M% Y1 kto initialize-settings
; _2 g3 `  R) E
9 R$ H2 C0 U: O: x2 D! x/ S! Aset global-reputation-list []

- Q# y, p- \. J7 |* L# f. {* t) R3 d, v1 X
set credibility-list n-values people [0.5]

2 k: m8 Z* U1 `2 ?/ E
: z) F. h! h7 S# g* x( q# aset honest-service 0
. t. _5 L9 `$ g

  u( a3 @0 G9 _  d3 P) z2 oset unhonest-service 0

0 `. O$ q& D$ L0 X9 V9 d0 L& ~* t2 E6 @) z$ F$ H
set oscillation 0

; j3 J, X: J% A5 v: P# I6 h" v4 {
9 K$ r3 Y6 u5 d( zset rand-dynamic 0
: @2 _5 [2 u% d
end* E8 k6 R! I7 T$ n  `! r( W
, q: p- o3 F5 h; A0 V9 k9 g' j
to setup-turtles
8 @; ^! t3 F/ }, m: d+ R# Q( hset shape "person"
3 x! R* Q  n7 H) R8 Y# D5 Asetxy random-xcor random-ycor
7 q' R7 P5 E) X% tset trade-record-one []
3 K! `7 c$ X" u/ y+ }8 e

+ j+ [* |6 b% N) Wset trade-record-all n-values people [(list (? + 1) 0 0)] 5 `0 D# U, [5 x/ U
' O5 a0 `7 s- ^8 K) G  f
set trade-record-current []
+ Z8 c  Y  j( {0 a  uset credibility-receive []3 M* @2 s! w* ]& S6 w" e5 E$ M1 |: C
set local-reputation 0.5' E/ Q- [" V, T; d
set neighbor-total 06 L7 v9 V- h7 {& n% J
set trade-times-total 0
, j! n1 f  n* ~: l# kset trade-money-total 0; S0 p$ |; \7 H2 F! N" s
set customer nobody
3 [6 A. @! E, Y4 G' I/ e( n- cset credibility-all n-values people [creat-credibility]* v# W1 n) q0 O; R2 H: w& \2 ~. I
set credibility n-values people [-1]
8 y0 P3 A. `% V9 L5 bget-color0 B2 w7 b/ R/ X: h1 C8 Z

& \" c4 W, H; E. @9 Eend
: I; I4 s: Z% g3 U# h  F& Q) s: I  L! J1 b: [) A
to-report creat-credibility
9 U+ B: ^3 R0 yreport n-values people [0.5]  S" Z9 I2 ]( v
end; H& g7 P& B; B/ U

% y& ~# e0 D) ~' Q1 ~0 r6 Uto setup-plots
9 W* z; B! _$ _. i9 `6 F3 c
( T5 ?! l3 Q3 }) I6 R6 g( Mset xmax 30
$ _2 y* c  m. K* o  \

, w2 F" X7 T6 ~  H4 o5 j3 s- S1 uset ymax 1.0

1 M, u" Y( v2 {3 W+ `1 q+ ~% `4 [# x
clear-all-plots
; K0 |. p! E  K( `' [

3 W6 g" l2 @7 `- ], o! Ksetup-plot1
' h4 z  q( ]6 f4 V* C) N

, D7 ]- [0 Z) }9 ^: F9 esetup-plot2
# J+ S, X  ~4 `  `% d

& l9 A6 l4 T) xsetup-plot3
4 G& Z+ ?$ w2 w" }, u# J
end
# T0 S% B3 U1 ^/ m" ~
' [* N: u1 u6 h7 Z" J4 f4 a' U;;run time procedures/ L& ]% E0 ^4 G

; e! f# P. C! _9 t- ~" gto go" t3 a5 i; L( u3 Z0 X8 r
% s" Q9 I2 A$ ]9 J6 T6 ~1 i# A
ask turtles [do-business]
" l+ a; Z9 V4 @2 K: T
end9 [' Q6 {, c* u
2 G/ }0 U1 Q9 l; J, y( E$ l
to do-business
1 |7 i' O9 B( ]  Q" z
$ u9 e8 y* y+ v% H; M8 u) x
" X) `* n4 S. V3 G/ I; N9 l
rt random 360
( w7 c: B+ A3 q6 d

& p; u$ Z) l2 c; P7 q6 {fd 1
& O) C$ B+ K( Z4 n6 u2 U+ s. l% q
& i" n: Y& N$ Y1 e
ifelse(other turtles-here != nobody)[

& q: A$ K7 ~& x3 K; t+ C
( @( i6 Z: C$ b5 Q. i; U3 {5 M6 iset customer one-of other turtles-here
% w. z( F# A% E+ l( I

1 Q- w; b  f  _;; set [customer] of customer myself

& q* U/ v7 z) e3 J1 z
4 e! N$ V$ C) R5 G6 B0 lset [trade-record-one] of self item (([who] of customer) - 1)
$ e) T9 V* I( E5 A* [[trade-record-all]of self
" g5 A! y% @  s- N8 I;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. {/ S# C. D# X! e1 Q
6 `* Y* ]9 k2 B
set [trade-record-one] of customer item (([who] of self) - 1)
' w. `& D5 o2 z  Z' ]7 d[trade-record-all]of customer
7 L5 V( h! |1 R& [' Z. y
4 f4 R2 Y% x; N0 L
set [trade-record-one-len] of self length [trade-record-one] of self

& r) I( v1 E( N$ e0 W4 }5 H9 y, P) c! D: Y8 f
set trade-record-current( list (timer) (random money-upper-limit))

1 N2 ~# ]# k1 c9 I) |* t
% ?6 i3 Q% h/ s' i  \ask self [do-trust]5 l4 s* ]- q, Y! v: Y- ], A
;;
先求ij的信任度( ]* E3 E2 Y# @2 x! E

- U% u& f- q0 [- D* D. n6 Jif ([trust-ok] of self)5 R% U( N$ Q5 b: M0 v0 G% l
;;
根据ij的信任度来决定是否与j进行交易[2 p! s0 o  t8 M5 M
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 i3 U# [) k$ U- l2 D

( F5 ]% G: K5 m5 |8 x$ J[

; ^2 B1 O! x  I0 J
  P& f; Z- L4 d5 y' kdo-trade

8 h. P$ v# q- V$ M6 Z3 i- U6 x: i
$ ^% X1 k) k# ~' s# R& yupdate-credibility-ijl

: r: x: j* }/ g
# ?% r  V# P1 aupdate-credibility-list7 d3 G( i$ D. Q+ Z* S) ~/ h# s

( G* j; C) ]3 c1 \0 S1 X+ d8 w2 I) K; t" m3 E
update-global-reputation-list

- m% V5 e. |8 _" Z9 P& c' C8 Z4 x: k- M, r+ c0 Z! w
poll-class

4 c3 I4 |' v, ~# S/ F3 b7 H
( ]' {) \  s" l* ]9 t; mget-color
, Z4 x( j3 @! b: d4 s0 w7 [7 i
2 y3 ]) u2 `- E% j  P# i( [
]]  p3 f4 A8 l8 v% B5 T( c& a) w
* `: S! G2 X- \9 Y) _
;;
如果所得的信任度满足条件,则进行交易' X# t" `% j3 O' R) _8 V' C
4 F0 U& @, i. x7 Z2 G
[
- i! d: V0 r) z  N, t

. x# Q' Y* t: h! X2 i+ W% srt random 360
7 t: n& d7 `" O3 o" y. ~2 P
  Q9 c8 ]3 }9 b/ d
fd 1

) F; U  q# y! D" t5 Y5 t9 T5 i. x. ]) F! L" w# C+ M
]
. G$ P* Y: s' p. k7 A
* d% n6 X9 g; b& w% j
end

2 P7 |. `  [7 [" O( g: s$ ~
, s% V) N$ K3 O8 wto do-trust * f: \( @! z% |, Z1 q$ ]
set trust-ok False
: D& {" A0 I9 u4 a( G1 N0 q! h8 Z7 Y0 ~+ q) Z8 d" d) q3 {
2 v5 o, @. t- @+ x* p  e( O, U
let max-trade-times 0- H  H/ _8 R( ~. T
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( |- ^& h& |1 D5 ^- C6 Q, s7 A
let max-trade-money 0
$ Z) X* b3 U; Z7 U" V; U- b; cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% i& p# c& @  b3 G  \$ `
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! T2 _4 y, r' z. I! V

4 u6 \1 d5 f+ _( t  a' L

, G7 S6 v1 a7 T) t1 x7 r! ]; wget-global-proportion: d# i% C( r" o: p. N' y9 x- S$ U
let trust-value
4 g: m" A( r$ x% slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
- g6 g3 u4 m; f' B' Z5 q
if(trust-value > trade-trust-value)
; \8 F! y2 B. W& P% \[set trust-ok true]
3 j/ l1 _/ m* p4 ]end
" b: |3 T) I9 m$ Z/ E* z) R$ _( D: R" g. k1 y+ m$ \
to get-global-proportion
/ [( d5 F5 N" U5 w- y/ l) Sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. B1 O$ S3 e; Y# {. r[set global-proportion 0]3 [+ Q& p3 Y$ O/ [1 }# M) N
[let i 0" Z  x1 Q& m5 K
let sum-money 0
! `$ v1 X& M6 A) Mwhile[ i < people]8 B! w* {4 \2 q# j, T
[/ y$ g' I, Z% p& r/ s9 j
if( length (item i
4 q2 ^! t5 {6 R1 b" n, T: q[trade-record-all] of customer) > 3 )

& s, n6 h: e# J5 w" \. ]6 h5 F[
0 N, k$ r3 b- `6 x" D( W. E' lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' [7 T  E9 D# }# P]
: L: E; [; t: P]
0 y1 Y3 B: m$ c2 j" @/ u* Mlet j 0
% K6 ?9 S" V2 _let note 0
) c) c8 }" Y$ U1 w5 Vwhile[ j < people]5 q' h9 k' w+ X5 F
[) j7 _" I- D! X% F# ?1 x
if( length (item i
8 i3 z0 I+ q  J( b3 ?[trade-record-all] of customer) > 3 )
1 t: t9 i: f/ M( T
[
* F5 ?8 ?+ N# V3 Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% ]' [+ o, G. Q. M7 d9 _: l* V) W+ _
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 P/ Z, y; J7 L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: X% J2 w$ Y, y& B]/ v/ R6 W2 l2 k: \: [
]
+ \: w' v& i; a3 fset global-proportion note5 ^& a- u" ]- c# s3 x$ a8 D
]& B4 B5 J' Y; o; C& o1 H
end
) D  h; d+ O4 f0 s! q& N) J  N$ \$ M! T7 Y) X5 S
to do-trade
+ b; a1 u+ c2 s# P. q/ P, k2 _9 @' i, d;;
这个过程实际上是给双方作出评价的过程' D8 U& ?/ [6 l- o  ~" X4 M5 J4 h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& Q7 T3 [5 R  p6 w1 I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 E" E5 [9 x' p7 V+ I$ z/ Xset trade-record-current lput(timer) trade-record-current' }/ U& |, k5 B2 \% E
;;
评价时间
( C# }2 ~# e8 C* A5 o4 v! d. Fask myself [' \# @( _. Q: s- V# \' f+ O' ^
update-local-reputation
1 A4 o0 h: u5 e& a7 v7 cset trade-record-current lput([local-reputation] of myself) trade-record-current9 m8 `6 N: v/ T6 i2 ]
]4 v) {: T  H, p7 M" i2 f. M
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; F* S* t( Q3 r
;;
将此次交易的记录加入到trade-record-one% @) d% d6 U! R9 K$ t
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 K! p, ?& V$ a9 }8 o& W$ Flet note (item 2 trade-record-current )
; G8 \! `$ t$ V; c  [, m0 Xset trade-record-current+ Y2 x* @% C6 d, K
(replace-item 2 trade-record-current (item 3 trade-record-current))
) p0 t9 }8 O8 \  q3 j. c1 q
set trade-record-current' d- @+ Q" t7 d! }8 Q
(replace-item 3 trade-record-current note)2 A  j; J; i6 ^) _) \! o# p8 H

! M& s8 ]/ O) Q  Q  {% E" `1 k+ U7 j
( j* d0 b" H+ F: g. {
ask customer [5 O- S. a; {! l5 A
update-local-reputation' O3 b. j) @% {7 J( V
set trade-record-current( Y* `9 t2 q" C7 f# s/ \; b
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 |8 Y; o# P& T) W; X) w0 S
]/ F4 @' ]! ]6 k& u% ]+ O4 }
7 |- F4 O. F6 k- [1 Z
+ i: ]: ]$ Q% e
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, Q8 E+ H; ]; p$ f# ]6 @* k8 a, t

: x2 g3 ]: O' ^3 b* E/ I. Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% p( X$ `* C# m8 [: w;;
将此次交易的记录加入到customertrade-record-all
2 E' ]0 J% ]: N6 pend5 P6 W( H& |1 K& z& Z1 V

/ ?) \+ ]. n/ sto update-local-reputation, H& ^; b7 M. k( t7 q) f2 k
set [trade-record-one-len] of myself length [trade-record-one] of myself+ }: ^0 [7 P9 x# e4 `
3 v% f7 s) [+ h1 c1 E, Q
0 h0 c1 L) W0 v% v7 Z0 }
;;if [trade-record-one-len] of myself > 3

: e  c" R& h, l. y' Y7 u+ F# |6 V; Zupdate-neighbor-total
' R8 R; h2 c5 N; f- Z' X  S;;
更新邻居节点的数目,在此进行% I8 G" g; Y9 J1 r4 J% E6 i
let i 33 Z' I2 p# B; l
let sum-time 04 F2 }2 U' g  Y6 ^+ h6 ~
while[i < [trade-record-one-len] of myself]: @) v! }: l3 ~- I; u; [
[
; @0 d; @2 t+ @/ `, Rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), C1 B1 n5 H5 c' s8 k' E
set i/ V3 S3 s# [5 f& O0 Y, F
( i + 1)
. S" y$ |. M+ U: I4 V
]
5 h' }9 Z3 ?) Q0 K& D9 G  `let j 3# |& `. k& C0 l, D9 C7 P
let sum-money 0
$ t# A9 `/ y: _1 w7 q: a- Iwhile[j < [trade-record-one-len] of myself]( B  g" {* g3 j7 N6 E, Q
[8 }' [+ g7 e/ |' ?2 l4 C$ E
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)6 n; |( N( I' p: S7 J
set j3 z2 ^% M" ^/ i/ ~
( j + 1)

# P4 R' l- B# v]6 v% v. s! X6 j( s
let k 3
+ ~  V. c$ i' A' rlet power 0
( j- h; t# f, l1 W; Hlet local 0
, V9 [: M- z: G' Y$ Qwhile [k <[trade-record-one-len] of myself]
8 |6 J, A" D& I, z[. F& Y$ w" e  y! x% T; s
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)
) {5 S6 R5 L) O1 V$ k; Y6 Eset k (k + 1)
% m3 o( Z( @6 ^]; j* r' a+ T! [$ h
set [local-reputation] of myself (local)8 F6 b  l! A: i6 K
end
! k" \4 ]' [6 p( {) J, i7 g4 Q- [( \/ f8 U& {1 g
to update-neighbor-total( x( M9 p; u/ S$ i
7 N" Z% [% {% E6 C/ d1 G
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* [# |8 Q8 O9 e" v8 j1 P
3 ?3 k4 R. R+ _' ^) b" x9 h
$ s0 H& z4 d( W% ]6 y
end2 v4 P% `( Q* W

& X1 w/ O5 y; [- z; o' c1 mto update-credibility-ijl 1 I* E5 w! N( @' `% k7 ~

$ w& `* \% H7 l& H+ W+ \;;
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。+ t# g' U4 {  N$ F
let l 0
: |( u& g+ B6 C& twhile[ l < people ]
7 s! g8 G1 }7 X) D& L' p;;
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; J4 }! C5 w! _8 q
[
& u! l/ V! ~% Z1 J$ ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 `3 P: L. M3 G  k9 T9 X( [
if (trade-record-one-j-l-len > 3)
3 n/ m6 A$ v. X[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-one8 D! Y0 \- W+ j( Y$ ^; M! t3 n
let i 3
& ^1 g9 S3 \5 z2 C9 z0 }let sum-time 06 w& Q3 J, b  c2 J4 d" ~
while[i < trade-record-one-len]- v$ _5 a3 ?9 c0 \$ t+ a3 a6 E
[$ w. J3 ^3 A( M; P! V$ R
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 U8 }# R+ Q" o. L$ T) x) Z( h
set i
4 M$ g& r7 `2 B2 _7 ?9 n" d( i + 1)
) w( ~( O( W1 ]8 `
]8 n1 T/ U/ i0 v; y5 q
let credibility-i-j-l 0
. h8 V- _$ u3 w9 S$ o' B) m" _;;i
评价(jjl的评价)
# l$ @5 M" _1 C" x- i! g8 zlet j 35 O9 i& g2 D* b4 @! `/ L5 ]5 c
let k 4
& n% S8 ~, _% I0 b' m0 Nwhile[j < trade-record-one-len]* K) o: c* E0 M" B  z! V
[+ S. z/ j. \. u; E' X1 P- v0 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
( [3 G  @& I7 nset 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 n1 R/ d% T1 @# rset j/ }) q6 B; ]& {& m
( j + 1)

! t4 ]2 i! K1 v* S]
+ r% w3 T& U' ?& \1 @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 ))& ]8 R( U+ ~1 l' L5 ~
- p8 s3 q4 y) B% h0 V4 }  ~

" s! C2 I' r0 ^+ w% z4 F: i" C/ ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 H) `$ {$ W3 `5 X5 O% x# n( ?;;
及时更新il的评价质量的评价0 W; a- }7 l! Z9 S
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# z+ z  F+ h! `$ d1 Q' Q. C0 O9 C: |
set l (l + 1)
; o6 e0 k' s, O& S2 t' @; r]7 w6 E6 B1 R# e5 ]+ m5 O8 I
end+ B7 o. t9 j3 v- Y7 g, X9 r: c6 c

& w! w0 ~, \" B) k: u* a$ _9 Nto update-credibility-list
4 M( w. u2 S  ylet i 0
8 |4 Z. |/ f1 r! G* }2 Rwhile[i < people]
+ ]" u6 A, q4 j, B3 d  k[
, @8 d: _! h  H# [# flet j 03 D3 O2 W; q* R; r- S
let note 0
/ c3 c6 y4 z' @5 J* [9 R8 Blet k 0
  g0 Y/ s5 t: e' f; p1 v" E4 @;;
计作出过评价的邻居节点的数目
, y) E6 t: V  T7 e- n/ r' hwhile[j < people]
: K$ o  ]* g1 w. D: }% [  C7 \% e[
& N! ^$ G% M9 J" e: H% I7 Mif (item j( [credibility] of turtle (i + 1)) != -1)
, D  [! P' r. w# j5 ~7 U0 U! y;;
判断是否给本turtle的评价质量做出过评价的节点
0 x$ d* {0 |2 L[set note (note + item j ([credibility]of turtle (i + 1)))
0 k. u5 R9 f! d% s; o# c2 z;;*(exp (-(people - 2)))/(people - 2))]

  W( Y, G7 e9 _set k (k + 1)
. F- ^3 _" ?/ `0 E9 y$ [' X]( G/ s( q0 m) o) g! e! B
set j (j + 1)
6 o8 r# ^/ |1 q! }. `7 ^4 ~]& |  @' C- M) t2 K- w) r) S# L  n' S4 y
set note (note *(exp (- (1 / k)))/ k)
1 A0 \9 y, a7 Z( A1 \set credibility-list (replace-item i credibility-list note)
5 l6 t8 H9 v3 ~* Qset i (i + 1)4 M4 V8 C1 `- [* w6 A
]( s* `3 c9 D& J1 X3 `7 n
end7 k' Q/ j8 w- p9 {8 f, i6 `& t  A
% d# V8 `7 e' c- j9 F
to update-global-reputation-list
8 T3 ?9 e( ?6 |2 _( u0 b, B# ]4 `let j 0
" c$ |- L1 f5 u. t$ J9 Q8 W% iwhile[j < people]
) Y6 D! _3 \8 c. H; n$ J[" G  m9 R4 D% V
let new 0
# e' _" X, b; w! @* F;;
暂存新的一个全局声誉
) b$ ~7 a) _. t7 Vlet i 0- T- A) H" J9 i, b9 M
let sum-money 0( Z" C, c) B6 r) K0 C8 \
let credibility-money 0/ v' L' q! b- N4 m( f& _9 r
while [i < people]
6 H1 J% T+ [4 h% L" w[
- h, w/ g& [# e3 `( D! S$ {set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# n5 l+ k+ B; p% m& g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 v! `- _7 `- U, Oset i (i + 1)
# o" P% C7 X: w]' d& c2 h% }: ]3 O4 g
let k 0
" }  t3 p7 z& y- Glet new1 0
7 [0 l6 g0 T( u9 n7 |while [k < people]( I) A. P0 D- Z. U$ `2 R7 \
[
7 f, P& u/ f7 a) tset 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)
( r' A5 z4 F0 r6 e( q# I. Nset k (k + 1)
% i& g" |" x1 p% L]
7 S2 M2 a- }/ Z* d; n3 Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 P1 S& I3 R; m
set global-reputation-list (replace-item j global-reputation-list new)+ l4 U- T! K8 j7 O5 j, _
set j (j + 1)8 ~- A" [/ A4 i! s0 L
]. `! o5 l: I$ l/ a/ @% W- g
end
2 C# ]6 Q7 n0 m0 W
! O6 ~+ o/ k, _) Y- }! M- g: _* B% Z2 E0 f

& a( R8 Q! n5 s7 x" Sto get-color: a& J6 E3 D4 Q7 {5 s7 d/ O9 L
! a+ @6 h+ K3 Q$ i7 D
set color blue

" Y; s. Y; M; J6 fend3 D9 s: w" b, i& o9 n' C
; l" ^& }' {/ k/ l2 s  R/ G
to poll-class
  v8 |5 a$ L( f' S! }end
' h& v* _! I2 J% B+ L, `% ^
$ Q2 M" Y4 e/ @7 Y9 s, Hto setup-plot1
7 Q$ e9 n. ~8 ?' F7 r8 S$ ~/ U
/ N! y1 T5 h7 B! e) k" e* F/ |7 y; \: o3 lset-current-plot "Trends-of-Local-reputation"

1 i: \1 u1 D  u0 T' A1 M! O6 }
set-plot-x-range 0 xmax
% ~7 r  I2 a8 t% B$ w* y

6 [) g3 h; F. kset-plot-y-range 0.0 ymax

  w) R% v8 M; P/ _: Y$ @. xend
/ P% V. F+ `* h4 ]1 E
' _' h1 Z! B4 `& ~to setup-plot2
! K' p* K. v3 x
* [  U6 L# W! \2 v+ \set-current-plot "Trends-of-global-reputation"

0 K' s: e: F4 m: U
; h" d% W9 v0 ]" M/ V( C& [set-plot-x-range 0 xmax

* k, U7 j( S3 \5 Z
  R, T6 k8 u8 jset-plot-y-range 0.0 ymax

: R1 S2 W( t. s, _- Oend
2 q& S; q5 k3 Q- e" M$ X" o# z) \
to setup-plot3
: Z9 v; t/ T9 f0 W9 S% _4 C5 w+ d; ^
5 O/ `4 `) Q& p7 Bset-current-plot "Trends-of-credibility"

4 D+ k! T$ Y3 }" y% X1 P5 G2 h3 f4 s: v
set-plot-x-range 0 xmax

6 [1 E; K$ w- Z6 W& p8 {) C9 p  l' w: Y$ j6 Y1 c- T
set-plot-y-range 0.0 ymax
& b  o3 I' {$ v; O5 I
end
* ~! y3 o% n& g: a& O. R" |
  `2 r9 I5 F9 ~$ l5 Yto do-plots! ]; D% q+ P! ]% \2 V# s3 b
set-current-plot "Trends-of-Local-reputation"
  [: t  b$ M8 }, h% U0 l7 G7 }$ c1 fset-current-plot-pen "Honest service"; {- x5 N, K  X; F
end" G6 A/ _8 r# T5 V) d. m) j& V) k! ~3 _

% Q' Z- s( K& _. }[ 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.
6 z1 I( }% c0 j- ~2 i
2 l$ |8 }) U( F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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