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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:4 v4 `0 j/ I# B% U7 {" Q
to do-business + z; `2 m$ n5 Z8 E, F" R
rt random 360; X# E3 U& A% t6 Y( b
fd 1
  ?/ f( y) F9 D) @ ifelse(other turtles-here != nobody)[4 l2 p; b2 W) S; m" f6 ^1 [
   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.. q; D0 \) z& N+ l
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ i- T6 f: s# [" h7 J. ]0 a+ w8 D% R   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 ~- f+ @, L) A- L" K; j1 T+ i7 \
   set [trade-record-one-len] of self length [trade-record-one] of self
: n- Q7 |1 {# K8 u' }   set trade-record-current( list (timer) (random money-upper-limit))
) ~4 X; a, X$ p, c* u6 f& N
; _( U3 w% {# V2 ?) a问题的提示如下:
) |( {9 q. j9 s2 i/ A; s4 c, P( P8 X$ O+ V# `
error while turtle 50 running OF in procedure DO-BUSINESS4 t1 A8 X: b' }' }2 R: X1 |* Q& N
  called by procedure GO
- ~7 o7 \0 x: M& Y% k* k( BOF expected input to be a turtle agentset or turtle but got NOBODY instead.% u7 c- I$ D" `" K* Q7 o. u9 }
(halted running of go)
% n5 Y& {2 Q3 r0 f
$ F8 n. r$ J/ F3 K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~~
2 t- a& m8 a/ T& u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7 g) y: B8 U5 R4 v+ w
globals[9 f% e4 L5 n' q3 @0 E- T  @
xmax4 a( b( d: V) [. O: W
ymax( O7 U. l9 \6 L
global-reputation-list
0 m3 j: A. z6 G' l
  v- v' B: `: U( U0 P;;
每一个turtle的全局声誉都存在此LIST% F, E  ^) ~! A% S: M5 V: \9 l6 `
credibility-list
7 o$ A3 `# [$ B: u8 q% o7 E;;
每一个turtle的评价可信度
  K7 k* r" N* \: i% }5 o$ Ehonest-service1 t8 h2 Z6 f5 |4 z/ o! L# j  |! B
unhonest-service
" f; j' e' d5 P1 T; h# e! Poscillation3 J2 g: r. w8 v0 K; m' H
rand-dynamic/ _* R& Q1 ^7 F; A3 W
]* \6 g! j% g* s, D. Y9 Z4 s: p% |0 M
9 I$ u/ O8 N  N& V1 p% A  b
turtles-own[" j& U; u% U/ M" a1 P
trade-record-all
3 N! Y( o1 {* ], G6 S5 q;;a list of lists,
trade-record-one组成, j3 m8 x9 d  h; V+ q/ g4 h
trade-record-one' T) Q/ X; i4 B' 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
8 ^# L: `1 G# w1 b
; J& D: j$ G6 x- [: `! u5 R& A, n;;[
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 m/ k3 U9 Z  Vtrade-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]
* M) x3 ^2 m* c. f6 @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
: V3 ^9 B6 P$ {5 u- l# J5 _" Xneighbor-total
/ P6 Q' V8 R& X9 U;;
记录该turtle的邻居节点的数目
; Z6 T7 E8 }* L& F' d9 ftrade-time: _6 {/ @' R* X# M) Q
;;
当前发生交易的turtle的交易时间
/ U& k6 ~6 g) r% dappraise-give! |3 x1 h% |2 @8 j
;;
当前发生交易时给出的评价
5 l0 H9 u! {4 ]. p- Fappraise-receive
5 H/ L' q4 R/ ?7 v& m, u! V* n# ?* {;;
当前发生交易时收到的评价: K9 e* f* V) E8 P
appraise-time. j" }- p: k7 q, F3 a8 P) C9 ^9 q' ^
;;
当前发生交易时的评价时间: {( `  \- y. T7 K% @+ Y5 q0 C1 R7 x
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" S( D8 I8 B2 _! Utrade-times-total
% ^& D: G& f2 ?& ]0 p8 H, e9 T;;
与当前turtle的交易总次数
4 ?3 k8 q) _) W" ^6 _$ Y4 P: ?trade-money-total5 }  A/ ]' Q  ^( ?3 h+ a
;;
与当前turtle的交易总金额/ z3 B. J& m: T) X, {
local-reputation. H; {- t: s. j- ?; u7 w) H
global-reputation
9 V0 |; E* f$ \+ Fcredibility( N! ~. y( y" o" x/ L5 d$ a
;;
评价可信度,每次交易后都需要更新" ]8 ?% K" _9 n( }; |
credibility-all) P2 F- g' P$ B3 r% ~6 @* Q: {
;;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 G' f/ i; F' F4 F( Z
8 y$ W( D9 Q. U; 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0.5
& W7 X' j# n: u/ Q1 [, Fcredibility-one% B/ Q2 n! S5 m& \( K' K4 p7 z8 V
;;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& ?1 d4 M7 W1 V+ }% N: R
global-proportion
; b$ G, r# f# {# Z( G  U% Tcustomer
: y( p( g) m4 j' [' Tcustomer-no
( i( S- _1 o$ ~2 M/ `0 R* Etrust-ok- V* ^" T- k0 {& o" S
trade-record-one-len;;trade-record-one的长度5 H3 W* E/ _& f5 X: F- q$ ?5 ~7 |
]/ v7 }( _( t# `' a
; x# d0 n2 `# V, i% \- ]6 v
;;setup procedure
: \: r! n- a+ i, x6 U) F: n
) q& \. @# K; ^+ T: L$ C2 {to setup
; z# ^3 z' U, B
8 I3 ~: [% h/ `* Q6 r' Zca

  Y' l& W* Z  `, z. H2 R+ H2 n4 o& H0 G/ s1 i
initialize-settings
4 R/ k/ d8 x$ x$ i; u

( {4 j% O7 q8 u% G: z$ U  vcrt people [setup-turtles]

* T* @' C1 r% o/ K1 g; T( e4 {: U5 Q" n. Z
reset-timer
0 A& T1 B' E8 c4 @

# F- }  P# l/ n& M: X5 ^  u) Mpoll-class

! C9 m7 h; y) _* R7 s" a4 W+ v! e5 Q% w# m
setup-plots
- }- d( |) U+ S; L9 W6 b

! o+ Q3 w3 G) f1 @0 gdo-plots

& m: c% K3 B2 q4 \4 Y8 C5 ^end  B9 T0 |! h& {* ]9 l7 e2 \
' O2 |9 _7 ^* \/ S$ g( }
to initialize-settings! M5 G4 w3 j, T  s# l( \" O- W) E

/ I; Y; t* Q9 j8 A8 `2 aset global-reputation-list []
5 f# f: e" @/ \* a2 i9 ^

6 P; r. B! y5 x% y+ ]set credibility-list n-values people [0.5]

" d* w4 X" i5 B9 a/ D2 X+ D5 e
2 G1 S' P5 n( Z  h* Y* b  Mset honest-service 0

+ d6 n: u0 [& Z) |) f3 M$ c
; B+ I. z" F" w; Yset unhonest-service 0
2 v* ~  r% e$ g/ `, \- N. X
3 E% k% t3 ]# v2 J
set oscillation 0
, d! m. ^/ X7 q1 A: y. \9 S5 k

# {% j1 P8 V* }- a5 ^set rand-dynamic 0

# e! A$ I8 V. l# d! F- |' Dend
* a8 I' w2 o5 N( P/ D! N  \
; U' ]7 \9 M* F* W6 c  K0 bto setup-turtles $ K* q, _% P+ `- e- q8 E; @
set shape "person"
! d) g; R9 F: E+ i' o" v, ^setxy random-xcor random-ycor
( I+ `, h* I3 v& D! xset trade-record-one []7 r  D+ x1 j. q4 u- U

5 C# ?5 k  ^! c6 j. e# c4 U; Lset trade-record-all n-values people [(list (? + 1) 0 0)] ( h% [4 h# p3 l  A2 t

+ w4 J6 z+ k' `' ]: R7 Tset trade-record-current []
, b+ |  u4 ^& h& ^# }" yset credibility-receive []
; _- d& O) ]3 \7 U3 P& E! \4 M7 mset local-reputation 0.5
" f3 B! T5 b% O7 }( J) L4 `set neighbor-total 0
/ f5 G1 c/ ^; ~& G; nset trade-times-total 0
6 S9 K/ K5 y0 F9 d. q$ |set trade-money-total 0
- c5 r  r0 m6 q' ^8 A/ C' I- Lset customer nobody' E) f: p. m' ?1 N' `
set credibility-all n-values people [creat-credibility]
. z+ x  I4 @* f( x  E2 Gset credibility n-values people [-1]& k( E1 \# S) P( w5 o
get-color
/ V6 g  N& S$ [/ p* e
7 [. j: s4 v9 r5 p
end' K% G  c3 j3 z! S. L# T

" E( S1 P9 n; Vto-report creat-credibility
1 S- `9 y" O7 B+ w4 [% Preport n-values people [0.5]
, ?) A% _: i* m1 H$ q' Qend# s5 P/ t) D6 |5 S1 @

; N1 w: g, x% A. a2 b6 oto setup-plots
. d* Y9 P/ U- \  [9 n5 N
( `! P$ H5 e! H- d+ E9 n! zset xmax 30
' k& t2 S. A$ ~! g
0 B7 n1 A" t; B8 O( H
set ymax 1.0
6 ]" A7 N0 s6 t; I) ?
+ Q, y5 E- Y+ O2 q0 w5 B1 j
clear-all-plots
5 N& [/ p9 p7 C' x$ h# c6 a* C

. z3 P2 D( Z8 {setup-plot1
8 n" q8 F) F" u1 _- B
/ r) A2 {; F$ v, P# B0 P+ Y  M
setup-plot2

9 J" ?$ _. n4 [. S0 i7 L3 Y( n0 E' F( I* e: x# f2 y& N
setup-plot3

0 m# v9 b) _# h  `3 g5 t5 Eend1 M& W1 y+ }8 q( S! }+ x$ \
3 }/ i; V, }$ D& T; B
;;run time procedures
2 R+ x) U/ v+ O
; f' Z" G5 Q4 d0 Z0 y: N* r$ Cto go' {' @4 c0 O  k" R: g
7 z1 ?8 w! n+ X* b) H! {2 D
ask turtles [do-business]
  V# W( J; a0 H
end3 K5 |5 U1 `  d9 @: Z
/ W% }  b5 a' v$ E- k3 Y
to do-business
/ q8 |0 g! T  }

+ k5 p% F6 t$ U8 F2 o0 ~' s
$ c$ U: \# i  Srt random 360

7 V) D8 Q# d) R9 q4 Q1 E+ R$ `' v0 c; q+ |
fd 1
& e# \/ a. b! h' ~

1 c2 ~1 v( r& N8 \3 f5 B' s. Qifelse(other turtles-here != nobody)[

  x7 [8 M  u& R* v
. X# w% f( f  H" sset customer one-of other turtles-here
( G* q6 [' S; n) h5 C1 K3 j( H9 p* b

& \' @3 b" b2 R  |8 _;; set [customer] of customer myself
, V. N  s1 y+ D
. c' ?; B% U5 {& r& V
set [trade-record-one] of self item (([who] of customer) - 1)2 N) r( ]/ F9 o  R; T
[trade-record-all]of self
# P( I! p& T3 F! ];;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% L1 G% ^- {9 m0 C% O
* V9 Z" v5 Z1 A8 u" y2 dset [trade-record-one] of customer item (([who] of self) - 1)& y0 g% Z# r8 [- j% S
[trade-record-all]of customer
& d' T! U: b. d

6 F% ^9 @- E$ c) [set [trade-record-one-len] of self length [trade-record-one] of self

- K& _' [+ H( Q: e$ r
! h5 t( L8 ^9 E0 L; Hset trade-record-current( list (timer) (random money-upper-limit))

% D( |$ l& o6 C5 q
) z9 k+ k$ X" Z3 jask self [do-trust]1 B: e, @8 ^2 T& _/ v$ Y& W+ ?
;;
先求ij的信任度
6 y6 C/ v  M0 z3 f) F. x% G
5 t: l" M: V/ ~0 I9 d, k; Qif ([trust-ok] of self)8 }9 A9 f! m8 i% X8 }
;;
根据ij的信任度来决定是否与j进行交易[* f& Z0 x" U: |" k4 \
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: ]/ g3 s5 g. `  [' l8 c1 T% @. ]4 a& @3 m3 p2 N7 e8 a
[
; C9 Y$ G1 R  o2 R- u2 a
2 O. \/ ]+ _  ~. m6 q1 ?
do-trade

4 N% s7 C& m3 D! T/ Y/ \4 _
+ r2 H+ b% _' }. H- Bupdate-credibility-ijl

0 Y( y/ C3 e) i' x% O7 F! q' n# [
update-credibility-list
. A+ ~$ G* {0 g* [

6 v' z7 x. B% {, d9 R& a% n3 F9 `8 a8 P2 ~" f# N* f! p
update-global-reputation-list

- T: d! e# ~9 ?4 v0 P9 H6 I" V. ?- s. U% c( N( S: {
poll-class
# B( z; \/ C# J) i9 f. W# f7 s1 e
0 Q3 ^* N2 F7 a! e- z& ?
get-color
; N# p0 T5 R. V7 z6 F% m. z  {
1 X3 E0 z3 M3 L+ r" M2 q
]]6 ^$ V* t5 Z# w, I1 a$ o% f; l

$ ]) |8 z+ I1 O8 x: i;;
如果所得的信任度满足条件,则进行交易  r) j+ M$ p& q0 p+ X7 b8 O6 v) [
+ k+ G, F$ J# T: F; X
[

. S0 i: I% j. A8 q: p4 A- m/ z. B' P/ n: k' E; {9 v
rt random 360
0 \7 W& ^; _- q4 q9 S+ H/ _
6 [* t: u" c8 q3 t
fd 1

+ b" U7 C+ t) |" @1 Y. P! Q' g  x8 ]! q: a( z4 d8 T0 o
]
6 Q9 r- K* I0 X, ]8 ]! W! }% X/ G
& m; ~6 T. a2 z' q; |) |
end
- s$ O$ x! F: A/ U

7 I+ x# z7 ~- G  Z% g* Yto do-trust 5 T& i. F. m3 f; n9 a% D" a
set trust-ok False
3 t9 G$ M. O$ H5 ~1 Y7 |6 y% d) I
8 F8 |. |2 t0 {# q
- V- Y9 g& f- Y2 o
let max-trade-times 0( Y5 f1 I7 k1 X4 s% F' i
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: u9 s% C/ l8 A7 B5 v
let max-trade-money 0
0 g9 x5 i- p& |2 V; {foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], U; [3 L, S+ ]4 p4 X+ q6 N% o$ l$ q
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' E1 H) A: a. ]4 ~( f# B. ^+ n9 X9 D- U) N# H
! S  L6 ~- E" T: b0 U. A. ]
get-global-proportion
# @, K5 n5 X( L/ Tlet trust-value
1 T8 V0 |: r: Z& Mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

7 E5 u; {" h. _% n- ?if(trust-value > trade-trust-value)1 o& U' g- l5 @: l0 ^: K
[set trust-ok true]! h. F3 P" o9 S4 c$ l5 a! |
end5 K! V, D$ I( e

& p0 `- P7 c( X, D6 u- r: |* Pto get-global-proportion( N# V- Q0 ^  g. i  w
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): _: c$ G! [; K; q7 T. N* R: Y
[set global-proportion 0]3 j% c8 f3 T* \
[let i 0
" x, |1 k. x3 S* N% ~let sum-money 0
+ \* l. f# K4 |( I4 V. P! dwhile[ i < people]! @: J' ^( |1 s+ k" E
[1 [2 P8 _4 @5 w  }  u0 E7 s
if( length (item i
+ j/ v' E: f/ E[trade-record-all] of customer) > 3 )
0 ~2 Y8 K4 @3 v! R
[* k$ H* S7 G$ v2 O$ z( }! i
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' F& Q& t; L$ o' e1 v$ o! x4 h]+ N* }: g' l, L, s
]
7 b; V0 Y( V, Q; g& B8 g( ?' |let j 0
5 @7 ]8 l& m" S7 Y. n5 U$ l# blet note 0
* I/ F+ C' X/ N3 }* t) d7 Kwhile[ j < people]
5 K/ \1 b/ b* I; q/ ?7 k. v[! P  l$ e4 N. s/ F: `$ m7 P
if( length (item i
5 d7 N9 o# ]% r# ^  v" t[trade-record-all] of customer) > 3 )

% m8 L  B( ]- {) D% z[( r( b/ B0 M; s" P+ X* Y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' u% A: M  z; q7 R% N1 \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* `0 M+ e* @! v1 Q9 a. G4 s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 C( C" I, @+ _6 []
% n/ V# _) w9 P& O- m, _]
: }. P) \5 c' D% r- }0 m+ aset global-proportion note4 q3 v$ d+ n2 Q+ p! v
]+ e! y: m4 \# ~
end
2 |6 E+ t- A6 A( U9 z3 z
& {9 X$ U* H3 M$ z8 tto do-trade
$ g4 p& q0 H9 B- m& n! W9 Q;;
这个过程实际上是给双方作出评价的过程
9 v- O5 b% m* g, G' r2 Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 O/ }1 \7 B9 d& S5 y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 h$ @! e9 Z% b8 Z2 z" Lset trade-record-current lput(timer) trade-record-current; j' U1 S4 t0 l( k
;;
评价时间7 h6 c! W) |9 G( b8 ^
ask myself [( S7 i" o2 v1 s+ k& I
update-local-reputation5 {0 `3 G0 ]8 u2 ]
set trade-record-current lput([local-reputation] of myself) trade-record-current% n" W2 s3 Q1 M5 ?
]
& D% _1 Q. R4 p; O! K; ], \set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 x0 Q6 H" F; p9 [
;;
将此次交易的记录加入到trade-record-one- K6 V5 _8 v; y& X6 D- V" s
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: ^9 P8 p0 M" K+ o2 g$ ^9 alet note (item 2 trade-record-current )
" X4 L; o2 u. q$ S  xset trade-record-current
. d$ v3 a; `7 h- {) G(replace-item 2 trade-record-current (item 3 trade-record-current))
1 X! Y- W/ G) O+ H
set trade-record-current
8 B2 q/ w' F$ a0 \6 e(replace-item 3 trade-record-current note); I, c& J% O7 Q. h4 d

5 ~) t& n5 N9 ?

" B5 l8 x  Y) {& |" A! F. `0 _ask customer [
7 s- y- J/ f5 F/ F1 D7 |update-local-reputation
7 B( y% q; k! x7 E' gset trade-record-current
$ e' W! t& B8 [  m# |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( \8 L: s: w$ j' f
]; b  D7 b% F; i, p
" V, k- O& r, |# ~
$ j# W" g3 \+ w, M: Y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) e: p: G  P& B1 M* x6 L/ W

, D7 Y) g7 f6 Z9 z; Hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 K2 U; u+ I9 [# h0 p" ~  f1 \
;;
将此次交易的记录加入到customertrade-record-all
7 N5 Q! g" ~" g8 H8 D9 F8 Hend
* a0 |2 }! ^: a; S8 Z  @2 a2 z, \6 a, T/ p! }, b( h
to update-local-reputation: |' e9 H1 `% z& W
set [trade-record-one-len] of myself length [trade-record-one] of myself
5 h* O# \! C" D$ h0 b; W
# g7 a, Y# n% l$ ?1 _$ `- F0 l$ n/ R( ~$ M) R8 Y  d$ k- G" n7 H
;;if [trade-record-one-len] of myself > 3

% t! g* ~+ N- J3 {( M, o) u8 Iupdate-neighbor-total6 F! e1 g" p7 S0 s. m
;;
更新邻居节点的数目,在此进行
1 B2 `/ b  E3 o: f: }: N6 q/ Glet i 3$ o3 c  f; d# V; b  `% {
let sum-time 0
' [% e3 U; [: V( z; _. u" Ywhile[i < [trade-record-one-len] of myself]; t: b+ c" u8 c6 [, F
[9 d  {+ `" U2 W5 P( G
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 p, M# q2 A# B7 x* k6 _set i
/ N" ~$ Y7 P9 ?  ~6 r  r! i( i + 1)

& i- `5 y4 [5 V7 [* S  u# o]- a+ @5 S0 W4 @- ^2 L
let j 3. j5 k, G4 Y1 Q& A7 d" ]8 t& S
let sum-money 05 c2 n% o# i% a
while[j < [trade-record-one-len] of myself]1 L4 u* p# h4 q' F5 D: z4 h1 D
[0 w; Z# F4 f9 i% N# c4 R( i
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)/ E& B3 n1 m+ `4 p  n* P  |
set j
. B2 G0 |: V( O# n* r# c( j + 1)

. B$ y8 ?0 {5 a+ e5 L. R. n]
' `: g  A$ C# X( u6 a# ?let k 36 ]5 T* T/ z5 U! }) r, ^) `/ ^
let power 0
+ q) X9 M" e0 Llet local 0+ q# ~# ]) B- G0 b$ K$ \0 n
while [k <[trade-record-one-len] of myself]/ x" J1 ^" p) p
[
, J" ~# p+ ?$ R7 M% vset 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) 1 I& K6 r; N" z9 D
set k (k + 1)
5 Q$ ?; s+ f2 l- U2 K, [2 T3 M]
; Z# o% W/ |. aset [local-reputation] of myself (local)
+ M# ?2 I. C) s& Tend! ]( P4 v! H& Z
$ {1 q" X5 J0 \' i4 k* e1 f
to update-neighbor-total
1 V" {% G% w5 {* C" {& q- @! c
7 [% T1 `" f5 ~( _* A, j2 iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 V" Z% C" e6 C
7 S! [+ }+ V; J2 p2 M5 @( Y

( q* m8 w& q1 L9 v1 R8 v! x$ O% A) {end" Z, o9 X: W) _& T/ B
9 Y. d: K& [" c( B
to update-credibility-ijl
/ g7 E% v4 O  d/ Q4 }6 t) `
+ w3 M+ @" P: O: ~! X;;
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。0 H( V# Q* v6 K  C* J
let l 0+ R6 Y1 H* i( n9 t. i
while[ l < people ]# q9 R- M# [, k  k8 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' V( E9 p# f0 P* Q
[5 |: W; L' \; R$ y+ Y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 c2 E' x4 J9 g( q( W4 a9 Z7 Bif (trade-record-one-j-l-len > 3)
5 A2 \- Y& }  }( |[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
! t: x2 ?- B) a" s8 r8 Blet i 3  T0 T: `( f# o( |/ E; z. b& |
let sum-time 0
; z8 `+ H# i! c% P3 Q5 N4 c3 D% t) gwhile[i < trade-record-one-len]
, o5 o4 ?5 F8 O1 G9 {[# i( Y8 v5 r* q* J7 U9 s* ~& q: p
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# r5 p- Z$ p/ p$ T2 v. ?
set i! P1 s  E5 k* k
( i + 1)
) m6 |" |0 d5 V" g+ e
]5 o/ Z& s8 R; e! k9 o
let credibility-i-j-l 0) B: @, V5 y2 u* ]$ b3 A
;;i
评价(jjl的评价)
. N" o* h# [2 c0 olet j 3
) H3 ^: y6 h5 s  x/ Y/ S3 m" Blet k 49 ?) U! s6 h: O2 Z' V" m
while[j < trade-record-one-len]5 f& e3 q9 T4 h3 C* j
[
8 U; i" Z* Z3 s8 v% U0 Ewhile [((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
/ @" r; {  R5 X: L6 Q# y* y2 A/ 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 }3 j8 {! U" a3 Y4 Z4 }9 t+ ]set j: p6 Z/ i- F) B8 ?" [6 g+ w1 l
( j + 1)
6 x/ ^4 A# a  U  I( Q8 D0 z2 j
]
, C: k5 v( }1 M* ~/ d" e) \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 ))
. f/ r% G  t: h5 I7 M# M. E& d' F+ g: T; f* |  _
. c. Y+ |6 C3 q' U5 {
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- t6 c1 Z! E8 G. M( _
;;
及时更新il的评价质量的评价( H3 @2 g- |( e( F
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- m" @+ j: _% qset l (l + 1)
# P" Q$ d1 R. W4 P: M]
4 x! x8 f. W7 @4 h9 ?end
! i2 e  [; k; W1 |, k. L3 C. Y4 P' B0 b) R& |
to update-credibility-list
, t' _0 I% G6 r  f" c- @. r4 \let i 0/ t1 V0 |, t' L  r
while[i < people]
- V9 C5 c( M' T" {! V[
  t/ C7 a' g1 k# ]let j 0
3 X9 F; B# i! @let note 0
5 g2 m" G+ r/ O" v( Y6 z) Ylet k 0, o4 e8 N# ?' Z* t, q: g: T
;;
计作出过评价的邻居节点的数目% e7 I) [$ n# \3 ?
while[j < people]$ p' u! v# i, s# m, V# v
[
# c6 w" c- n; c' U+ Fif (item j( [credibility] of turtle (i + 1)) != -1)
* b+ H- f" |* o# @* Z+ D;;
判断是否给本turtle的评价质量做出过评价的节点
, A; ~/ s7 f" {! @" ^- k[set note (note + item j ([credibility]of turtle (i + 1)))7 C5 Y1 d7 ^( E! I$ G5 ~2 u
;;*(exp (-(people - 2)))/(people - 2))]
$ Q* r8 ^. K7 y* N# `7 q
set k (k + 1)
) L# _; ?$ C- ]8 Y]
: M3 l  ?9 O! C$ o! c9 i$ f1 Yset j (j + 1)
8 l# D" J# e: @: T  u) d]
! ?% F6 z8 }, P/ p) P: W0 ?6 uset note (note *(exp (- (1 / k)))/ k)/ V! Z* P$ ]) V1 j( v0 `7 T- `3 \
set credibility-list (replace-item i credibility-list note)% S* W+ N5 F2 n! L- b* O
set i (i + 1)
3 }% U( V5 E& q; l. c9 C" ?1 f]) I8 ?. x6 G6 l- _" A: \$ P
end
& e6 W6 Z. s3 r# v% k5 C$ _) i1 b; E" J1 l8 h
to update-global-reputation-list
$ \% t3 _, Y4 T& N; e" r. N6 h- klet j 0
: i, ~; H  O8 b  K2 t0 F; ^while[j < people]# r: {8 x! c% _7 e
[
+ j  b5 ~: S+ k7 p% X1 A9 ulet new 0
7 u0 P4 ~" F  c! u2 p9 e;;
暂存新的一个全局声誉2 Y- _) X7 _) }6 Y
let i 0( v( L$ a; M9 M+ `8 B3 t% @
let sum-money 0
/ Z8 g( A* L8 I1 Llet credibility-money 0
) p3 o8 }8 V0 z6 C7 qwhile [i < people]7 A6 e: U: R, ^" ?1 V6 j
[6 S( g: A& m% v4 X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* c& }! Y/ ]6 f: v7 ?, F) h7 t# i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))  O6 }; O  F4 R( _/ X+ y4 w# w4 i
set i (i + 1)
7 R1 S9 u, s. k( B]8 @2 I9 x' ?; f) N2 g: B  L
let k 0
9 W, X3 d# ]1 g3 k! o% F5 o# r7 nlet new1 0
1 R- l- S; `1 j" |3 ?$ l! Iwhile [k < people]3 G$ t' g% s4 o$ A5 z3 b+ g; o
[9 R+ m+ S; g- s1 W! |2 Y
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)
5 d3 g. v5 K, [# A; wset k (k + 1)4 [1 z4 h" O. G* d' r' A5 ?
]
8 \" `& s0 V" G# {- a7 `4 Rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 R$ p( K# D7 {8 O& \; [! a5 W
set global-reputation-list (replace-item j global-reputation-list new)
6 A9 `- n/ U4 |1 Pset j (j + 1)
7 _8 ~9 Z* A$ t: ^1 @]
0 X; }! b6 p: f' G0 fend! c+ c' ?9 J9 j" [2 A' r

+ I( |9 E5 L9 p, N: U4 l) i. O# ^4 m5 g* U5 j" d% B) B$ a  t

0 P4 u( F: a& ~' nto get-color" W; \1 C! C: b4 q% v% s

+ J  Y) _2 H) P& P+ \9 m$ vset color blue

7 X' L/ U9 Y7 F: o- X) gend
/ L7 Z! o1 h% a4 b# K5 X& Z) p/ s* e0 u( y5 l# C  X6 H
to poll-class2 j9 t7 Q0 Q) g
end
& m2 V; O! [' b8 h0 Q+ q; Z- ^  {3 S8 O8 G- B# D" w: Y
to setup-plot1& k4 a# N% C- U

. J3 Q3 d  E( m- G$ Zset-current-plot "Trends-of-Local-reputation"
7 v* u/ o! G, w% r7 C( V# m1 W

! X! ?$ _( A8 g& J* J  y6 eset-plot-x-range 0 xmax
8 b7 P3 n- T& _% c9 {+ }& [

# u: |% H: J6 ~2 P9 L2 J9 u# Mset-plot-y-range 0.0 ymax

4 h. s; l7 H; d6 L  N: i3 lend+ O' p5 d( u9 X! B2 k

% a9 D0 P; u# @to setup-plot2, h$ Z8 e; }# I3 X( a

1 F( e* C2 g- ?/ H9 Jset-current-plot "Trends-of-global-reputation"

. `, n2 Z$ W  r7 p  i! N! T5 a8 u4 M! Y+ t! O& y1 |. |
set-plot-x-range 0 xmax

  o: |( ^1 A+ T* J. l0 K. X& i+ c- c
set-plot-y-range 0.0 ymax
3 @, g& a9 I  f% ~
end0 k: V8 w  c" }* t& X6 E

' f$ e9 @; O9 k4 I; Nto setup-plot31 r& J! C+ R. x; q/ |# e# ~

5 ^8 A9 ~! d" T2 v3 |8 ^set-current-plot "Trends-of-credibility"

! |: X* O  P: Q/ G
0 m" l2 t' W- g3 H5 m3 hset-plot-x-range 0 xmax
# r0 ^# C& k; \9 `
! S% J" q% `. D4 D' @7 I1 u4 }. T
set-plot-y-range 0.0 ymax
  b' Z/ y+ [. Q2 L- T3 N" R
end
7 K3 ]" K7 Z& O, `/ X, r: f/ _- G4 m) U$ W5 `
to do-plots
$ h% L1 Q, e' o" z0 Uset-current-plot "Trends-of-Local-reputation"
& P& |% ^' v# l, s4 Z1 qset-current-plot-pen "Honest service"2 q9 W. v( Q! e& `
end
! H. g' |1 h6 T- U5 w6 B8 K4 E% m8 e: x' f
[ 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.
: o6 W( U; {( V' L% G. l0 t! D* C- j. [- N: e7 }- ~0 H
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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